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.
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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Capacitance
Voltage Rating DC
Termination Style
Tolerance
Case Code - in
ESR
Leakage Current
Height
Minimum Operating Temperature
Maximum Operating Temperature
Case Code - mm
Mfr Case Code
Series
Qualification
Packaging
KEMET Tantalum Capacitors - Polymer 2.5V 470uF 2870 20% ESR=6mOhms AEC-Q200
Datasheet
4.993On Order
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
KEMET Tantalum Capacitors - Polymer 35V 10uF 2917 20% ESR=120mOhm AEC-Q200
Datasheet
1.914Expected 26/11/2026
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
KEMET Tantalum Capacitors - Polymer 4V 220uF 7343 ESR=9mOhms Harsh Env
Datasheet
2.000Expected 20/08/2026
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
KEMET Tantalum Capacitors - Polymer 10V 330uF 7343 ESR=25mOhms Harsh Env
Datasheet
1.000Expected 01/02/2027
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
KEMET Tantalum Capacitors - Polymer 10V 470uF 20% 25mOhms -55C/+125C AEC-Q200
Datasheet
3.000On Order
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
KEMET Tantalum Capacitors - Polymer 10V 47uF 1311 20% ESR=70mOhms AEC-Q200
Datasheet
2.000Expected 17/11/2026
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
KEMET Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=60mOhms AEC-Q200
Datasheet
500Expected 20/01/2027
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
KEMET Tantalum Capacitors - Polymer 6.3V 330uF 2917 20% ESR=80mOhms AEC-Q200
Datasheet
489Expected 08/12/2026
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
KEMET Tantalum Capacitors - Polymer 20V 68uF 2917 20% ESR=50mOhms AEC-Q200
Datasheet
1.000Expected 28/09/2026
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
KEMET Tantalum Capacitors - Polymer 4V 220uF 7343-20 12mOhms 20% Harsh Env
Datasheet
1.000Expected 24/09/2026
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
KEMET Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env
Datasheet
1.000Expected 20/10/2026
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
KEMET Tantalum Capacitors - Polymer 2.5V 330uF 7343-20 15mOhms 20% Harsh Env
Datasheet
1.000Expected 20/10/2026
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
KEMET Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=45mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 4VDC 100uF 1380 20% ESR=55mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 6.3V 100uF 1380 20% ESR=55mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 6.3V 100uF 1311 20% ESR=280mOhms
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 50V 1.5 uF 3528 10% ESR=200mOhms
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 50V 1.5 uF 3528 20% ESR=200mOhms
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=45mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=55mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 4VDC 150uF 1380 20% ESR=70mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 6.3V 150uF 1380 20% ESR=55mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=150mOhms
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 35V 2.2uF 3528 20% ESR=200mOhms
Datasheet
Non-Stocked Lead-Time 25 Weeks
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
KEMET Tantalum Capacitors - Polymer 6.3V 22uF 1380 20% ESR=70mOhms AEC-Q200
Datasheet
Non-Stocked Lead-Time 25 Weeks
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