T591 +125°C 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. KEMET T591 Polymer Automotive Capacitors 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 (CAD) 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 6.3V 47uF 1311 20% ESR=70mOhms AEC-Q200
Datasheet
4,150In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

47 uF 6.3 VDC SMD/SMT 20 % 1311 70 mOhms 29.6 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 20V 68uF 2917 20% ESR=40mOhms AEC-Q200
Datasheet
2,454In Stock
500Expected 2026-05-28
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

68 uF 20 VDC SMD/SMT 20 % 2917 40 mOhms 136 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 35V 33uF 2917 20% ESR=65mOhms AEC-Q200
Datasheet
2,486In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

33 uF 35 VDC SMD/SMT 20 % 2917 65 mOhms 115.5 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 25Volt 47uF 2912 20% ESR=60mOhms AEC-Q200
Datasheet
1,258In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

47 uF 25 VDC SMD/SMT 20 % 2917 60 mOhms 117.5 uA - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 100uF 1380 20% ESR=45mOhms AEC-Q200
Datasheet
9,280In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

100 uF 6.3 VDC SMD/SMT 20 % 1311 45 mOhms 63 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 220uF 1311 20% ESR=70mOhms AEC-Q200
Datasheet
3,569In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

220 uF 6.3 VDC SMD/SMT 20 % 1311 70 mOhms 138.6 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 10V 470uF 20% 25mOhms -55C/+125C AEC-Q200
Datasheet
162In Stock
1,000Expected 2026-05-05
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 6.3V 68uF 1311 20% ESR=70mOhms AEC-Q200
Datasheet
220In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

68 uF 6.3 VDC SMD/SMT 20 % 2917 70 mOhms 42.8 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 10V 220uF 2917 20% ESR=25mOhms AEC-Q200
Datasheet
107In Stock
1,500Expected 2026-04-23
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

220 uF 10 VDC SMD/SMT 20 % 2917 25 mOhms 220 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 150uF 2917 20% ESR=25mOhms AEC-Q200
Datasheet
408In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

150 uF 6.3 VDC SMD/SMT 20 % 2917 25 mOhms 94.5 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
131In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 35V 4.7uF 1311 20% ESR=200mOhm AEC-Q200
Datasheet
2,744In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

4.7 uF 35 VDC SMD/SMT 20 % 1311 200 mOhms 16.5 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5V 330uF 2917 20% ESR=15mOhms AEC-Q200
Datasheet
1,378In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

330 uF 2.5 VDC SMD/SMT 20 % 2917 15 mOhms 82.5 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 50V 2.2uF 3528 20% ESR=150mOhms AEC-Q200
Datasheet
3,083In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

2.2 uF 50 VDC SMD/SMT 20 % 1311 150 mOhms 11 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5V 330uF 2917 20% ESR=12mOhms AEC-Q200
Datasheet
923In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 1,000

330 uF 2.5 VDC SMD/SMT 20 % 2917 12 mOhms 82.5 uA 1.9 mm - 55 C + 125 C 7343 V Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5VDC 220uF 7343 20% ESR=0.012Ohms
Datasheet
485In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

220 uF 2.5 VDC SMD/SMT 20 % 2917 100 Ohms 55 mA 2.8 mm - 55 C + 125 C 7343 D Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5VDC 330uF 7343 20% ESR=0.009Ohms
Datasheet
250In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

330 uF 2.5 VDC SMD/SMT 20 % 2917 9 mOhms 82.5 mA 2.8 mm - 55 C + 125 C 7343 D Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5VDC 330uF 7343 20% ESR=0.012Ohms
Datasheet
400In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

330 uF 2.5 VDC SMD/SMT 20 % 2917 100 Ohms 82.5 mA 2.8 mm - 55 C + 125 C 7343 D Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5V 680uF 20% 7343-31 -55 /+125C ESR=6mOhms
Datasheet
827In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

680 uF 2.5 VDC SMD/SMT 20 % 2917 6 mOhms 170 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 2.5V 680uF 20% 9mOhms -55C/+125C AEC-Q200
Datasheet
990In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

680 uF 2.5 VDC SMD/SMT 20 % 2815 9 mOhms 170 uA 2.8 mm - 55 C + 125 C 7343 D Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 470uF 20% 25mOhms -55C/+125C AEC-Q200
Datasheet
972In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 500

470 uF 6 VDC SMD/SMT 20 % 2815 25 mOhms 282 uA 4 mm - 55 C + 125 C 7343 X Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 4V 100uF 2917 20% ESR=70mOhms AEC-Q200
Datasheet
1,955In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

100 uF 4 VDC SMD/SMT 20 % 1311 70 mOhms 40 uA 1.9 mm - 55 C + 105 C 3528 B Case T591 AEC-Q200 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 100uF 1311 20% ESR=70mOhms AEC-Q200
Datasheet
1,882In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

100 uF 6.3 VDC SMD/SMT 20 % 1311 70 mOhms 63 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 6.3V 150uF 1311 20% ESR=70mOhms
Datasheet
695In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

150 uF 6.3 VDC SMD/SMT 20 % 1311 70 mOhms 94.5 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 Reel, Cut Tape, MouseReel
KEMET Tantalum Capacitors - Polymer 50V 2.2uF 3528 20% ESR=200mOhms AEC-Q200
Datasheet
2,255In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

2.2 uF 50 VDC SMD/SMT 20 % 1311 200 mOhms 11 uA 1.9 mm - 55 C + 125 C 3528 B Case T591 Reel, Cut Tape, MouseReel