Tantalum Capacitors - Polymer

.hide-partial { max-height: none; } .show-more { display: none; }

T591 Polymer Automotive Capacitors

KEMET T591 Polymer Automotive Capacitors are designed to deliver higher stability under harsh conditions of humidity and temperature. The series features polymer cathode technology for ultra-low ESR and improved capacitance retention at high frequency. The solid capacitor construction results in long and stable life time performance as required by automotive applications. These devices comply with nearly all of the requirements of the AEC-Q200 standard and are specially designed for DC/DC converters in automotive applications, where harsh conditions (high humidity and temperature) are a concern.
Learn More

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Results: 105

Applied Filters:

Capacitance

Voltage Rating DC

Termination Style

Tolerance

Case Code - in

ESR

Leakage Current

Height

Maximum Operating Temperature

Case Code - mm

Mfr Case Code

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Part #

Tantalum Capacitors - Polymer 2.5V 470uF 2870 20% ESR=6mOhms AEC-Q200

T591D477M2R5ATE006
KEMET
1: $2.39
4,993On Order

Mfr. Part No.
T591D477M2R5ATE006

Mouser Part No
80-T591D477M2R5ATE06

KEMET

Tantalum Capacitors - Polymer 2.5V 470uF 2870 20% ESR=6mOhms AEC-Q200

Learn More

Datasheet

4,993On Order

Cut Tape

$2.39

$1.69

$1.44

$1.26

Reel

$1.10

MouseReel Available

Min.: 1
Mult.: 1
Max.: 1,000

: 500

470 uF

2.5 VDC

SMD/SMT

20 %

2917

6 mOhms

117.5 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 10uF 2917 20% ESR=120mOhm AEC-Q200

T591V106M035ATE120
KEMET
1: $2.42
1,914Expected 28/01/2027

Mfr. Part No.
T591V106M035ATE120

Mouser Part No
80-T591V106M35ATE120

KEMET

Tantalum Capacitors - Polymer 35V 10uF 2917 20% ESR=120mOhm AEC-Q200

Learn More

Datasheet

1,914Expected 28/01/2027

Cut Tape

$2.42

$1.71

$1.46

$1.29

$0.978

Reel

$0.931

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

10 uF

35 VDC

SMD/SMT

20 %

2917

120 mOhms

35 uA

1.9 mm

- 55 C

+ 125 C

7343

V Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 4V 220uF 7343 ESR=9mOhms Harsh Env

T591V227M004ATE009
KEMET
1: $2.83
2,000Expected 20/08/2026
New Product

Mfr. Part No.
T591V227M004ATE009

Mouser Part No
80-T591V227M04ATE009

New Product

KEMET

Tantalum Capacitors - Polymer 4V 220uF 7343 ESR=9mOhms Harsh Env

Learn More

Datasheet

2,000Expected 20/08/2026

Cut Tape

$2.83

$2.02

$1.74

$1.53

$1.36

Reel

$1.10

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,000

: 1,000

220 uF

4 VDC

SMD/SMT

20 %

2917

9 mOhms

88 uA

1.9 mm

- 55 C

+ 125 C

7343

V Coded

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 10V 330uF 7343 ESR=25mOhms Harsh Env

T591X337M010ATE025
KEMET
1: $4.75
1,000Expected 01/02/2027
New Product

Mfr. Part No.
T591X337M010ATE025

Mouser Part No
80-T591X337M10ATE025

New Product

KEMET

Tantalum Capacitors - Polymer 10V 330uF 7343 ESR=25mOhms Harsh Env

Learn More

Datasheet

1,000Expected 01/02/2027

Cut Tape

$4.75

$3.42

$2.97

$2.62

Reel

$2.27

MouseReel Available

Min.: 1
Mult.: 1

: 500

330 uF

10 VDC

SMD/SMT

20 %

2917

25 mOhms

330 uA

4 mm

- 55 C

+ 125 C

7343

X Coded

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 10V 470uF 20% 25mOhms -55C/+125C AEC-Q200

T591X477M010ATE025
KEMET
1: $3.72
3,000On Order

Mfr. Part No.
T591X477M010ATE025

Mouser Part No
80-T591X477M010ATE25

KEMET

Tantalum Capacitors - Polymer 10V 470uF 20% 25mOhms -55C/+125C AEC-Q200

Learn More

Datasheet

3,000On Order

Cut Tape

$3.72

$2.75

$2.41

$2.05

Reel

$1.72

MouseReel Available

Min.: 1
Mult.: 1

: 500

470 uF

10 VDC

SMD/SMT

20 %

2815

25 mOhms

470 uA

4 mm

- 55 C

+ 125 C

7343

X Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 10V 47uF 1311 20% ESR=70mOhms AEC-Q200

T591B476M010ATE070
KEMET
1: $1.32
2,000Expected 17/11/2026

Mfr. Part No.
T591B476M010ATE070

Mouser Part No
80-T591B476M010E70

KEMET

Tantalum Capacitors - Polymer 10V 47uF 1311 20% ESR=70mOhms AEC-Q200

Learn More

Datasheet

2,000Expected 17/11/2026

Cut Tape

$1.32

$0.68

$0.624

$0.529

$0.50

Reel

$0.445

MouseReel Available

Min.: 1
Mult.: 1
Max.: 4,000

: 2,000

47 uF

10 VDC

SMD/SMT

20 %

1311

70 mOhms

47 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=60mOhms AEC-Q200

T591D226M025ATE060
KEMET
1: $2.22
500Expected 20/01/2027

Mfr. Part No.
T591D226M025ATE060

Mouser Part No
80-T591D226M025ATE60

KEMET

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=60mOhms AEC-Q200

Learn More

Datasheet

500Expected 20/01/2027

Cut Tape

$2.22

$1.51

$1.22

$1.14

Reel

$0.983

MouseReel Available

Min.: 1
Mult.: 1

: 500

22 uF

25 VDC

SMD/SMT

20 %

2917

60 mOhms

55 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 6.3V 330uF 2917 20% ESR=80mOhms AEC-Q200

T591D337M006ATE080
KEMET
1: $1.55
489Expected 08/12/2026

Mfr. Part No.
T591D337M006ATE080

Mouser Part No
80-T591D337M006ATE80

KEMET

Tantalum Capacitors - Polymer 6.3V 330uF 2917 20% ESR=80mOhms AEC-Q200

Learn More

Datasheet

489Expected 08/12/2026

Cut Tape

$1.55

$0.813

$0.749

Reel

$0.639

MouseReel Available

Min.: 1
Mult.: 1

: 500

330 uF

6.3 VDC

SMD/SMT

20 %

2917

80 mOhms

207.9 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 20V 68uF 2917 20% ESR=50mOhms AEC-Q200

T591D686M020ATE050
KEMET
1: $2.39
1,000Expected 28/09/2026

Mfr. Part No.
T591D686M020ATE050

Mouser Part No
80-T591D686M020ATE50

KEMET

Tantalum Capacitors - Polymer 20V 68uF 2917 20% ESR=50mOhms AEC-Q200

Learn More

Datasheet

1,000Expected 28/09/2026

Cut Tape

$2.39

$1.63

$1.33

$1.24

Reel

$1.07

View

MouseReel Available

Min.: 1
Mult.: 1

: 500

68 uF

20 VDC

SMD/SMT

20 %

2917

50 mOhms

136 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 4V 220uF 7343-20 12mOhms 20% Harsh Env

T591V227M004ATE012
KEMET
1: $2.83
1,000Expected 24/09/2026
New Product

Mfr. Part No.
T591V227M004ATE012

Mouser Part No
80-T591V227M004ATE12

New Product

KEMET

Tantalum Capacitors - Polymer 4V 220uF 7343-20 12mOhms 20% Harsh Env

Learn More

Datasheet

1,000Expected 24/09/2026

Cut Tape

$2.83

$2.05

Reel

$2.04

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,000

: 1,000

220 uF

2.68 VDC, 4 VDC

SMD/SMT

20 %

2815

12 mOhms

88 uA

1.9 mm

- 55 C

+ 125 C

7343

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env

T591V337M2R5ATE009
KEMET
1: $3.33
1,000Expected 20/10/2026
New Product

Mfr. Part No.
T591V337M2R5ATE009

Mouser Part No
80-T591V337M2R5ATE09

New Product

KEMET

Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env

Learn More

Datasheet

1,000Expected 20/10/2026

Cut Tape

$3.33

$2.47

$2.44

Reel

$2.43

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,000

: 1,000

330 uF

1.68 VDC, 2.5 VDC

SMD/SMT

20 %

2815

15 mOhms

82.5 uA

1.9 mm

- 55 C

+ 125 C

7343

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env

T591V337M2R5ATE015
KEMET
1: $3.33
1,000Expected 20/10/2026
New Product

Mfr. Part No.
T591V337M2R5ATE015

Mouser Part No
80-T591V337M2R5ATE15

New Product

KEMET

Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env

Learn More

Datasheet

1,000Expected 20/10/2026

Cut Tape

$3.33

$2.47

$2.44

Reel

$2.43

MouseReel Available

Min.: 1
Mult.: 1
Max.: 2,000

: 1,000

330 uF

1.68 VDC, 2.5 VDC

SMD/SMT

20 %

2815

15 mOhms

82.5 uA

1.9 mm

- 55 C

+ 125 C

7343

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=45mOhms AEC-Q200

T591B107M004ATE045
KEMET
2,000: $0.423
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B107M004ATE045

Mouser Part No
80-T591B107M004ATE45

KEMET

Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=45mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.423

Min.: 2,000
Mult.: 2,000

: 2,000

100 uF

4 VDC

SMD/SMT

20 %

1311

45 mOhms

40 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=55mOhms AEC-Q200

T591B107M004ATE055
KEMET
2,000: $0.423
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B107M004ATE055

Mouser Part No
80-T591B107M004ATE55

KEMET

Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=55mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.423

Min.: 2,000
Mult.: 2,000

: 2,000

100 uF

4 VDC

SMD/SMT

20 %

1311

55 mOhms

40 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 6.3V 100uF 1380 20% ESR=55mOhms AEC-Q200

T591B107M006ATE055
KEMET
2,000: $0.423
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B107M006ATE055

Mouser Part No
80-T591B107M006ATE55

KEMET

Tantalum Capacitors - Polymer 6.3V 100uF 1380 20% ESR=55mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.423

Min.: 2,000
Mult.: 2,000

: 2,000

100 uF

6.3 VDC

SMD/SMT

20 %

1311

55 mOhms

63 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 6.3V 100uF 1311 20% ESR=280mOhms

T591B107M006ATE0707280
KEMET
8,000: $0.396
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B107M006ATE0707280

Mouser Part No
80-T591B107M6ATE70LR

KEMET

Tantalum Capacitors - Polymer 6.3V 100uF 1311 20% ESR=280mOhms

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.396

$0.384

Min.: 8,000
Mult.: 8,000

: 8,000

100 uF

6.3 VDC

SMD/SMT

20 %

1311

280 mOhms

63 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

Reel

Tantalum Capacitors - Polymer 50V 1.5 uF 3528 10% ESR=200mOhms

T591B155K050ATE200
KEMET
2,000: $0.438
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B155K050ATE200

Mouser Part No
80-T591B155K50ATE200

KEMET

Tantalum Capacitors - Polymer 50V 1.5 uF 3528 10% ESR=200mOhms

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.438

Min.: 2,000
Mult.: 2,000

: 2,000

1.5 uF

50 VDC

SMD/SMT

10 %

1311

200 mOhms

75 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

Reel

Tantalum Capacitors - Polymer 50V 1.5 uF 3528 20% ESR=200mOhms

T591B155M050ATE200
KEMET
2,000: $0.409
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B155M050ATE200

Mouser Part No
80-T591B155M50ATE200

KEMET

Tantalum Capacitors - Polymer 50V 1.5 uF 3528 20% ESR=200mOhms

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.409

Min.: 2,000
Mult.: 2,000

: 2,000

1.5 uF

50 VDC

SMD/SMT

20 %

1311

200 mOhms

75 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

Reel

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=45mOhms AEC-Q200

T591B157M004ATE045
KEMET
2,000: $0.438
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B157M004ATE045

Mouser Part No
80-T591B157M004ATE45

KEMET

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=45mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.438

$0.435

Min.: 2,000
Mult.: 2,000

: 2,000

150 uF

4 VDC

SMD/SMT

20 %

1311

45 mOhms

60 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=55mOhms AEC-Q200

T591B157M004ATE055
KEMET
2,000: $0.438
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B157M004ATE055

Mouser Part No
80-T591B157M004ATE55

KEMET

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=55mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.438

Min.: 2,000
Mult.: 2,000

: 2,000

150 uF

4 VDC

SMD/SMT

20 %

1311

55 mOhms

60 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=70mOhms AEC-Q200

T591B157M004ATE070
KEMET
2,000: $0.409
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B157M004ATE070

Mouser Part No
80-T591B157M004ATE70

KEMET

Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=70mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.409

Min.: 2,000
Mult.: 2,000

: 2,000

150 uF

4 VDC

SMD/SMT

20 %

1311

70 mOhms

60 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 6.3V 150uF 1380 20% ESR=55mOhms AEC-Q200

T591B157M006ATE055
KEMET
2,000: $0.452
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B157M006ATE055

Mouser Part No
80-T591B157M006ATE55

KEMET

Tantalum Capacitors - Polymer 6.3V 150uF 1380 20% ESR=55mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Reel

$0.452

$0.449

Min.: 2,000
Mult.: 2,000

: 2,000

150 uF

6.3 VDC

SMD/SMT

20 %

1311

55 mOhms

94.5 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel

Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=150mOhms

T591B225M035ATE150
KEMET
1: $0.79
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B225M035ATE150

Mouser Part No
80-T591B225M35ATE150

KEMET

Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=150mOhms

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Cut Tape

$0.79

$0.576

$0.457

$0.402

$0.379

Reel

$0.322

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

2.2 uF

35 VDC

SMD/SMT

20 %

1311

150 mOhms

7.7 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=200mOhms

T591B225M035ATE200
KEMET
1: $0.76
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B225M035ATE200

Mouser Part No
80-T591B225M35ATE200

KEMET

Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=200mOhms

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Cut Tape

$0.76

$0.546

$0.429

$0.376

$0.356

Reel

$0.293

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

2.2 uF

35 VDC

SMD/SMT

20 %

1311

200 mOhms

7.7 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 6.3V 22uF 1380 20% ESR=70mOhms AEC-Q200

T591B226M006ATE070
KEMET
1: $0.93
Non-Stocked Lead-Time 25 Weeks

Mfr. Part No.
T591B226M006ATE070

Mouser Part No
80-T591B226M006ATE70

KEMET

Tantalum Capacitors - Polymer 6.3V 22uF 1380 20% ESR=70mOhms AEC-Q200

Learn More

Datasheet

Non-Stocked Lead-Time 25 Weeks

Cut Tape

$0.93

$0.682

$0.544

$0.481

$0.456

Reel

$0.366

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

22 uF

6.3 VDC

SMD/SMT

20 %

1311

70 mOhms

13.9 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T591

AEC-Q200

Reel, Cut Tape, MouseReel

T591 Polymer Automotive Capacitors

Customer Service Office

Company

Resources

Support

6 mOhms
9 mOhms
12 mOhms
15 mOhms
18 mOhms
25 mOhms
35 mOhms
40 mOhms
45 mOhms
50 mOhms
55 mOhms
60 mOhms
65 mOhms
70 mOhms
75 mOhms
80 mOhms
90 mOhms
120 mOhms
150 mOhms
200 mOhms

7.7 uA
11 uA
11.6 uA
13.9 uA
16.5 uA
18.8 uA
20.8 uA
22 uA
29.6 uA
33 uA
35 uA
35.3 uA
40 uA
42.8 uA
47 uA
50 uA
55 uA
60 uA
63 uA
75 uA