IPC-CC-830B with Amendment 1 Qualification and Performance of Electrical Insulating Compound for Printed Wiring Assemblies October 2008 Supersedes IPC-CC-830B August 2002 A standard developed by IPC Association Connecting Electronics Industries Circ.The Principles of ‘Standardization Notice IPC Position Statement on Specification Revision Change Why is there a charge for this document? ‘©Copyright 2008. IPC, Bannockburn, Iinois, USA. 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For more information on membership in IPC, please visit wwwipe.org or call 847/591-2872, ‘Thank you for your continued suppor. sarved under both Intemational and Pan-American copyright conventions. Ary ‘copying, scanning or other reproduction of these materials wihout the prior written consent of the copyright holder is strictly prohibited and Constitutes infringement under the Copyright Law of the United Stats,C1Pc. Supersedes: IPC-CC-830B - August 2002 IPC-CC-830A with Amendment 1 - July 1999 IPC-CO-830A - October 1998 IPC-CC-890 - January 1984 IPC-CC-830B with Amendment 1 Qualification and Performance of Electrical Insulating Compound for Printed Wiring Assemblies Developed by the Conformal Coating Task Group (5-38a) of the Cleaning and Coating Committee (5-30) Users of this publication are encouraged to participate in the development of future revisions. Contact: IPC 3000 Lakeside Drive, Suite 3098 Bannockburn, Ilinois 60015-1249 Tol 847 615.7100 Fax 847 616.7105IPC-CC-8308 with Amendment 1 October 2008 Acknowledgment Any document involving a complex technology draws material from a vast number of sources. While the principal members of the Conformal Coating Task Group (5-33a) of the Cleaning and Coating Committee (5-30) are shown below, it is not possible 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 Committee Chair Douglas O. Pauls Rockwell Collins Vice Chair Debora L. Obitz, ‘Trace Laboratories - Bast ‘Conformal Coating Task Group Chair John P. Waryold HumiSeal Division of ‘Chase Corporation ‘Vice Chair Debora L. Obitz ‘Trace Laboratories - East ‘Technical Liaisons of the IPC Board of Directors Peter Bigelow IMI Ine. Sammy Yi Flextronics International Conformal Coating Task Group David Adams, Rockwell Collins Greg Alexander, Ascentech, LLC Gustavo Arredondo, Para ‘Tech Coating Ine. Paul Berry, Dow Coming Corporation Gerald Leslie Bogert, Bechtel Plant Machinery, Inc. Calette Chamness, U.S. Army ‘Aviation & Missile Command David Corbett, Defense Supply Center Columbus Rudiger Dietrich, Lackwerke Peters GmbH & Co KG ‘Mahendra Gandhi, Northrop Grumman Space Technology Hue Green, Lockheed Martin Space ‘Systems Company Michael Green, Lockheed Martin Space Systems Company Amy Hagnauer, Raytheon Company Steve Henly, Acota Limited (Christopher Hunt, National Physical Laboratory Joseph Kane, BAB Systems Platform Solutions Jason Keeping, Colestica International Ine William Kenyon, Global Centre Consulting Phil Kinner, HumiSeal Division of Chase Corporation Sven Kramer, Lackwerke Peters GmbH & Co KG Richard Kraszevski, Plexus Corp. Vijay Kumar, Lockheed Martin Missile & Fire Control Kenneht Manning, Raytheon Company Renee Michalkiewicz, Trace Laboratories - East Roger Miedico, Raytheon Company Graham Naisbitt, Gen3 Systems Limited David Nelson, Raytheon Company Lynn Norman, Continental Automotive Systems US, Ine, Victor Powell, L-3 Communications Aviation Recorders Barry Ritchie, Dow Corning Corporation John Rohlfing, Delphi Electronics and Safety Henry Sanfileben, Delphi Electronics and Safety Jeffrey Sargeant, HumiSeal Lowell Sherman, Defense Supply Center Columbus Gordon Sullivan, Huntsman ‘Advanced Technology Center ‘Manfred Supa, Lackwerke Peters GmbH & Co KG Crystal Vanderpan, Underwriters Laboratories Inc. David Vaughan, Taiyo America Inc. Fonda Wu, Raytheon Company Lamar Young, Specialty Coating Systems Ine.(Cctober 2008 |PC-CC-8908 with Amencment 1 Table of Contents 1 SCOPE 1 3.7.1 Moisture and Insulation Resistance 4 LL Scope nn 13:72. Thermal Shock : 4 1.2. Purpose 13.73. Temperature and Humidity Aging 13 Classification 1 (Hydrolytie Stability) 4 13.1 Types "| 38 Special Requirements. 5 13.2 Classes 1 4 QUALITY ASSURANCE PROVISION .. 5 1.4 Interpretation . 14.1 Responsibility for Inspection... ss 5 @ “APPLICABLE DOCUMENTE 1 42. Categories of Inspection and Frequency 5 aa cae 1 4241 Qualification Inspection : 5 Aaa 7 422. Qualification Retention Inspection 3 23 American Society for Testing of Materials .....2. 423 Quality Conformance Inspection... = 24 Underwriters Laboratories 2 eae at 25 ANSE “3 44 Test Bquipment and nd Inspection Facilities 5 a6 Su. “3 441 Standard Laboratory Conditions 5 44.2 Permissible Temperature Variation in 3 REQUIREMENTS . 2 Environmental Chambers 6 3.1 General Requirements 2 443. Reference Conditions .. 6 3.1.1 Terms and Definitions 2 45 Inspection Routine. 6 3.1.2 Conflict 5 : sw 46 Inspection Sampling 6 3.2 Inspection and ‘Testing Requirements 2 46.1 Test Vehicles 6 3.2.1 Qualification Inspection and Testing ..... 2 46.2 Sample Size 6 3.2.2 Qualification Retention Inspection and Testing ...2 4.6.3 Preparation Prior to Coating .. 6 3.2.3 Quality Conformance Inspection Testing 3 464 Coating eT 3.24. Additional Testing .. 3 AT Failures 1 3.3. Materials Requirements .. 3 48 _ Inspection Reporting 7 33.1 Materials 3 48.1 Qualification Reporting 7 33.2. Shelf Life 3 482 Qualification Retention Reporting at 333 Cure on 3 483 Quality Conformance Reporting 7 3.4 Chemical Requirements 3. & _ PREPARATION FOR DELIVERY 7 34.1, Fourier Transform Inared Spectroscopy SA Containers 7 Test (FTIR) ~~3 52 Packaging 3 2.5. Physical Requirements 453 Marking 3 35.1 Viscosity 4 352 Appearance seat Neer - Bes" Fudeiies 6A Order Dat 8 4 Fungus Resistance eee teers _ 63. Conditioning 8 355° Flexibility . =4 34 Climtinen i 356 Flammability EH ate aaeioa z 3.6 Electrical Requirements -4 66 Sclveat Compaiibiity ~ a 3.6.1. Dielectric Withstanding Voltage (DWV) Se a ea eel 4 3.7 Environmental Requirements ... Conformal Coatings ...IPC-CC-8908 with Amendment 1 October 2008 ‘Appendix A Example of Qualification Inspection Report 7 Appendix B Example of Qualification Retention Inspection Report 10 ‘Appendix © Example of Quality Conformance Inspection Report . tl Figures Figue 4-1 IPC-B-258 ort Figue 42 Test Coupon wih "Y" Shape Patter 7 Tables Table 3-1 Requirements for Qualification, Qualification Retention and Quality Conformance of Conformal Coating Products 3 Table 4-1 Test Vehiclos and Sample $1268 won: 6 ‘Table 4-2 Thiokness Requirements on Test Vehicle 7(ctober 2008 IPC-CC-8908 with Amendment 1 Qualification and Performance of Electrical Insulating Compound for Printed Wiring Assemblies 1 SCOPE 4.4 Scope This standard establishes qualification and conformance requirements for electrical insulating com- pounds (conformal coatings). It has been designed and con- siructed with the intent of obtaining maximum confidence in the materials with minimum test redundancy. This stan- dard covers: * The qualification and qualification retention ofthe confor- ‘mal coating material (Table 3-1, Column A and B), * The quality conformance of conformal costing. material properties (Table 3-1, Column ©), For the purpose of this standard, the term conformal coat- ing is used herein when referring to a type of protective coating for use on printed wiring assemblies. The confor- mal coating is intended to provide protection from moisture and contamination and provide electrical insulation; not as a sole source of mechanical support. For the purpose of this standard, inspections are performed oon standardized test vehicles instead of real production assemblies. A standardized test vehicle refers to the test vehicle specified per test method indicated, coated with the 4.2 Purpose With siandardized testing on standardized test vehicles under test conditions specified in test methods listed herein, this standard enables a manufacturer to qualify his conformal coating product and express the ‘qualification it possesses. This standard also enables the ‘manufacturer to attest the conformance of the quality of production to the qualification of each product. 41.3 Classification 1.3.1 Types Conformal coatings shall be categorized into types by the cured chemistry of the coating. The type for multifunctional materials shall be based on the chemis- tty type which is the highest percentage by weight. Conformal coatings shall be of the following types: ‘Type AR — Acrylic ‘Type ER — Epoxy ‘Type SR — Silicone ‘Type UR — Polyurethane ‘Type XY — Paraxylylene T wwwpoow 1.8.2 Classes Although previous versions of IPC-CC- '830 made reference to Class A and Class B coating classi- fications, these classifications have been removed. To be qualified to this specification, a coating must be hydrolyti- cally stable (formerly Class B). Non-hydrolytically stable coatings (formerly Class A) no longer meet the require ments of this specification and usage will only be As ‘Agreed Between User and Supplier (AABUS). Coatings that meet the requirements of Class B coatings in previous document revisions meet the requirements of this revision, Note: Earlier versions of this specification, as well as other IPC documents, made reference to “Class 1,” “Class and “Class 3” inspection and testing requirements for these classes that were not directly correlated to the previ- ous Class A and B requirements. 4.4 Intorprotation “Shall,” the imperative form of the verb, is used throughout this standard whenever a require ‘ment is intended to express a provision that is mandatory. Deviation from a shall” requirement may be considered if sufficient data is supplied to justify the exception. ‘The words “should” and “may” are used whenever it is necessary to express nonmandatory provisions. “Will” is used to express a declaration of purpose. To assist the reader, the word “shall” is presented in bold characters 2 APPLICABLE DOCUMENTS The following documents of the issue currently in effect form a part of this standard to the extent specified herein, 2.1 IPO! IPC-B-25A Multipurpose Test Board 1PC-T-50 Terms and Definitions for Interconnecting and Packaging Electronic Circuits 1PC-TM-650 ‘Test Methods Manual 24.5.1 Flexibility 2.57.1 Dielectric Withstanding Voltage - Polymeri Conformal Coating 2.6.1.1 Fungus Resistance - Conformal Coating 2.6.3.4 Moisture and Insulation Resistance - Conformal Coating 2. Curent and relsed IPC Test Methods ara avaiable though IPC-TN-650subserpson and onthe IPC Web sto (wpe. orghimlAesimethods hn.|PC-CO-8908 with Amendment 4 cteber 2008 2.6.7.1 ‘Thermal Shock - Conformal Coating 2.6.11.1 Hydrolytic Stability - Conformal Coating IPC-4101 Specification for Base Materials for Rigid and ‘Multilayer Printed Boards 'Pc-6012 Sectional Standard for Qualification of Rigid Printed Boards 2.2 Government? MIL4-46058 Insulating Compound, Elect Printed Circuit Assemblies) I (For Coating MIL-STD-1188 Commercial Packaging of Suppliers and Equipment FED-STD-141 Paint, Varnish, Lacquer and Related Materi- als: Methods of Inspection, Sampling and Testing, Method 4061 and Method 2012 2.3 American Society for Testing of Materials! ASTM-D-1005 Measurement of Dry Film Thickness of Organic Coatings ASTULD-1064 Viscosity of Adhesives, Tests for 2.4 Underwriters Laboratories* UL 94 Flammability 2.5 ANSIE NCSL 2540-1 Calibration Laboratories and Measuring and ‘Test Equipment 2.6 IS07 180 10012-1 Quality Assurance Requirements for Measur- ing Equipment ~ Part 1: Metrological Confirmation System for Measuring Equipment 9 REQUIREMENTS 3.1 General Requirements 8.1.1 Terms and Definitions Definitions of terminology applicable to this standard shall be in accordance with IPC- T-50 and as stated in 3.1.1.1 3.4.1.4 AABUS This is an acronym for “As Agreed Between User and Supplier.” Indicates additional or alter- nate requirements to be decided between the user and sup- 3 ipastinage depeata milquckeoarty 4 neastmorg S.wrawcon 8. wrmareiorg 7 niso.o9 plier in the procurement documentation, Examples include ‘contractual requirements, modifications to purchase docu- ‘mentation, and information on the drawing. Agreements can be used to define test methods, conditions, frequencies, categories or acceptance criteria within a test, if not already established, 3.4.2 Conflict In the event of a conflict between the requirements of this standard and procurement document, the procurement document shall take precedence. In the event of a conflict between the test parameters of this stan- dard and the test methods, or a conflict between the requirements in this standard and the applicable documents listed in Section 2, this standard shall take precedence 3.2 Inspection and Testing Requirements Groups of inspection and test listed in Table 3-1 shall be performed to verify the ability of a conformal coating product to meet the qualification and/or conformance requirements of this standard using the test methods described herein. 3.2.4 Qualification Inspection and Testing Qualifica- tion to this standard is achieved when a conformal coating product meets the requirements listed in Column A of Table 3-1, Tests shall be performed in accordance with the test ‘methods specified using test specimens prepared in compli- nee with 4.6, A qualification inspection report shall be completed in accordance with 4,8 and relevant test data retained as substantiation for the qualification, An example of qualification inspection report format is shown in Appendix A. When a primer material is used in conjuction with a coat- ing in qualification testing, the primer used will be docu- ‘mented in the qualification report. Conformal coatings presently qualified to MIL-I-46058 shall also be recognized as mecting the requirements of IPC-CC-830. These products currently qualified or in the Process of being requalified to MIL-1-46058 prior to the Publish date of this document will also be recognized as ‘meeting the requirements of this document. It should be noted that MIL-I-46058 is inactive for new designs. 3.2.2 Qualification Retention Inspection and Testing Qualification to this standard can be retained when a con- formal coating product meets the requirements listed in Column B of Table 3-1, Tests shall be performed in accor- ance with the test methods specified using test specimens, prepared in compliance with 4.6 at a frequency defined in 4.2.2.1, Pertinent test results shall be compared with the z