A543EF431M450A

Snap-In Aluminum Electrolytic Capacitors **ALA8D, +105°C** 

## **Overview** 

## **Applications** 

The KEMET ALA snap-in capacitors are designed for automotive applications. They can withstand vibration up to 20 G in accordance with the demanding requirements of the Automotive Electronics Council's AEC–Q200 qualification. The ALA8D capacitance values cover a range from 200 to 620 µF and a voltage range of 400 to 500 V. 

Typical applications for the ALA8D capacitor is mainly in the field of e-mobility, such as on-board chargers, inverters, or wall boxes. 

## **Benefits** 

- Designed for automotive usage 

- Vibration proof 20 g 

- AEC–Q200 

- Long life, up to 9,000 hours at +105°C (VR IR applied) 

- High ripple current 

- High voltage 

- 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 

## **Part Number System** 

|**ALA8D**|**A**|**361**|**CE**|**450**|
|---|---|---|---|---|
|Series|Termination|Capacitance Code (µF)|Size Code|Rated Voltage (VDC)|
|Snap-In Aluminum<br>Electrolytic|See Termination Table|First two digits represent<br>significant figures. Third<br>digit specifies number of<br>zeros.|See Dimension Table|400 = 400<br>450 = 450<br>500 = 500|



**Built Into Tomorrow** 

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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **Performance Characteristics** 

|**Item**|**Performance Characteristics**|**Performance Characteristics**|**Performance Characteristics**|
|---|---|---|---|
|Capacitance Range|200 – 620 µF|||
|Rated Voltage|400 – 500 VDC|||
|Operating Temperature|−40 to +105°C|||
|Storage Temperature|−55 to +105°C|||
|Capacitance Tolerance|±20% at 100 Hz/+20°C|||
|Operational Lifetime|D (mm)|Rated Voltage and Ripple Current<br>at +105°C(hours)|Rated Voltage at +105°C<br>(hours)|
||25|6,000|10,000|
||30|7,000|11,000|
||35|8,000|13,000|
||40|9,000|14,000|
|End of Life Requirement|VR> 100 VDC ∆ C/C < ±15%, ESR < 3 x ESR Limit, IL < initial specifed limit|||
|Shelf Life|2,000 hours at +85°C or 30,000 hours at +40°C 0 VDC|||
|Leakage Current|I = 0.003 CV or 6,000 µA (whichever is smaller)|||
||C = rated capacitance (µF), V = rated voltage (VDC). Voltage applied for 5 minutes at +20°C.|||
|Vibration Test Specifcations||Procedure|Requirements|
||D ≤ 40 mm|1.5 mm displacement amplitude<br>or 20 G maximum acceleration.<br>Vibration applied for three directions<br>of 4-hour sessions at 10 – 2,000 Hz.<br>(Capacitor clamped by body.)|No leakage of electrolyte<br>or other visible damage.<br>Deviations in capacitance from<br>initial measurements must not<br>exceed ∆ C/C < 5%|
|Standards|AEC–Q200: aluminum electrolytic capacitors<br>IEC 60384–4 long life grade 40/85/56|||



## **Surge Voltage** 

|**Test Condition**|**Voltage (VDC)**|**Voltage (VDC)**|**Voltage (VDC)**|
|---|---|---|---|
||400|450|500|
|≤ 30 second surge followed by a no load period<br>of 330 seconds, 1,000 cycles at +105°C|440|495|550|



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## **Test Method & Performance** 

||**Endurance Life Test**|**Endurance Life Test**|
|---|---|---|
|Conditions|Performance||
|Temperature|+105°C||
|Test Duration|2,000 hours||
|Ripple Current|Rated ripple current in specifed table||
|Voltage|The sum of DC voltage and the peak AC voltage must not exceed the rated voltage of the capacitor||
|**Performance**|**The following specifcations will be satisfed when the capacitor is tested at +20°C:**||
|Capacitance Change|≥ 400 V|Within 10% of the initial value|
|Equivalent Series Resistance|Does not exceed 150% of the initial limit||
|Leakage Current|Does not exceed leakage current limit||



## **Dimensions – Millimeters** 

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**----- Start of picture text -----**<br>
Dimensions in mm Approximate<br>Size Code D L Weight<br>−0/+1 ±2 Grams<br>**----- End of picture text -----**<br>


|**Size Code**|**Dimensions in mm**|**Dimensions in mm**|**Approximate**<br>**Weight**<br>**Grams**|
|---|---|---|---|
||**D**|**L**||
||−0/+1|±2||
|||||
|BB|25|30|28|
|BC|25|35|30|
|BD|25|40|35|
|CB|30|30|40|
|CC|30|35|45|
|CD|30|40|50|
|CE|30|45|55|
|CF|30|50|60|
|DB|35|30|50|
|DC|35|35|60|
|DD|35|40|65|
|DE|35|45|75|
|DF|35|50|80|
|EE|40|45|95|
|EF|40|50|105|
||Note: Dimensions include sleeving|||



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## **Termination Tables** 

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Termination<br>Code A D F C E<br>Diameter (mm)<br>25 • • •<br>30 • • •<br>35 • • • • •<br>40 • • • • •<br>Mounting: These capacitors are designed to be mounted by their terminations alone and<br>may be used in any position. Dummy pins must be isolated on 4 pin styles.<br>**----- End of picture text -----**<br>


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Termination  Termination  LL<br>Code Style ±1<br>Standard Termination Option<br>A 2 Pin  6.3<br>Other Termination Options<br>D 2 Pin  4.0<br>F 3 Pin  4.0<br>C 4 Pin  6.3<br>E 4 Pin  4.0<br>Dimensions in mm<br>**----- End of picture text -----**<br>


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## **Termination Tables cont.** 

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Style A/D SIDE VIEW TERMINAL PCB LAYOUT<br>END VIEW<br> L<br>D<br>10 ±0.1<br>2 ±0.1<br>LL<br>Style F SIDE VIEW TERMINAL PCB LAYOUT<br>END VIEW<br>Ø2.5 Minimum<br> L<br>+ ve<br>3.3 ±0.1<br>Ø2 ±0.1 Typical<br>D + -<br>4.75 ±0.1 10 ±0.1<br>LL<br>Style C/E SIDE VIEW TERMINAL PCB LAYOUT<br>END VIEW<br>4 Holes Ø2 ±0.1 − ve<br> L<br>on a Ø22.5 PCD<br>-<br>D<br>30° 30°<br>+<br>LL + ve<br>**----- End of picture text -----**<br>


_Black stripe denotes polarity stripe_ 

© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com 

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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **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. 

## **Re-age (Reforming) Procedure** 

Apply the rated voltage to the capacitor at room temperature for a period of one hour or until the leakage current has fallen to a steady value below the specified limit. During re-aging, a maximum charging current of twice the specified leakage current or 5 mA (whichever is greater) is suggested. 

## **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, which determine the end of life of the component. 

KEMET provides an online life calculator that can be used to predict hours of life for a given part number in specific application conditions. This can be found at: https://elc.kemet.com. 

## **End of Life Definition** 

Catastrophic failure: short circuit, open circuit or safety vent operation 

Parametric Failure: 

- Change in capacitance > ±15% 

- Leakage current > initial specified limit 

- ESR > 3 x ESR Limit 

© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com 

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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **Environmental Compliance** 

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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 • KEMET Tower • One East Broward Boulevard Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com 

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## **Table 1 – Ratings & Part Number Reference** 

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Rated  Case  ESR  Impedance<br>Size  Ripple Current<br>VDC Capacitance  Size  Maximum Maximum Part Number SPQ<br>100 Hz  Code 100 Hz  10 kHz  100 Hz 10 kHz<br>20°C (µF) D x L (mm)  105°C (A) 105°C (A) 20°C (mΩ) 20°C (mΩ)<br>400 270 CC 30 x 35 1.7 4.6 558 327 ALA8D(1)271CC400 160<br>400 360 CD 30 x 40 2.0 5.4 420 247 ALA8D(1)361CD400 160<br>400 390 DC 35 x 35 2.2 5.4 394 233 ALA8D(1)391DC400 100<br>400 430 CE 30 x 45 2.3 6.0 353 207 ALA8D(1)431CE400 160<br>400 470 CF 30 x 50 2.4 6.5 322 189 ALA8D(1)471CF400 160<br>400 470 DD 35 x 40 2.5 6.1 327 194 ALA8D(1)471DD400 100<br>400 560 DE 35 x 45 2.8 6.8 275 163 ALA8D(1)561DE400 100<br>400 620 DF 35 x 50 2.9 7.1 248 147 ALA8D(1)621DF400 100<br>400 680 EE 40 x 45 3.2 7.1 259 164 ALA8D(1)681EE400 72<br>400 820 EF 40 x 50 3.6 7.8 216 137 ALA8D(1)821EF400 36<br>450 240 CC 30 x 35 1.6 4.6 566 331 ALA8D(1)241CC450 160<br>450 300 CD 30 x 40 1.9 5.3 454 265 ALA8D(1)301CD450 160<br>450 360 CE 30 x 45 2.2 5.9 379 222 ALA8D(1)361CE450 160<br>450 360 DC 35 x 35 2.2 5.4 386 228 ALA8D(1)361DC450 100<br>450 430 CF 30 x 50 2.4 6.5 318 186 ALA8D(1)431CF450 160<br>450 430 DD 35 x 40 2.4 5.9 323 191 ALA8D(1)431DD450 100<br>450 510 DE 35 x 45 2.7 6.6 273 161 ALA8D(1)511DE450 100<br>450 560 DF 35 x 50 3.0 7.4 248 146 ALA8D(1)561DF450 100<br>450 560 EE 40 x 45 3.1 7.1 268 165 ALA8D(1)561EE450 72<br>450 680 EF 40 x 50 3.5 7.8 223 137 ALA8D(1)681EF450 36<br>500 200 CC 30 x 35 1.5 3.7 1031 760 ALA8D(1)201CC500 160<br>500 240 CD 30 x 40 1.8 4.2 859 633 ALA8D(1)241CD500 160<br>500 240 DC 35 x 35 1.8 4.3 863 637 ALA8D(1)241DC500 100<br>500 270 CE 30 x 45 1.9 4.6 764 563 ALA8D(1)271CE500 160<br>500 300 CF 30 x 50 2.0 4.8 687 506 ALA8D(1)301CF500 160<br>500 300 DD 35 x 40 2.0 4.7 692 510 ALA8D(1)301DD500 100<br>500 360 DE 35 x 45 2.4 5.5 577 426 ALA8D(1)361DE500 100<br>500 430 DF 35 x 50 2.7 6.1 484 358 ALA8D(1)431DF500 100<br>500 470 EE 40 x 45 2.9 6.3 428 312 ALA8D(1)471EE500 72<br>500 560 EF 40 x 50 3.3 7.0 360 263 ALA8D(1)561EF500 36<br>VDC Rated Capacitance Size Code Case Size Ripple Current ESR Impedance Part Number SPQ<br>**----- End of picture text -----**<br>


_(1) Termination code: See Termination Tables for available options._ 

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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **Mechanical Data** 

## **Polarity & Reversed Voltage** 

Aluminium electrolytic capacitors manufactured for 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 given off within the capacitor, usually leading to 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 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 upright or inclined to a horizontal position. Special attention should be taken for the safety vent, which ensures that internal gas generated can escape when the pressure reaches a certain value due to overstress or catastrophic failure. All mounting positions must allow the safety vent to work properly. 

## **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 base (opposing end to the terminals). This is a weakened area on the bottom of the can that is designed to relieve build-up of internal  pressure due to overstress or catastrophic failure. 

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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **Marking** 

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**----- Start of picture text -----**<br>
KEMET Logo<br>Polarity Stripe (−)<br>Rated Capacitance,  360UF -20+20% fam<br>Capacitance Tolerance<br>500vpbc = Rated Voltage (VDC)<br>Series, Capacitance<br>ALA8DA 361 De sith<br>Code, Voltage Code<br>40/105/56 ta Climatic Category<br>Date of Manufacture,<br>Batch Number 1811 18092166<br>Made in the<br>European Union<br>**----- End of picture text -----**<br>


_*Print shown is representative of the data included on the sleeve. Actual appearance can be continuous print style._ 

## **Construction** 

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**----- Start of picture text -----**<br>
Detailed Cross Section<br>Insulating End Disc Termination Pin<br>Rubber Seal<br>Anti-Vibration<br>Groove Tab Connection<br>Polarity to Terminal<br>Stripe (−)<br>Aluminum Wound Element  Margin<br>Can<br>Tab<br>o905S 4 Aluminum Can kh winniill .<br>Insulating Sleeve<br>Safety<br>Vent<br>a Gl my<br>Insulating Sleeve<br>Rubber Seal<br>_<br>Paper Spacer Impregnated<br>with Electrolyte<br>Termination Pin (−)<br>(First Layer) He<br>Cathode Aluminum Foil,<br>Etched (Second Layer)<br>Termination Pin (+)<br>Paper Spacer Impregnated  Anode Aluminum Foil, Etched,<br>with Electrolyte  Covered with Aluminum Oxide<br>(Third Layer) (Fourth Layer)<br>**----- End of picture text -----**<br>


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Snap-In Aluminum Electrolytic Capacitors – ALA8D, +105°C 

## **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 cathode foils are then interleaved with absorbent paper and wound into a cylinder. During the winding process, aluminum tabs are attached to each foil to provide the electrical contact. 

The deck, complete with terminals, is attached to the tabs and then 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 process, all materials inside the housing must be maintained at the highest purity and be compatible with the electrolyte. 

Each capacitor is aged and tested before being sleeved and packed. The purpose of aging is to repair any damage in the oxide layer and thus reduce the leakage current to a very low level. Aging is normally carried out at the rated temperature of the capacitor and is accomplished by applying voltage to the device while carefully controlling the supply current. The process may take several hours to complete. 

Damage to the oxide layer can occur due to variety of reasons: 

- Slitting of the anode foil after forming 

- Attaching the tabs to the anode foil 

- Minor mechanical damage caused during winding 

A sample from each batch is taken by the quality department after completion of the production process. This sample size is controlled by the use of recognized sampling tables defi ned in BS 6001. 

The following tests are applied and may be varied at the request of the customer. In this case the batch, or special procedure, will determine the course of action. 

## Electrical: 

Mechanical/Visual: 

- Leakage current 

   - Overall dimensions 

   - Torque test of mounting stud 

- Capacitance 

   - Print detail 

- ESR 

- Impedance 

   - Box labels 

- Tan Delta 

- Packaging, including packed quantity 

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**----- Start of picture text -----**<br>
Extended cathode<br>Anode foil<br>Foil tabs<br>Tissues<br>Cathode foil<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
Etching<br>Forming<br>Winding<br>Decking<br>Impregnation<br>Assembly<br>Aging<br>Testing<br>Sleeving<br>Packing<br>**----- End of picture text -----**<br>


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## 

## **Disclaimer** 

All product specifi cations, 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 specifi cally disclaims – any warranty concerning suitability for a specifi c 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 indicted or that other measures may not be required. 

_KEMET is a registered trademark of KEMET Electronics Corporation._ 

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