Kem A4075 Als70 71-3316257
Kem A4075 Als70 71-3316257
Overview Applications
The KEMET ALS70/71 high capacitance voltage (CV) screw Typical applications for KEMET's ALS70/71 series
terminal capacitors offer tremendous performance and of capacitors include alternative energy, smoothing,
reliability in a wide range of case sizes and voltage ratings, energy storage or pulse operation, in telecommunication
featuring high ripple currents and a long life performance. demanding power supplies, process control, AC motor
Volumetric efficiency ensures the maximum capacitance control, traction, welding, and measuring.
capability in a smaller size. They are ideally suited for
industrial and commercial applications, demanding high
reliability and long life expectancy such as frequency
converters, uninterruptible power supply (UPS) systems
and switch mode power supplies (SMPS).
Benefits
• Maximum capacitance capability in a smaller size
• Long life, up to 20,000 hours at +85°C (VR , IR applied)
• High ripple current
• Excellent surge voltage capability
• PET sleeve and Lexan disc are recognized to UL: QMTR2,
UL No. E358957 (Other options available upon request)
• Optimized designs available upon request
Performance Characteristics
Procedure Requirements
0.75 mm displacement amplitude
or 10 G maximum acceleration
Case Length < 220 mm Vibration applied for three 2-hour
sessions at 10 – 55 Hz No leakage of electrolyte
Vibration Test Specifications (Capacitor clamped by body) or other visible damage
Deviations in capacitance from
0.35 mm displacement amplitude initial measurements must not
or 5 G maximum acceleration exceed Δ C/C < 5%
Case Length ≥ 220 mm Vibration applied for three
0.5-hour sessions at 10 – 55 Hz
(Capacitor clamped by body)
Standards IEC 60384–4 long life grade 40/85/56
Surge Voltage
Voltage (VDC)
Test Condition
25 40 63 100 200 250 350 400 450 500 550 600 630
≤ 30 seconds surge followed
by a no load period of 330 28.75 46 72.5 115 230 288 385 440 495 550 605 660 690
seconds, 1,000 cycles at +85°C
Temperature +85°C
Voltage The sum of DC voltage and the peak AC voltage must not exceed the rated voltage of the capacitor
Performance The following specifications will be satisfied when the capacitor is tested at +20°C
≤ 160 V Within 15% of the initial value
Capacitance Change
> 160 V Within 10% of the initial value
Equivalent Series Resistance Does not exceed 150% of the initial limit
Dimensions – Millimeters
Dimensions in mm
Approximate
Mounting Mounting
Size Code D L LT S V Weight
Stud (M x H) Clamps
Grams
±1 ±2 ±1 ±0.5 Nominal ±1
DA 36 52 58.5 12.8 8.0 M8 x 12 75 V3/H2/2736
DB 36 62 67.5 12.8 8.0 M8 x 12 90 V3/H2/2736
DE 36 82 87.5 12.8 8.0 M8 x 12 115 V3/H2/2736
DF 36 105 111.5 12.8 8.0 M8 x 12 140 V3/H2/2736
KE 51 82 86.5 22.2 13.7 M12 x 16 220 V4/2737
KF 51 105 110.5 22.2 13.7 M12 x 16 300 V4/2737
LM 63.5 131 135 28.5 15.8 M12 x 16 600 V8
MF 66 105 110.5 28.5 15.8 M12 x 16 505 V10/2738
NF 77 105 110.5 31.8 19.0 M12 x 16 690 V11
NJ 77 115 119 31.8 19.0 M12 x 16 766 V11
NP 77 146 150.5 31.8 19.0 M12 x 16 960 V11
NW 77 169 174 31.8 19.0 M12 x 16 1,160 V11
NS 77 194 198 31.8 19.0 M12 x 16 1,400 V11
NT 77 220 224.5 31.8 19.0 M12 x 16 1,450 V11
QC 90 67 71.5 31.8 25.0 M12 x 16 615 V90N
QH 90 98 103.5 31.8 25.0 M12 x 16 900 V90N
QM 90 131 135 31.8 25.0 M12 x 16 1,300 V90N
QP 90 146 149.5 31.8 25.0 M12 x 16 1,345 V90N
QW 90 169 174 31.8 25.0 M12 x 16 1,500 V90N
QS 90 194 198 31.8 25.0 M12 x 16 1,800 V90N
QT 90 220 223.5 31.8 25.0 M12 x 16 2,000 V90N
Note: Dimensions include sleeving. LT listed is for A-type termination code. Information for other termination codes is available upon request.
Mounting Clamps, other accessories and hardware are all sold separately and not included with the capacitor. See Accessory Datasheet.
Dimensions – Inches
Dimensions in inches
Size Code Mounting Stud
D L LT S V
(M x H)
±0.039 ±0.078 ±0.039 ±0.019 Nominal ±0.039
DA 1.417 2.047 2.303 0.5039 0.3150 M8 x 0.472
DB 1.417 2.441 2.657 0.5039 0.3150 M8 x 0.472
DE 1.417 3.228 3.445 0.5039 0.3150 M8 x 0.472
DF 1.417 4.134 4.390 0.5039 0.3150 M8 x 0.472
KE 2.008 3.228 3.406 0.8740 0.5394 M12 x 0.630
KF 2.008 4.134 4.350 0.8740 0.5394 M12 x 0.630
LM 2.5 5.157 5.315 1.1220 0.6220 M12 x 0.630
MF 2.598 4.134 4.350 1.1220 0.6220 M12 x 0.630
NF 3.032 4.134 4.350 1.2520 0.7480 M12 x 0.630
NJ 3.032 4.528 4.685 1.2520 0.7480 M12 x 0.630
NP 3.032 5.748 5.925 1.2520 0.7480 M12 x 0.630
NW 3.032 6.654 6.850 1.2520 0.7480 M12 x 0.630
NS 3.032 7.638 7.795 1.2520 0.7480 M12 x 0.630
NT 3.032 8.661 8.839 1.2520 0.7480 M12 x 0.630
QC 3.543 2.638 2.815 1.2520 0.9843 M12 x 0.630
QH 3.543 3.858 4.075 1.2520 0.9843 M12 x 0.630
QM 3.543 5.157 5.315 1.2520 0.9843 M12 x 0.630
QP 3.543 5.748 5.886 1.2520 0.9843 M12 x 0.630
QW 3.543 6.654 6.850 1.2520 0.9843 M12 x 0.630
QS 3.543 7.638 7.795 1.2520 0.9843 M12 x 0.630
QT 3.543 8.661 8.799 1.2520 0.9843 M12 x 0.630
Note: Dimensions include sleeving. LT listed is for A-type termination code. Information for other termination
codes is available upon request.
Termination Tables
Termination Code
A C G H P U
Diameter (mm/inches)
36/1.417 • •
51/2.008 • •
63.5/2.5 • • •
66/2.598 • • •
77/3.032 • • • • • •
90/3.543 • • • •
TD Polarity
TD Polarity TD
Optional Mounting T Z Mark Mark W = 15.9 mm/0.626 inch
Stud (M x H) (From Deck)
Case Polarity
Due to the presence of electrolyte in the capacitor, the aluminum can and stud mounting will essentially be at the same
polarity as the negative terminal. We recommend that the stud and can be insulated (see accessories for insulating nuts).
Terminations
Aluminum inserts with M5 threads as standard, have a maximum torque 2NM. Optional M6 threaded inserts have a
maximum torque 4NM. Maximum torque for stud mounting M8:4NM and M12:8NM.
Shelf Life
The capacitance, ESR and impedance of a capacitor will not change significantly after extended storage periods, however,
the leakage current will very slowly increase. KEMET products are particularly stable and allow a shelf life in excess of three
years at 40°C. See sectional specification under each product series for specific data.
Reliability
The reliability of a component can be defined as the probability that it will perform satisfactorily under a given set of
conditions for a given length of time.
In practice, it is impossible to predict with absolute certainty how any individual component will perform. Therefore, we
must utilize probability theory. It is also necessary to clearly define the level of stress involved (e.g., operating voltage, ripple
current, temperature and time). Finally, the meaning of satisfactory performance must be defined by specifying a set of
conditions that determine the end of life of the component.
Reliability as a function of time, R(t), is normally expressed as: R(t)=e-λt, where R(t) is the probability that the component will
perform satisfactorily for time t, and λ is the failure rate.
Failure Rate
The failure rate is the number of components failing per unit time. The failure rate of most electronic components follows
the characteristic pattern:
• Early failures are removed during the manufacturing process.
• The operational life is characterized by a constant failure rate.
• The wear out period is characterized by a rapidly increasing failure rate.
The failures in time (FIT) are given with a 60% confidence level for the various type codes. By convention, FIT is expressed
as 1 x 10−9 failures per hour. Failure rate is also expressed as a percentage of failures per 1,000 hours, e.g., 100 FIT = 1 x 10-7
failures per hour = 0.01%/1,000 hours.
MTBF
The mean time between failures (MTBF) is simply the inverse of the failure rate.
MTBF= 1/λ
operational life
Time
The failure rate is derived from our periodic test results. The failure rate (λR) is, therefore, only given at test temperature for
life tests. An estimation is also given at 40°C. The expected failure rate for this capacitor range is based on our periodic test
results for capacitors with structural similarity. Failure rate is frequently quoted in FIT (Failures In Time) where 1 FIT = 1 x 10-9
failures per hour. Failure rate per hour includes both catastrophic and parametric failures.
Environmental Compliance
All Part Numbers in this datasheet are Reach and RoHS compliant and Halogen-Free.
As an environmentally conscious company, KEMET is working continuously with improvements concerning the environmental
effects of both our capacitors and their production.
In Europe (RoHS Directive) and in some other geographical areas such as China, legislation has been put in place to prevent
the use of some hazardous materials, such as lead (Pb), in electronic equipment. All products in this catalog are produced
to help our customers' obligations to guarantee their products and fulfill these legislative requirements. The only material of
concern in our products has been lead (Pb), which has been removed from all designs to fulfill the requirement of containing
less than 0.1% of lead in any homogeneous material. KEMET will closely follow any changes in legislation worldwide and
make any necessary changes in its products, whenever needed.
Some customer segments such as medical, military and automotive electronics may still require the use of lead in electrode
coatings. To clarify the situation and distinguish products from each other, a special symbol is used on the packaging labels
for RoHS compatible capacitors.
Due to customer requirements, there may appear additional markings such as lead-free (LF), or lead-free wires (LFW) on the
label.
© KEMET Electronics Corporation • One East Broward Boulevard A4075_ALS70_71 • 5/30/2024 7
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Screw Terminal Aluminum Electrolytic Capacitors – ALS70/71, High CV, +85°C
Mechanical Data
Polarity and Reversed Voltage
Aluminium Electrolytic capacitors manufactured for the use in DC applications contain an anode foil and a cathode foil. As
such, they are polarized devices and must be connected with the +ve to the anode foil and the -ve to the cathode foil. If this
were to be reversed, then the electrolytic process that took place in forming the oxide layer on the anode would be recreated
in trying to form an oxide layer on the cathode. In forming the cathode foil in this way, heat would be generated and gas
would be given off within the capacitor, usually leading to a catastrophic failure.
The cathode foil already possesses a thin stabilized oxide layer. This thin oxide layer is equivalent to a forming voltage
of approximately 2 V. As a result, the capacitor can withstand a voltage reversal of up to 2 V for short periods. Above this
voltage, the formation process will commence. Aluminium Electrolytic capacitors can also be manufactured for the use in
intermittent AC applications by using two anode foils in place of one anode and one cathode.
Mounting Position
The capacitor can be mounted in any position as long as the safety vent can operate. It is possible for some electrolyte to be
expelled. As this is a conducting liquid, suitable precautions should be initiated by the system designer to avoid secondary
short circuits.
The capacitors are designed to be mounted in free air and are not suitable for submersion in liquid.
Insulating Resistance
≥ 100 MΩ at 100 VDC across insulating sleeve.
Voltage Proof
≥ 3,500 VDC across insulating Sleeve
≥ 2,500 VAC across insulating Sleeve
Safety Vent
A safety vent for overpressure is featured on the terminal deck in the form of a rubber plug, designed to relieve build-up of
internal pressure due to overstress or catastrophic failure.
Marking
KEMET Logo
Rated Capacitance,
Capacitance Tolerance
Rated Voltage (VDC)
Climatic Category
Part Number Code
Date of Manufacture,
Batch Number
Country of Origin
Construction
Deck
Paper Spacer Impregnated
with Electrolyte Polarity Mark (+)
(First Layer)
Screw Terminal (+)
Cathode Aluminum Foil,
Etched (Second Layer)
Safety Vent Plug
Paper Spacer Impregnated Anode Aluminum Foil, Etched,
with Electrolyte (Third Layer) Covered with Aluminum Oxide
(Fourth Layer) Screw Terminal (−)
Construction Data
The manufacturing process begins with the anode foil being
electrochemically etched to increase the surface area and then
“formed” to produce the aluminum oxide layer. Both the anode and Extended cathode
cathode foils are then interleaved with absorbent paper and wound
into a cylinder. During the winding process, aluminum tabs are Anode foil
attached to each foil to provide the electrical contact.
The deck, complete with terminals, is attached to the tabs and then Foil tabs
folded down to rest on top of the winding. The complete winding
is impregnated with electrolyte before being housed in a suitable
container, usually an aluminum can, and sealed. Throughout the
Tissues
process, all materials inside the housing must be maintained at the
highest purity and be compatible with the electrolyte. Cathode foil
Each capacitor is aged and tested before being sleeved and packed.
The purpose of aging is to repair any damage in the oxide layer Etching
and thus reduce the leakage current to a very low level. Aging is
normally carried out at the rated temperature of the capacitor and
Forming
is accomplished by applying voltage to the device while carefully
controlling the supply current. The process may take several hours to
complete. Winding
Electrical: Mechanical/Visual:
• Leakage current • Overall dimensions Sleeving
• Capacitance • Torque test of mounting stud
• ESR • Print detail
Packing
• Impedance • Box labels
• Tan Delta • Packaging, including packed
quantity
Disclaimer
YAGEO Corporation and its affiliates do not recommend the use of commercial or automotive grade products for high reliability applications or manned space flight.
All product specifications, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET specifically disclaims – any warranty concerning suitability for a specific customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes
no obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury
or property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicated or that other
measures may not be required.
KEMET requires its products to be packaged and shipped on pallets. This is because KEMET’s products are specifically designed to be packed onto pallets during
shipment. If for any reason, the products are removed from pallets by the shipping party and shipped to the end customer, then additional external protection is
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with filling material, and afterwards sealing the box. If this packing and packaging guideline is not followed by the shipping party, the shipping party, and not KEMET,
will be held responsible for any packaging, packing and/or product damages upon delivery of the products to the end customer. KEMET hereby disclaims any liability
for damages to the products or otherwise that have been, or threaten to be, inflicted, result from or are in any way related to the packaging, packing or damage by the
shipping party in contravention of the packing and packaging guidelines herein.
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