ASSOCIATION CONNECTING

ELECTRONICS INDUSTRIES

IPC-CC-830A
with Amendment 1

Qualification and Performance

of Electrical Insulating
Compound for Printed
Board Assemblies

IPC-CC-830A
with Amendment 1
July 1999 A standard developed by IPC

Supersedes IPC-CC-830A 2215 Sanders Road, Northbrook, IL 60062-6135

October 1998 Tel. 847.509.9700 Fax 847.509.9798
www.ipc.org
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problems for future improvement

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 IPC-CC-830A with Amendment 1
ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES

Qualification and
Performance of Electrical
Insulating Compound for
Printed Board Assemblies

Developed by the IPC Conformal Coating Task Group (5-33a) of the

Cleaning and Coating Committee of IPC

Users of this standard are encouraged to participate in the

development of future revisions.

Contact:

IPC
2215 Sanders Road
Northbrook, Illinois
60062-6135
Tel 847 509.9700
Fax 847 509.9798
IPC-CC-830A with Amendment 1 July 1999

Acknowledgment
Any Standard involving a complex technology draws material from a vast number of sources. While the principal members
of the IPC Conformal Coating Task Group (5-33a) of the Cleaning and Coating Committee are shown below, it is not pos-
sible to include all of those who assisted in the evolution of this standard. To each of them, the members of the IPC extend
their gratitude.

Cleaning and Coating Conformal Coating Technical Liaisons of the

Committee Task Group IPC Board of Directors
Chairman Chairman
Frank Cala John Waryold Stan Plzak Peter J. Murphy
Church & Dwight Co., Inc. Humiseal Division/Chase Corporation Pensar Corp. Parlex Corp.

Conformal Coating Task Group

Patricia Amick, Boeing/McDonnell Mario Kasilag, GenCorp-Aerojet Jan Obrzut, U.S. Department of
Aircraft & Missile Systems Electronic Systems Commerce
Rich Barnett, Compaq Computer Rolf Krause, Ciba Speciality Roger Olson, Specialty Coating
Corporation Chemicals Corp. Systems Inc.
Rex Breunsbach, Electronic Controls John Lampe, Lockheed Martin Douglas Pauls, CSL Inc.
Design Inc. Electronics & Missiles John Radman, Trace Laboratories -
Frank Cala, Church & Dwight Co., Roger Landolt, Enthone-OMI Inc. East
Inc. James Lawrence, Humiseal Division/ Alan Rice, TRW/Automotive
Rick Carlson, Taiyo America Inc. Chase Corporation Electronics Group
Peter Marc Carter, Rockwell Thomas Lepsche, Honeywell Inc. Barry Ritchie, Loctite Corporation
International Shawn Lien, Ciba Speciality Allen Robarge, Specialty Coating
Alan Cash, Northrop Grumman Chemicals Corp. Systems Inc.
Corporation Curtis Lustig, Morton Electronic Lucy Rojao, Celestica
Willy Chang, Boeing Defense & Materials Marianne Romansky, Celestica
Space Group James Maguire, Boeing Defense & David Rund, Taiyo America Inc.
Henry Clausen, Charles Stark Draper Space Group Henry Sanftleben, Delco Electronics
Labs Bernard Malofsky, Loctite Alvin Schneider, Alpha Metals Inc.
David Corbett, Defense Supply Corporation
Center Columbus DSCC Lowell Sherman, Defense Supply
Susan Mansilla, Robisan Laboratory Center Columbus DSCC
Lawrence Crane, Loctite Corporation Inc.
Roger Shiel, Rockwell International
George Davis, U.S. Department of Brian McCrory, Delsen Testing Labs
Commerce John Sohn, Lucent Technologies Inc.
James Minadeo, Trace Laboratories -
William Dieffenbacher, Lockheed East Patrick Sprague, Northrop Grumman
Martin Corporation Corporation
Marta Minadeo, Trace Laboratories -
Joe Felty, Raytheon TI Systems Inc. East Jorgen Svensson, Ericsson Telecom
AB
Neil Fox, Taiyo America Inc. R. Shawn Mooney, Sandia National
Labs Albuquerque Karen Tellefsen, Alpha Metals Inc.
Pierre Gadoua, Canadian Marconi
Company Lester Moreland, Ciba Speciality John Tevels, Harris Corp.
John Getson, Wacker Silicones Corp. Chemicals Corp. Richard Thompson, Loctite
John Moylan, Delsen Testing Labs Corporation
John Giannini, Specialty Coating
Systems Inc. Karl Mueller, Hughes Aircraft Co. William Tran, Morton Electronic
Materials
Alan Gillespie, Boeing/McDonnell Terry Munson, CSL Inc.
Aircraft & Missile Systems Paula VanDenberg, Plasma Systems
Bruce Murray, Grace Specialty Inc.
James Heaton, Loctite Corporation Polymers
David Vaughan, E. I. du Pont de
F. D. Bruce Houghton, Celestica Graham Kirk Naisbitt, Concoat Nemours and Company
Les Hymes, Les Hymes Associates Limited
John Waryold, Humiseal Division/
Joseph Kane, Lockheed Martin Terri Neubauer, Northrop Grumman Chase Corporation
Corporation Corporation
Britt Watts, Taiyo America Inc.
Donald Karp, Trace Laboratories - Debora Obitz, Trace Laboratories -
East Steven Wilson, Dow Corning Corp.
Central
Fonda Wu, Hughes Aircraft Co.

ii
July 1999 IPC-CC-830A with Amendment 1

Table of Contents
1 SCOPE ......................................................................... 1 4.2 Categories of Inspection.................................... 5
1.1 Scope.................................................................. 1 4.3 Materials Inspection .......................................... 5
1.2 Purpose .............................................................. 1 4.4 Standard Laboratory Conditions ....................... 5
1.3 Classification...................................................... 1 4.4.1 Permissible Temperature Variation in
1.3.1 Types.................................................................. 1 Environmental Chambers .................................. 5
1.3.2 Classes ............................................................... 2 4.4.2 Reference Conditions ........................................ 5
4.5 Qualification Inspection .................................... 5
2 APPLICABLE DOCUMENTS ...................................... 2
4.5.1 Sample Size ....................................................... 5
2.1 IPC ..................................................................... 2
4.5.2 Inspection Routine............................................. 6
2.2 Government ....................................................... 2
4.5.3 Failures .............................................................. 6
2.3 American Society for Testing of Materials ...... 2
4.5.4 Test Frequency................................................... 6
2.4 Underwriters Laboratories................................. 2
4.6 Quality Conformance Inspection ...................... 6
2.5 ANSI .................................................................. 2
4.6.1 Inspection of Product for Delivery ................... 6
2.6 ISO ..................................................................... 2
4.6.2 Batch .................................................................. 6
3 REQUIREMENTS ........................................................ 2 4.6.3 Specimens .......................................................... 6
3.1 Terms and Definitions ....................................... 2 4.7 Preparation of Specimens for Evaluation
3.2 Conflict .............................................................. 2 or Qualification Testing..................................... 6
3.3 Qualification/Conformance................................ 2 4.7.1 Preparation Prior to Coating ............................. 6
3.3.1 Conformal Coating Material Property 4.7.2 Coating............................................................... 6
Evaluation Conformance ................................... 2 4.7.3 Number .............................................................. 6
3.3.2 Conformal Coatlng/IPC-B-25A Test Board
5 PREPARATION FOR DELIVERY................................ 6
Qualification ...................................................... 3
5.1 Containers .......................................................... 6
3.4 Materials ............................................................ 3
5.1.2 Packaging........................................................... 7
3.4.1 Fungus Resistance ............................................. 3
3.4.2 Shelf Life ........................................................... 3 6 NOTES ......................................................................... 7
3.4.3 Fluorescence ...................................................... 3 6.1 Conditioning ...................................................... 7
3.4.4 Cure.................................................................... 3 6.2 Intended Use...................................................... 7
3.4.5 Appearance ........................................................ 3 6.3 Order Data ........................................................ 7
3.4.6 Coating Thickness ............................................. 3 6.4 Identification of Solvent Sensitive Coatings .... 7
3.5 Physical Requirements ...................................... 3 6.5 Cleanliness ......................................................... 7
3.5.1 Flammability...................................................... 3 6.6 Formulation Change .......................................... 7
3.6 Electrical Requirements .................................... 4 6.7 Adhesion ............................................................ 7
3.6.1 Dielectric Withstanding Voltage........................ 4 6.8 Solvent Resistance............................................. 7
3.6.2 Insulation Resistance ......................................... 4
3.7 Environmental Requirements ............................ 4 Figures
3.7.1 Moisture and Insulation Resistance .................. 4
Figure 3-1 IPC-B-25A Multipurpose Test Board.................. 3
3.7.2 Thermal Shock .................................................. 4
3.7.3 Temperature and Humidity Aging
(Hydrolytic Stability.......................................... 4 Tables

4 QUALITY ASSURANCE PROVISION ........................ 5 Table 1-1 Requirements of Qualification/Conformance ....... 1

Table 3-1 Thickness Requirements...................................... 4
4.1 Responsibility for Inspection ............................ 5
Table 3-2 Minimum Insulation Resistance Requirement
4.1.1 Test Equipment and Inspection......................... 5 When Measured During and After Moisture ........ 4
4.1.2 Product Change ................................................. 5 Table 4-1 Sample Sizes ....................................................... 6

iii
IPC-CC-830A with Amendment 1 July 1999

This Page Intentionally Left Blank

iv
July 1999 IPC-CC-830A with Amendment 1

Qualification and Performance of Electrical Insulating

Compound for Printed Board Assemblies

1 SCOPE sesses when tested on a standard board assembly according

to the test methods and conditions contained in this docu-
1.1 Scope This standard has been designed and con- ment.
structed with the intent of obtaining the maximum informa-
tion about the confidence in the electrical insulating com- Amendment 1
pound (conformal coating) material under evaluation with Note: Conformal coatings presently qualified to MIL-I-
a minimum of test redundancy. This standard covers: 46058 shall also be recognized as meeting the require-
• The evaluation and conformance of conformal coating ments of IPC-CC-830. These products currently qualified
material properties (Table 1-1, Column A). or in the process of being requalified to MIL-I-46058 prior
to the publish date of this document will also be recognized
• The qualification of the conformal coating using the stan-
as meeting the requirements of this document.
dard IPC-B-25A printed wiring test board assembly
(Table 1-1, Column B). 1.3 Classification
For the purpose of this specification the term conformal 1.3.1 Types Conformal coatings shall be classified into
coating is used herein when referring to a type of protec- types by the cured chemistry of the coating. The type for
tive coating for use on printed board assemblies. The coat- multifunctional materials shall be based on the chemistry
ing is intended to provide protection from moisture, con- type which is the highest percentage by weight. Conformal
tamination and provide electrical insulation; not as a sole coatings shall be of the following types:
source of mechanical support. The term standard board
assembly is used when referring to the IPC-B-25A printed Type AR—Acrylic
board coated with the conformal coating. Type ER—Epoxy
Type SR—Silicone
1.2 Purpose This standard enables a vendor to qualify Type UR—Polyurethane
his conformal coating and express the qualifications it pos- Type XY—Paraxylylene

Table 1-1 Requirements of Qualification/Conformance

Description
Column A Column B
Requirement Paragraph Test Method Acceptance Testing Qualification Testing
3.4.1 Fungus Resistance IPC-TM-650 NR X
2.6.1
3.4.2 Shelf Life – NR X
3.4.3 Fluorescence – NR Z
3.4.5 Appearance – X X
3.4.6 Coating Thickness ASTM-D-1005 NR Z
3.5.1 Flammability UL 94 HB X NR
3.6.1 Dielectric Withstanding Voltage IPC-TM-650 NR Z
2.5.7
3.6.2 Insulation Resistance IPC-TM-650 NR Z
2.6.3.1
3.7.1 Moisture and Insulation Resistance IPC-TM-650 NR Z
2.6.3.1
3.7.2 Thermal Shock IPC-TM-650 NR Z
2.6.7.1
3.7.3 Temperature and Humidity Aging IPC-TM-650 NR Z
2.6.11
X = Denotes group responsibility for test (Columns A & B are Vendor responsibility)
Z = Denotes class or type differentiation of results
NR = Denotes test not required

1
IPC-CC-830A with Amendment 1 July 1999

1.3.2 Classes This specification provides Classes (1, 2, 2.2 Government1

and 3) for feature requirements to reflect progressive
MIL-STD-1188 Commercial Packaging of Suppliers and
increases in sophistication, functional performance require-
Equipment
ments and testing severity. The reference of a single class
does not preclude invoking or allowing specific require- FED-STD-141 Method 4061.2 Drying time
ments defined in other classes.
Class 1—General Electronic Products 2.3 American Society for Testing of Materials2
Includes products suitable for applications where the major ASTM-D-1005 Measurement of Dry Film Thickness of
requirement is function of the completed assembly. Organic Coatings
Class 2—Dedicated Service Electronic Products
Includes products where continued performance and 2.4 Underwriters Laboratories3
extended life is required, and for which uninterrupted ser-
UL 94 Flammability
vice is desired but not critical. Typically the end-use envi-
ronment would not cause failures. 2.5 ANSI4
Class 3—High Performance Electronic Products
NCSL Z540-1 Calibration Calibration Laboratories and
Includes products where continued high performance or
Measuring and Test Equipment
performance-on-demand is critical, equipment downtime
cannot be tolerated, end-use environment may be uncom-
2.6 ISO5
monly harsh, and the equipment must function when
required, such as life support or other critical systems. ISO 10012-1 Quality Assurance Requirements for Measur-
ing Equipment - Part 1: Metrological Confirmation System
2 APPLICABLE DOCUMENTS for Measuring Equipment
The following documents of the issue currently in effect
3 REQUIREMENTS
form a part of this specification to the extent specified
herein.
3.1 Terms and Definitions The definition of terms shall
be in accordance with IPC-T-50.
2.1 IPC1

3.2 Conflict In the event of a conflict between the

IPC-B-25A Master Drawing, Multipurpose Test Board
requirements of this specification and procurement docu-
ment, the procurement document shall take precedence. In
IPC-T-50 Terms and Definitions for Interconnecting and
the event of a conflict between the test parameters of this
Packaging Electronic Circuits
specification and the test methods, this specification shall
take precedence.
IPC-TM-650 Test Methods Manual
2.5.7 Dielectric Withstanding Voltage, PWB 3.3 Qualification/Conformance Two separate groups of
2.6.1 Fungus Resistance Printed Wiring Materials testing (3.3.1-3.3.2) have been defined to provide assurance
2.6.3.1 Moisture and Insulation Resistance-Polymeric of material consistency and general qualification. Although
Solder Masks and Conformal Coatings each group of tests are designed for use specifically by the
conformal coating vendor, they may be conducted and/or
2.6.7.1 Thermal Shock - Polymer Solder Mask Coatings modified by written agreement of all concerned parties.
2.6.11 Hydrolytic Stability Solder Mask and Conformal Qualification testing consists of those tests defined in col-
Coatings umns A and B of Table 1-1.

IPC-4101 Specification for Base Materials for Rigid and 3.3.1 Conformal Coating Material Property Evaluation
Multilayer Printed Boards Conformance Conformal coating material property
evaluation conformance is generally performed by the coat-
IPC-6012 Sectional Standard for Qualification of Rigid ing vendor, but may with appropriate agreement be used as
Printed Boards an incoming material inspection procedure by the printed

1. To obtain documents, write to Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094
2. American Society for Testing and Materials, 100 Barr Harbor Road, West Conchohocken, PA 19428
3. Underwriters Laboratories, Inc., 1285 Wait Whitman Road, Melville, Long Island, NY 11746
4. American National Standards Institute, 11 West 42nd Street, New York, NY 10036-8002.
5. International Standards Organization

2
July 1999 IPC-CC-830A with Amendment 1

board assembler or user. The tests the conformal coating shall be no differentiation of class requirements. Test
vendor shall perform to determine the properties of each samples shall be prepared in accordance with 4.7 and Table
formulation or variation of conformal coating material are 4-1.
listed in Table 1-1, Column A. This test set shall be used
The cured conformal coating shall not contribute to bio-
for material conformance and test results are to be reported
logical growth.
relative to the properties defined in the physical require-
ments section of this standard. Test frequency will be in 3.4.2 Shelf Life The conformal coating shall meet all
accordance with 4.5.4.1. performance criteria of this document when applied and
cured within the shelf life and storage requirements speci-
3.3.2 Conformal Coatlng/IPC-B-25A Test Board Qualifi-
fied by the conformal coating vendor. To verify shelf life,
cation Conformal coating/IPC-B-25A test board qualifi-
all tests in Table 1-1 must be repeated at the maximum
cation utilizes a standard board laminate and standard cir- shelf life as a part of qualification
cuitry that has been coated and is unpopulated (see Figure
3-1). There are some tests that may be performed on a 3.4.3 Fluorescence Class 3 conformal coating materials
coupon as outlined in the specific test method. This allows shall be fluorescent by ultra-violet illumination prior to
a conformal coating vendor to determine the Class (1, 2, or conditioning per Table 1-1.
3) to which his product(s) will qualify when tested on a
standard board per tests listed in Table 1-1, Column B. The 3.4.4 Cure The curing of the conformal coating material
Printed Board Assemblers and/or user may also utilize this that has been applied to test specimens shall be in accor-
group of tests if desired. Test results must specify the des- dance with those conditions specified by the conformal
ignating Class (1, 2, or 3) which was achieved. Test fre- coating manufacturer for that product.
quency will be in accordance with 4.5.4.1.
3.4.5 Appearance Appearance shall be observed visu-
ally in all stages of evaluation, qualification, and conform-
ance inspection with the aid of a 3 diopter (approximately
1.75x) minimum magnification. Referee inspections shall
be accomplished at 10-power magnification. Test samples
shall be prepared in accordance with 4.7 and Table 4-1.
The cured conformal coating shall be smooth, homogenous
and transparent. The conformal coating on the test boards
(IPC-B-25A) shall have no bubbles, pinholes, blisters,
cracking, crazing, peeling, wrinkles, mealing or evidence
of reversion, or cause corrosion. The coating shall not
mask or obliterate the identification markings, conductors,
and base materials greater than the discoloration caused by
conditioning when uncoated.

3.4.6 Coating Thickness The coating thickness shall be

measured per Table 1-1. Thickness shall be measured in
accordance with ASTM-D-1005 or by micrometer or indi-
cator accurate to 12.5 ± 2.5 µm. For type XY, the thickness
may be measured optically. Differentiation of classes shall
be required. Test samples shall be prepared in accordance
IPC-830-1 with 4.7 and Table 4-1. A glass plate may be used for ref-
eree conformal coating thickness measurement.
Figure 3-1 IPC-B-25A Multipurpose Test Board
Unless otherwise specified, the cured conformal coating
3.4 Materials The conformal coating materials and/or shall have a coating thickness as specified in Table 3-1.
boards test specimens to be coated shall be free of delete-
rious substances and formulated or prepared to meet the 3.5 Physical Requirements Interpretation of test results
requirements specified herein. shall be limited to the definitions provided herein. Obser-
vations of performance outside of the definitions shall be
3.4.1 Fungus Resistance The resistance to support or noted and may be a cause for additional testing.
attack by biological growth of the conformal coating mate-
rial shall be required per Table 1-1 and shall be determined 3.5.1 Flammability The flammability of the cured con-
in accordance with IPC-TM-650, Test Method 2.6.1. There formal coating shall be required per Table 1-1 and Table

3
IPC-CC-830A with Amendment 1 July 1999

Table 3-1 Thickness Requirements used shall be Coupon D of IPC-B-25A and the test condi-
Type of Coating IPC-B-25A or Qualification Coupon tions for Class 3 shall be 25 to 65 ± 2°C, 90 to 95% RH,
AR 25-75 µm 50 VDC bias, 160 hours cycling. After completion of the
UR 25-75 µm moisture and insulation resistance test, the panels shall be
maintained at a temperature of 25 ± 5°C and a relative
ER 25-75 µm
humidity of 50 ± 5%, for a period of 24 hours, after which
SR 50-200 µm
appearance, insulation resistance, and dielectric withstand-
XY 12.5-50 µm
ing voltage shall be tested as specified in 3.4.5, 3.6.1 and
3.6.2. Differentiation of the class requirements shall be
4-1. This test shall be performed in accordance with the
required. Test samples shall be prepared in accordance
detailed requirements of UL 94, HB (Horizontal Burning
with 4.7.1 and Table 4-1.
Test) test methods. There shall be no differentiation of class
requirements. The appearance and dielectric withstanding voltage shall
The cured conformal coating shall meet UL 94, HB (Hori- meet the requirements of 3.4.5 and 3.6.1, respectively; the
zontal Burning Test) requirements: insulation resistance values shall not be less than that
specified in Table 3-2. The requirements for appearance
a. Not have a burning rate exceeding 40 mm per minute
and DWV shall be evaluated after 24 hours at lab condi-
over a 75 mm span for specimens having a thickness of
tions. Insulation resistance shall meet the requirements of
3.0-13 mm or
Table 3-2 during humidity, after humidity and 1-2 hours at
b. Not have a burning rate exceeding 75 mm per minute lab conditions, and after 24 hours at lab conditions.
over a 75 mm span for specimens having a thickness
less than 3.0 mm, or Table 3-2 Minimum Insulation Resistance Requirement
When Measured During and After Moisture
c. Cease to burn before the 100 mm reference mark. Classes 1 and 2 100 MΩ

3.6 Electrical Requirements Class 3 500 MΩ

3.6.1 Dielectric Withstanding Voltage Test samples 3.7.2 Thermal Shock The coating materials shall be
shall be prepared in accordance with 4.7 and Table 4-1. tested in accordance with IPC-TM-650, Test Method
The coating materials shall be tested in accordance with 2.6.7.1, Class 3 (-65 to 125°C with 15 minute dwell times
IPC-TM-650, Test Method 2.5.7, Class 3 (see Table 3-2) for 100 cycles). After the test is completed the coated board
with the following exception: shall be conditioned at 25 ± 5°C and a relative humidity of
50 ± 5% for a period of 24 hours, after which appearance
The test specimen shall be the C pattern of the IPC-B-25A
and dielectric withstanding voltage shall be tested as speci-
board which has been covered with cured conformal coat-
fied in 3.6.1. Test samples shall be prepared in accordance
ing.
with 4.7 and Tables 3-1 and 4-1.
The leakage current shall be measured. There shall be no
The appearance and dielectric withstanding voltage shall
differentiation of class requirements.
meet the requirements of 3.4.5 and 3.6.1 respectively.
There shall be no disruptive discharge evidenced by flash-
over (surface discharge), sparkover (air discharge) or 3.7.3 Temperature and Humidity Aging (Hydrolytic
breakdown (puncture discharge). The leakage rate shall not Stability) This test will be performed for Class 2 and 3
exceed 10 microamperes. coatings only, per Table 1-1. One coated panel shall be
maintained as a control at 25 ± 5°C and 50 ± 5% relative
3.6.2 Insulation Resistance The coating materials shall
humidity. Three coated panels shall be tested in accordance
be tested in accordance with the initial ambient temperature
with IPC-TM-650, Test Method 2.6.11. After the 120 day
insulation resistance measurement of IPC-TM-650, Test
aging period the panels shall be returned to 25 ± 5°C and
Method 2.6.3.1. The test coupon used shall be Coupon D
50 ± 5% relative humidity and held for seven days. The
of IPC-B-25A.
panels shall also be tested for tackiness in accordance with
The cured conformal coating shall have an insulation resis- Method 4061 of FED-STD-141. Differentiation of class
tance of 100 MΩ for Classes 1 and 2, and 500 MΩ for requirements shall be required. Test samples shall be pre-
Class 3 (see Table 3-2). pared in accordance with 4.7 and Tables 3-1 and 4-1.

3.7 Environmental Requirements There shall be no evidence of softening, chalking, blister-

ing, surface tack, loss of adhesion or reversion to the liquid
3.7.1 Moisture and Insulation Resistance Coating state. The clarity of the coating must remain suitable for
materials shall be tested in accordance with IPC-TM-650, the viewing of identification markings and color codes used
Test Method 2.6.3.1, Class H, except that the test coupon to identify components over which the coating is applied.

4
July 1999 IPC-CC-830A with Amendment 1

4 QUALITY ASSURANCE PROVISION • Changes in the % solids vs. volatile of the conformal
coating as supplied by user.
4.1 Responsibility for Inspection Unless otherwise
specified, the conformal coating vendor is responsible for 4.2 Categories of Inspection The inspections specified
testing required in Table 1-1. Test facilities utilized must be are categorized as follows:
agreed upon by all concerned parties and may be those of a. Materials Inspection (see 4.3)
the conformal coating vendor, printed board assembler,
b. Qualification Inspection (see 4.5)
user, or other mutually acceptable site or combination
thereof. The user reserves the right to confirm that any of c. Quality Conformance Inspection (see 4.6)
the specified inspection procedures and test results conform
to the prescribed paragraphs. 4.3 Materials Inspection Materials inspection shall con-
sist of certification supported by verifying data based on
4.1.1 Test Equipment and Inspection Facilities test and statistical sampling that the materials used are in accor-
measuring equipment and inspection facilities shall be of dance with 1.3 and 3.4.
sufficient accuracy, quality and quantity to permit the per-
formance of required inspection and shall be established 4.4 Standard Laboratory Conditions Test measurements
and maintained by or be accessible to all concerned parties. and conditions, unless otherwise specified herein, or in the
The establishment and maintenance of a calibration system individual test specification, all shall be made at tempera-
to control the accuracy of the measuring and test equip- ture of 15 to 35°C at air pressure of 650 to 800 millimeters
ment shall be in accordance with ANSI/NCSL Z540-1 or of mercury [0.86 to 1.05 bar], and a maximum relative
ISO 10012-1. humidity of 75%. Whenever these conditions must be
closely controlled in order to obtain reproducible results for
4.1.2 Product Change The following variations in the referee purposes, temperature, relative humidity and atmo-
formulation of a conformal coating material originally spheric pressure conditions of 25 +2/-5°C, 40-50% RH,
qualified by a supplier constitutes a material change and and 650 to 800 millimeters of mercury [0.86 to 1.05 bar],
shall require a new name or product designation. The shall be specified.
extent of the name change is up to the supplier, but the
4.4.1 Permissible Temperature Variation in Environ-
change in the name or designation must be prominently
mental Chambers When chambers are used, specimens
displayed and/or obvious to the user or end-user. Addition-
under test shall be located only within the working area
ally, requalification of the changed conformal coating for-
defined as follows:
mulation to this specification shall be required. Qualifica-
tion results of the original formula are not to be assumed a. Reference temperature variation within working area:
for the new formula: The controls for the chambers shall be capable of main-
taining the temperature of any single reference point
• Changes exceeding ± 2% in the formula weight of any
within the working area within ± 2°C.
nonvolatile ingredient from the ingredient’s original for-
mula weight. b. Spatial temperature variation within working area:
Chambers shall be so constructed that, at any given
• Elimination of a nonvolatile ingredient.
time, the temperature of any point within the working
• Addition of a new nonvolatile ingredient. area shall not deviate more than 3°C from the reference
• Changes in type or dye of pigment. point, except for the immediate vicinity of specimens
• Any change in the coating results in a change in the FTIR generating heat.
spectral response on the dried coating.
4.4.2 Reference Conditions Reference conditions as a
• Addition, deletion or change in composition of ‘‘inert’’
base for calculations shall be 25°C for temperature, or an
materials in the formulation agent(s).
alternate temperature of 20°C, 760 millimeters of mercury
The following do not constitute a change in formulation of air pressure, and a relative humidity of 50%.
and do not require requalification of the change, but do
require notification of the customer: 4.5 Qualification Inspection Because samples, equip-
• Changes of less than ± 2% in the formula weight of any ment, procedures and requirements may vary between loca-
nonvolatile ingredient from the ingredient’s original for- tions, systems, or requirements when testing as required in
mula weight. 3.3.1 through 3.3.2, complete and precise reporting of the
sample preparation, test details and verifying data is
• Addition of a new volatile ingredient. required.
• Changes in volatile components (solvents) where the
residual amount in the dried coating (under recommended 4.5.1 Sample Size The number of test specimens shall
drying conditions) is less than 1% of the dried weight. be of sufficient quantity to achieve statistical confidence

5
IPC-CC-830A with Amendment 1 July 1999

required by agreement between customer and supplier. The 4.6 Quality Conformance Inspection Quality conform-
minimum number of test specimens shall be four per test. ance testing of conformal coating material and system
See Table 4-1. properties shall be accomplished through testing of
attributes as described in Table 1-1 or by statistical process
Table 4-1 Sample Sizes
control of key process parameters that are historically cor-
Number
Test to Run Substrate Needed
related to conformal coating performance requirements.
Appearance, Thickness B or C 4 coated 4.6.1 Inspection of Product for Delivery All inspection
Fluorescence C 4 coated, related items are referred back to Table 1-1, or by material
1 uncoated
and process control documentation of key process param-
Flammability D 20 coated eters correlated to product performance testing and testing
Fungus Resistance B 4 coated frequency requirements.
Dielectric Withstanding Voltage A 4 coated
Insulation Resistance and A 4 coated, 4.6.1.1 Inspection of Conformal Coating Properties
Moisture Insulation Resistance 1 uncoated After initial testing to verify conformal coating material
Thermal Shock A 4 coated properties in accordance with 3.3.1, batches of conformal
Thermal-Humidity Aging A 5 coated coating material shall be tested for compliance to the origi-
(1 as control) nal requirements at a frequency to assure continuing per-
A = IPC-B-25A Standard Test Board formance. This testing may consist of IPC-CC-830 qualifi-
B = Glass Plate
C = Copper clad laminate
cation testing or by material and process control
D = 13 mm wide by 130 mm long laminate strip (UL 94) documentation per 4.6.1. A batch or lot, as far as practical,
The samples for Appearance and Thickness may also be used for shall consist of all coating materials, as applicable, pro-
Fluorescence if Substrate C is used for all three tests.
vided by one continuous run or a combination of two or
After initial testing to verify conformal coating properties more continuous production runs offered for inspection at
in accordance with 3.3.1, batches of conformal coating one time. Lot/batch identification is required (see 5.1.2.1).
material shall be tested for compliance to the original
requirements at a frequency to assure continuing perfor- 4.6.2 Batch A batch shall consist of all coating materi-
mance. A batch or lot, as far as practical, shall consist of als or coated boards produced by one continuous run.
all coating materials, as applicable, provided by on con-
4.6.3 Specimens The test specimens shall be prepared
tinuous run or a combination of two or more continuous
in accordance with 4.7.
production runs offered for inspection at one time. Lot/
batch identification is required (see 4.6.2). 4.7 Preparation of Specimens for Evaluation or Qualifi-
cation Testing
This testing may consist of IPC-CC-830 qualification or by
material and process control documentation per 4.6.1. 4.7.1 Preparation Prior to Coating Unless otherwise
specified the specimens shall be made in accordance with
4.5.2 Inspection Routine The sample specimens shall the requirements of IPC-B-25A (Figure 3-1) with the base
be subjected to the tests specified in the appropriate column material in accordance with IPC-4101/21. Test patterns
of Table 1-1. shall be bare copper (17 microns). The prepared test pat-
terns shall be cleaned, handled and stored so at the time of
4.5.3 Failures One or more failures shall be cause for application of the coating they meet the Resistivity of Sol-
repeating the failed test after the failure mode has been vent Extract Test requirements of IPC-6012 (with a maxi-
determined and corrected. If the corrective action results in mum value of <4 µg/cm2. See 6.1 and 6.5.
a product change per paragraph 4.1.2, the entire qualifica-
tion shall be repeated. 4.7.2 Coating The conformal coating shall be applied to
the qualification specimens over the patterns and cured for
4.5.4 Test Frequency the time and temperature recommended by the vendor.
Thickness shall be as specified in 3.4.6.
4.5.4.1 Material Properties Conformal coating material
4.7.3 Number The number of specimens required for test-
property evaluation and conformance testing shall be per-
formed once on each conformal coating product and then ing shall be as outlined in Table 4-1. A minimum number
periodically to insure conformance to the original formula- of specimens per test is required per 4.5.1.
tion (Table 1-1, and Table 4-1). The periodic testing shall 5 PREPARATION FOR DELIVERY
be sufficient to ensure quality of product in accordance
with the manufacturers quality system, but all tests in Table 5.1 Containers Containers for packaging shall be in
1-1 shall be repeated at least once every two years. accordance with good commercial practices. Containers

6
July 1999 IPC-CC-830A with Amendment 1

shall be of such a corrosion resistant material that will not application. A ‘‘dirty’’ substrate will decrease values for
react, deteriorate or affect the quality of the component dielectric withstanding voltage, insulation resistance, and
coating being packaged. When coating materials consist of will adversely impact adhesion. An unclean substrate can-
more than one component each component shall be indi- not yield an accurate evaluation of the coating material.
vidually furnished in sufficient quantities necessary to react
with the other and total amount to be that specified in the 6.6 Formulation Change It is important when using
purchase order. materials such as conformal coating that the properties of
the material remain consistent throughout the life of the
5.1.2 Packaging Preservation, packing and marking product. Small changes in the composition of the product
shall be in accordance with MIL-STD-1188. may have dramatic effects upon some properties (such as
flammability, adhesions, etc.) and how the product behaves
5.1.2.1 Marking The following markings are required:
in application and in assembly. Compatibility of conformal
a. Manufacturer’s part number coating with associated materials can often be a sensitive
b. Manufacturer’s lot or batch number issue. Therefore, it is important to maintain consistent
c. Name of manufacturer product formulation and to signal users when a change has
been made. Definition of what is actually a ‘‘change’’
d. Date of manufacture (month and year)
(resulting in a ‘‘new product’’) is difficult because each
e. Expiration date component in a formulation has a different effect upon per-
f. Precautionary handling formance. See 4.1.2 for definition of a formulation change.
g. Any other specified on purchase order
6.7 Adhesion The amount of adhesion between confor-
6 NOTES mal coatings and substrates varies greatly. Some combina-
tions can be tested by the standard paint type tape test.
6.1 Conditioning It is recommended that there be a bake Other combinations which produce functional products are
of the test specimens just prior to conformal coating. It is easily removed from the board assembly (a desirable qual-
also suggested that the environment in which the conformal ity in some case). Among the factors which influence the
coating is applied should be a clean one. Monitoring of adhesion is the conformal coating type, the coating and
relative humidity, temperature and particle counts can curing process, the soldering process used, flux type, flux
ensure a better-coated assembly. cleaning (if any), solder mask type and manufacturer. The
key to the adhesion requirement is agreement between the
6.2 Intended Use These coatings are intended for use on
applicator and the end user as to what level of adhesion
printed wiring assemblies to allow them to operate in var-
produces a functional assembly and what test (if any) shall
ied environments and shall not contribute to deleterious
be used to insure that sufficient adhesion has been achieved
effects of operation. The coating materials furnished under
and maintained through any tests or environmental condi-
this specification shall be products which are qualified after
tioning.
testing per this document.
The adhesion test used shall be determined by the vendor/
6.3 Order Data assembler or assembler/user. The applicability shall be
a. Title, number and date of this specification and type determined by the end user. Alternate methods, such as
(see 1.3.1) and class (see 1.3.2) of material contained in temperature and/or humidity cycling etc., may be
the package employed. Agreement on test(s) and method(s) and the
b. Special packing instructions if required subsequent requirements(s) must be agreed to by vendor/
assembler or assembler/user.
c. Size of containers
d. Quantity of material required 6.8 Solvent Resistance The cured conformal coating
e. Other special instructions may be tested for a permanent degradation in surface char-
f. Solvent resistance acteristics as evidenced by surface tack, blistering, dilation,
or color change when exposed to the solvents defined and
6.4 Identification of Solvent Sensitive Coatings It is agreed to between vendor/assembler/user. To evaluate the
recommended that users of coatings which are sensitive to material, a coated specimen is immersed for two minutes in
certain solvents identify the board assembly to provide the the agreed upon chemical whose temperature is 25 ± 5°C.
cautionary information using labels, bar codes, color cod- After immersion the specimen is removed, air dried for 10
ing, etc. minutes at ambient laboratory conditions followed by an
oven bake for 30 minutes at 65 ± 3°C, allowed to cool to
6.5 Cleanliness It is of paramount importance that the room temperature. The specimen should then be examined
substrate material be thoroughly cleaned prior to coating for surface tack, blistering, and color change.

7
IPC-CC-830A with Amendment 1 July 1999

This Page Intentionally Left Blank

8
 ANSI/IPC-T-50 Terms and Definitions for
ASSOCIATION CONNECTING
Interconnecting and Packaging Electronic Circuits
ELECTRONICS INDUSTRIES
Definition Submission/Approval Sheet
The purpose of this form is to keep SUBMITTOR INFORMATION:
current with terms routinely used in Name:
the industry and their definitions.
Individuals or companies are Company:
invited to comment. Please
City:
complete this form and return to:
IPC State/Zip:
2215 Sanders Road Telephone:
Northbrook, IL 60062-6135
Fax: 847 509.9798 Date:

❑ This is a NEW term and definition being submitted.

❑ This is an ADDITION to an existing term and definition(s).
❑ This is a CHANGE to an existing definition.

Term Definition

If space not adequate, use reverse side or attach additional sheet(s).

Artwork: ❑ Not Applicable ❑ Required ❑ To be supplied

❑ Included: Electronic File Name:
Document(s) to which this term applies:

Committees affected by this term:

Office Use
IPC Office Committee 2-30
Date Received: Date of Initial Review:
Comments Collated: Comment Resolution:
Returned for Action: Committee Action: ❑ Accepted ❑ Rejected
Revision Inclusion: ❑ Accept Modify

IEC Classification
Classification Code • Serial Number
Terms and Definition Committee Final Approval Authorization:
Committee 2-30 has approved the above term for release in the next revision.
Name: Committee: IPC 2-30 Date:
Technical Questions
The IPC staff will research your technical question and attempt to find an appropriate specification
interpretation or technical response. Please send your technical query to the technical department via:
tel 847/509-9700 fax 847/509-9798
www.ipc.org e-mail: answers@ipc.org

IPC Technical Forums

IPC technical forums are opportunities to network on the Internet. It’s the best way to get the help you need
today! Over 2,500 people are already taking advantage of the excellent peer networking available through e-mail
forums provided by IPC. Members use them to get timely, relevant answers to their technical questions.
TechNet@ipc.org
TechNet forum is for discussion of technical help, comments or questions on IPC specifications, or other
technical inquiries. IPC also uses TechNet to announce meetings, important technical issues, surveys, etc.
ChipNet@ipc.org
ChipNet forum is for discussion of flip chip and related chip scale semiconductor packaging technologies. It is
cosponsored by the National Electronics Manufacturing Initiative (NEMI).

BENEFITS OF IPC MEMBERSHIP

ComplianceNet@ipc.org
ComplianceNet forum covers environmental, safety and related regulations or issues.
DesignerCouncil@ipc.org
Designers Council forum covers information on upcoming IPC Designers Council activities as well as
information, comment, and feedback on current design issues, local chapter meetings, new chapters forming, and
other design topics.
Roadmap@ipc.org
The IPC Roadmap forum is the communication vehicle used by members of the Technical Working Groups
(TWGs) who develop the IPC National Technology Roadmap for Electronic Interconnections.
IPCsm840@ipc.org
This peer networking forum is specific to solder mask qualification and use.
ADMINISTERING YOUR SUBSCRIPTION STATUS:
All commands (such as subscribe and signoff) must be sent to listserv@ipc.org. Please DO NOT send any
command to the mail list address, (i.e.<mail list> @ipc.org), as it would be distributed to all the subscribers.
Example for subscribing: Example for signing off:
To: LISTSERV@IPC.ORG To: LISTSERV@IPC.ORG
Subject: Subject:
Message: subscribe TechNet Joseph H. Smith Message: sign off DesignerCouncil
Please note you must send messages to the mail list address ONLY from the e-mail address to which you want to
apply changes. In other words, if you want to sign off the mail list, you must send the signoff command from the
address that you want removed from the mail list. Many participants find it helpful to signoff a list when
travelling or on vacation and to resubscribe when back in the office.
How to post to a forum:
To send a message to all the people currently subscribed to the list, just send to <mail list>@ipc.org Please note,
use the mail list address that you want to reach in place of the <mail list> string in the above instructions.
Example:
To: TechNet@IPC.ORG
Subject: <your subject>
Message: <your message>
The associated e-mail message text will be distributed to everyone on the list, including the sender. Further
information on how to access previous messages sent to the forums will be provided upon subscribing.
For more information, contact Hugo Scaramuzza
tel 847/790-5312 fax 847/509-9798
e-mail: scarhu@ipc.org www.ipc.org/html/forum.htm
 IPC World Wide Web Page www.ipc.org
Our home page provides access to information about upcoming events, publications and videos, membership,
and industry activities and services. Visit soon and often.

Education and Training

IPC conducts local educational workshops and national conferences to help you better understand emerging
technologies. National conferences have covered Ball Grid Array and Flip Chip/Chip Scale Packaging. Some
workshop topics include:
Printed Wiring Board Fundamentals High Speed Design
Troubleshooting the PWB Manufacturing Process Design for Manufacturability
Choosing the Right Base Material Laminate Design for Assembly
Acceptability of Printed Boards Designers Certification Preparation
New Design Standards
IPC video tapes and CD-ROMs can increase your industry know-how and on the job effectiveness.
For more information on programs, contact John Riley
tel 847/790-5308 fax 847/509-9798
BENEFITS OF IPC MEMBERSHIP

e-mail: rilejo@ipc.org www.ipc.org

For more information on IPC Video/CD Training, contact Mark Pritchard
tel 505/758-7937 ext. 202 fax 505/758-7938
e-mail: markp@ipcvideo.org www.ipc.org

Training and Certification

IPC-A-610 Training and Certification Program
“The Acceptability of Electronic Assemblies” (ANSI/IPC-A-610) is the most widely used specification for the
PWB assembly industry. An industry consensus Training and Certification program based on the IPC-A-610 is
available to your company.
For more information, contact John Riley
tel 847/790-5308 fax 847/509-9798
e-mail: rilejo@ipc.org www.ipc.org/html/610.htm

IPC Printed Circuits Expo

IPC Printed Circuits Expo is the largest trade exhibition in North America devoted to the PWB industry. Over 90
technical presentations make up this superior technical conference.

March 16-18, 1999 April 4-6, 2000

Long Beach, California San Diego, California

For exhibitor information, For registration information:

Contact: Ken Romeo tel 847/790-5361 fax 847/509-9798
tel 630-434-7779 e-mail: registration@ipc.org www.ipc.org

How to Get Involved

The first step is to join IPC. An application for membership can be found on page 74. Once you become a
member, the opportunities to enhance your competitiveness are vast. Join a technical committee and learn from
our industry’s best while you help develop the standards for our industry. Participate in market research
programs which forecast the future of our industry. Participate in Capitol Hill Day and lobby your Congressmen
and Senators for better industry support. Pick from a wide variety of educational opportunities: workshops,
tutorials, and conferences. More up-to-date details on IPC opportunities can
be found on our web page: www.ipc.org
For information on how to get involved, contact:
Jeanette Ferdman, Membership Manager
tel 847/790-5309 fax 847/509-9798
e-mail: JeanetteFerdman@ipc.org www.ipc.org
 Application for Site
ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES Membership

Thank you for your decision to join IPC. IPC Membership is site specific, which
means that IPC member benefits are available to all individuals employed at the
PLEASE CHECK site designated on the other side of this application.
APPROPRIATE
To help IPC serve your member site in the most efficient manner possible, please
tell us what your facility does by choosing the most appropriate member category.
CATEGORY

■ Our facility manufactures and sells to other companies, printed wiring boards or other electronic
INDEPENDENT interconnection products on the merchant market.
PRINTED
BOARD WHAT PRODUCTS DO YOU
MANUFACTURERS MAKE FOR SALE?
■ One-sided and two-sided rigid ■ Flexible printed boards ■ Discrete wiring devices
printed boards ■ Flat cable ■ Other interconnections
■ Multilayer printed boards ■ Hybrid circuits

Name of Chief Executive

Officer/President___________________________________________________________________

Our facility assembles printed wiring boards on a contract basis and/or offers other electronic
■ interconnection products for sale.
INDEPENDENT
PRINTED BOARD ■ Turnkey ■ Through-hole ■ Consignment
ASSEMBLERS ■ SMT ■ Mixed Technology ■ BGA
EMSI ■ Chip Scale Technology
COMPANIES

Name of Chief Executive

Officer/President___________________________________________________________________

■ Our facility purchases, uses and/or manufactures printed wiring boards or other electronic interconnection
OEM – products for our own use in a final product. Also known as original equipment manufacturers (OEM).
MANUFACTURERS
OF ANY END IS YOUR INTEREST IN:
PRODUCT USING ■ purchasing/manufacture of printed circuit boards
PCB/PCAS ■ purchasing/manufacturing printed circuit assemblies
OR CAPTIVE
MANUFACTURERS What is your company’s main product line?
OF PCBS/PCAS
_________________________________________________________________________________

■ Our facility supplies raw materials, machinery, equipment or services used in the manufacture or
INDUSTRY assembly of electronic interconnection products.
SUPPLIERS What products do you supply?
_________________________________________________________________________________

■ We are representatives of a government agency, university, college, technical institute who are directly
concerned with design, research, and utilization of electronic interconnection devices. (Must be a non-
GOVERNMENT profit or not-for-profit organization.)
AGENCIES/
ACADEMIC
TECHNICAL
LIAISONS
Please be sure to complete both pages of application.
Application Site
for Membership ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES

Company Name

Street Address

City State Zip Country

Main Phone No. Fax

Primary Contact Name

Title Mail Stop

Phone Fax e-mail

Senior Management Contact

Title Mail Stop

Phone Fax e-mail

Please check one:

❏ $1,000.00 Annual dues for Primary Site Membership (Twelve months of IPC membership begins
from the time the application and payment are received)

❏ $800.00 Annual dues for Additional Facility Membership: Additional membership for a site within
an organization where another site is considered to be the primary IPC member.

❏ $600.00** Annual dues for an independent PCB/PWA fabricator or independent EMSI provider with
annual sales of less than $1,000,000.00. **Please provide proof of annual sales.

❏ $250.00 Annual dues for Government Agency/University/not-for-profit organization

TMRC Membership ❏ Please send me information on Membership in the Technology Marketing

Research Council (TMRC)

AMRC Membership ❏ Please send me information for Membership in the Assembly Marketing
Research Council (AMRC)
Payment Information

Enclosed is our check for $

Please bill my credit card: (circle one) MC AMEX VISA DINERS

Card No. Exp date _______________

Authorized Signature

Mail application with Fax/Mail application with

check or money order to: credit card payment to:

IPC IPC
Dept. 851-0117W 2215 Sanders Road
PLEASE ATTACH BUSINESS CARD
P.O. Box 94020 Northbrook, IL 60062-
OF OFFICIAL REPRESENTATIVE HERE
Palatine IL 60094-4020 6135
Tel: 847 509.9700
Fax: 847 509.9798
 ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES

Standard Improvement Form IPC-CC-830A with Amendment 1

The purpose of this form is to provide the Individuals or companies are invited to If you can provide input, please complete
Technical Committee of IPC with input submit comments to IPC. All comments this form and return to:
from the industry regarding usage of will be collected and dispersed to the IPC
the subject standard. appropriate committee(s). 2215 Sanders Road
Northbrook, IL 60062-6135
Fax 847 509.9798

1. I recommend changes to the following:

Requirement, paragraph number
Test Method number , paragraph number

The referenced paragraph number has proven to be:

Unclear Too Rigid In Error
Other

2. Recommendations for correction:

3. Other suggestions for document improvement:

Submitted by:

Name Telephone

Company E-mail

Address

City/State/Zip Date
ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES
ISBN #1-580982-34-4 2215 Sanders Road, Northbrook, IL 60062-6135
Tel. 847.509.9700 Fax 847.509.9798
www.ipc.org