Solid Polymer Aluminum Capacitor

© KEMET Electronics. All Rights Reserv ed.

Ele

ctr

oly

tic

Pro

du

ct

Po

rtfo

lio

Axial/Radial

Screw TerminalRadial / Single Ended

SMD

Conductive Polymer

Radial

Conductive Polymer

SMDSnap-In

Press-Fit

Varistor

Relay

2

Capacitance Voltage Temperature Life

Up to 2700μF Up to 250V -55⁰C to 125⁰C Up to 5000h

Solid Polymer Aluminum Capacitors

Industries

• Consumer

• Telecommunications

• Computer

• Industrial

• Medical

• Automotive

Applications

• Automotive

• Computer

• Telecom

• Industrial

• Gaming

Features & Benefits

• Leaded and surface mount form factor

• High ripple current

• Longer life

• Stable characteristics

• Ultra low impedance

• Halogen-Free

3

Solid Polymer Aluminum Applications

Automotive:ADAS, Infotainment, Power Steering, Body Control Module, Adaptive Headlights, Back-up Camera, Airbag, Keyless Entry, Instrument Cluster, USB Charger, Onboard Charger, Traction

Inverter, Power Train (TCU, ECU, Fan Control, Pump Control, DC/DC Converter), LED Driver

Computer:Server, PC, Notebook, Charger, Embedded Systems, Bitcoin

Telecom:5G, Base Station Antenna, Infrastructure Switching Gear

Industrial: Security Cameras, Programming Controls, Power Supplies, Switch Power Supplies, Industrial

Control systems, Lighting, LED Backlight Monitor

Gaming:Xbox, PlayStation, Nintendo, Slot Machines, Pachinko

DC with AC Ripple

4

Aluminum Block Diagram“Wet” vs Polymer

Aluminum Electrolytic

Cathode Foil

Wet ElectrolyteOxide Layer

Anode Foil

Separator

Paper

Oxide

Layer

Cathode Foil

Conductive Solid

Polymer

(PEDOT)

Oxide Layer

Anode Foil

Separator

Paper

Oxide

Layer

Solid Polymer Aluminum

5

Aluminum Can

Terminal Tabs

Rubber Seal

Lead (+)

Lead (-)

Cathode Aluminum

Foil, Etched

(Fourth Layer)

Anode Aluminum Foil, Etched,

Covered with Aluminum Oxide

(Second Layer)

Paper Spacer with Solid

Polymer Electrolyte

(First Layer)

Paper Spacer with Solid

Polymer Electrolyte

(Third Layer)

Detailed Cross Section

Lead

Terminal Tab

Margin

Aluminum Can

Rubber Seal

A75 & A76 Construction

6

Why Choose Polymers?

➢ Less heat generated during operations compared

to standard Electrolytic Capacitors (Wet Caps)

➢ Highly conductive polymer cathode system

➢ Lower ESR & higher ripple capability

➢ Greater stability & longer life

➢ No electrolyte leakage leading to circuit board

contamination

➢ No ignition

7

Advantages of Polymers

Limited space and height

Stable capacitance and energy

Long lifetime at high

temperatures

High safety and reliability

needed

No wet electrolyte to

dry up 8

Advantages of Polymer

* Theoretical Life Calculation up to 105°C for A750 / A755 / A758 / A765 / A767

For the same 20°C decrease, the life expectancy of an aluminium electrolytic increases by a

factor of 4, while an aluminium polymer capacitor increases by a factor of 10*

- 50,000 100,000 150,000 200,000

105

100

95

90

85

80

75

70

65

Capacitor Life [H]

Tem

per

atu

re [°

C]

Aluminum Electrolytic Solid Polymer Aluminum

Lcalc.= Lopr× 10To−Tamb

20

Lcalc.=Lopr× 2T0−Tamb

10

9

Advantages of Polymer

233mΩ

254Ω

Not only does the Aluminum Polymer have much lower ESR than the Aluminum Electrolytic, but

also it’s variation over temperature is three orders of magnitude smaller. 10

Advantages of Polymer

In most instances, the Conductive Polymer Z and ESR are an order of magnitude lower than

the traditional Aluminum Electrolytic.

0.01

0.1

1

10

100

0 10K 100K 1M 10M

ES

R

Frequency (Hz)

Stable ESR values across Frequency

Aluminum Electrolytic Conductive Polymer Electrolytic

11

Advantages of Polymer

0

0.5

1

1.5

2

2.5

3

3.5

4

33µF/16V 47µF/16V 100µF/10V 220µF/10V

Rip

ple

Curr

ent

(Arm

s)

Allowable Ripple Current (100kHz 105°C)

Aluminum Electrolytic Conductive Polymer Electrolytic

Due to the lower ESR of the Conductive Polymer, Polymer capacitors are capable of

withstanding significantly higher ripple current than traditional Aluminum Electrolytic capacitors. 12

Product Series & Offerings

Single Ended Polymer on the web

SMD Polymers on the web

A750 A755 A758 A759

47 – 2200 µF 47 – 1500 µF 10 – 1200 µF 2.2 – 2200 µF

2.5 – 63 VDC 2.5 – 25VDC 2.5 – 25 VDC 6.3 – 250 VDC

-55°C to 105°C -55°C to 105°C -55°C to 105°C -55°C to 125°C

2,000 hours 5,000 hours 5,000 hours 2,000 hours

Through Hole Through Hole Through Hole Through Hole

Low Impedance Low Impedance Miniature Low Impedance

High Ripple Current High Ripple Current Low Impedance High Voltage

RoHS Compliant Long Life High Ripple Current High Ripple Current

RoHS Compliant Long Life High Temperature

RoHS Compliant RoHS Compliant

Highest Voltage on the Market!

A765 A767 A766 A768

10 – 2700 µF 18 – 220 µF 10 – 560 µF 18 – 1000 µF

2.5 – 25 VDC 35 – 100 VDC 4 – 25 VDC 16 – 80 VDC

-55°C to 105°C -55°C to 105°C -55°C to 105°C -55°C to 125°C

2,000 hours 2,000 hours 5,000 hours 2,000 hours

Surface Mount Surface Mount Surface Mount Surface Mount

Miniature Ultra Low Impedance Low Impedance Low Impedance

Ultra Low Impedance High Ripple Current High Ripple Current High Ripple Current

High Ripple Current High Voltage Long Life High Voltage

RoHS Compliant RoHS Compliant RoHS Compliant High Temperature

RoHS Compliant

High Temperature Series

13

How to Read a Polymer Part Number

A 750 EK 567 M 0E AA E 020

Capacitor

ClassSeries Size Code Capacitance Code (pF) Tolerance

Rated

Voltage

(VDC)

PackagingElectrical

ParametersESR

A = Aluminum Radial Conductive

Polymer Solid

Capacitor105°C

2000 Hour

See Dimension

Table

First two digits represent

significant figures for capacitance

values. Last digit specifies the number of zeros to be added.

M = ±20% 2.5 = 0E

4 = 0G

6.3 = 0J10 = 1A

16 = 1C

25 = 1E

35 = 1V

50 = 1H63 = 1J

See Ordering

Options Table E = Standard/ESRS = Automotive

AEC-Q200

available on

≥ 25 V

Last 3 digits

represent significant

figures for ESR values.

(mΩ)

Example: A750EK567M0EAAE020

14

Comparison of Aluminum Capacitors

©KEMET Corporation. All Rights Reserv ed.

Cathode

SystemPrice

Frequency

Characteristics

Temperature

Range

Temperature

Characteristics

Ripple

Current

Leakage

CurrentLife

High Reliability

ApplicationsAEC-Q200

Traditional

Electrolytic

Solid

Polymer

Aluminum

Hybrid

Aluminum

Low Fair Good Best

15

© KEMET Electronics. All Rights Reserv ed.

• AEC-Q200 Qualification

• Solids

• Available on A768 series ≤63V

• Available on request (≥25V) by PN

• More series to be targeted

• Hybrids

• All series

• Anti-Vibration

• Under planning (CY20 / 2nd half)

• SMD and Radial Hybrids

• Target CY20 / 2nd half

KEMET Confidential

What is Next?

16

Thank you!

Please submit additional questions at:

https://go.kemet.com/contact-us

Austin FinleyAssociate Technical Product Manager

KEMET Electronics Corporation

austinfinley@kemet.com

2835 KEMET Way

Simpsonville, SC 29681