Tantalum Capacitors - Polymer

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

T521 High Voltage Polymer Tantalum Capacitors

KEMET T521 KO-CAP^® High Voltage Organic Polymer Tantalum Capacitors feature voltage ratings up to 75V and capacitance values up to 470µF, high ripple current capability, safe failure mode, and low ESR. These T521 capacitors are volumetrically efficient and have stable temperature characteristics. They are lead-free when ordered with 100% Sn termination finish, RoHS compliant, and halogen-free. These components are designed for DC-DC converters, power supply inputs, and higher application voltages such as 12V, 24V, 28V, and 48V input rails. The T521 KO-CAP Series features a Ta anode and Ta₂O₅ dielectric as well as a conductive organic polymer that replaces the traditionally used MnO₂ as the cathode plate of the capacitor. This results in very low ESR and improved capacitance retention at high frequency.

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

Results: 273

Applied Filters:

Capacitance

Voltage Rating DC

Termination Style

Case Code - in

ESR

Leakage Current

Height

Minimum Operating Temperature

Maximum Operating Temperature

Case Code - mm

Mfr Case Code

Series

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 20V 150uF 2917 20% ESR=50mOhms

T521D157M020ATE050
KEMET
1: S/20.05
5,817In Stock
4,000Expected 4/29/2027

Mfr. Part #
T521D157M020ATE050

Mouser Part #
80-T521D157M020ATE50

KEMET

Tantalum Capacitors - Polymer 20V 150uF 2917 20% ESR=50mOhms

Learn More

Datasheet

5,817In Stock

4,000Expected 4/29/2027

Cut Tape

S/20.05

S/14.52

S/12.30

S/11.60

Reel

S/10.39

MouseReel Available

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

: 500

150 uF

20 VDC

SMD/SMT

20 %

2917

50 mOhms

300 uA

2.8 mm

- 55 C

+ 105 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 22uF 1311 20% ESR=100mOhms

T521B226M025ATE1007280
KEMET
1: S/5.22
29,881In Stock

Mfr. Part #
T521B226M025ATE1007280

Mouser Part #
80-T521B226M25E100LR

KEMET

Tantalum Capacitors - Polymer 25V 22uF 1311 20% ESR=100mOhms

Learn More

Datasheet

29,881In Stock

Cut Tape

S/5.22

S/3.61

S/2.66

S/2.23

View

Reel

S/1.83

MouseReel Available

Min.: 1
Mult.: 1
Max.: 16,000

: 8,000

22 uF

25 VDC

SMD/SMT

20 %

1411

100 mOhms

55 uA

2.1 mm

- 55 C

+ 105 C

3528

B Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=40mOhms

T521V336M025ATE040
KEMET
1: S/10.86
4,140In Stock

Mfr. Part #
T521V336M025ATE040

Mouser Part #
80-T521V336M25ATE40

KEMET

Tantalum Capacitors - Polymer 25V 33uF 2917 20% ESR=40mOhms

Learn More

Datasheet

4,140In Stock

Cut Tape

S/10.86

S/7.51

S/6.15

S/5.76

S/5.06

Reel

S/4.71

MouseReel Available

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

: 1,000

33 uF

25 VDC

SMD/SMT

20 %

2917

40 mOhms

82.5 uA

1.8 mm

- 55 C

+ 105 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 50V 6.8uF 2917 20% ESR=70mOhms

T521V685M050ATE070
KEMET
1: S/15.80
1,276In Stock

Mfr. Part #
T521V685M050ATE070

Mouser Part #
80-T521V685M50ATE70

KEMET

Tantalum Capacitors - Polymer 50V 6.8uF 2917 20% ESR=70mOhms

Learn More

Datasheet

1,276In Stock

Cut Tape

S/15.80

S/11.33

S/9.50

S/8.95

S/7.98

Reel

S/7.71

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

6.8 uF

50 VDC

SMD/SMT

20 %

2917

70 mOhms

34 uA

1.8 mm

- 55 C

+ 125 C

7343

V Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 16V 220uF 20% ESR=50mOhms

T521X227M016ATE0507280
KEMET
1: S/19.23
2,212In Stock

Mfr. Part #
T521X227M016ATE0507280

Mouser Part #
80-T521X227M16ATE050

KEMET

Tantalum Capacitors - Polymer 16V 220uF 20% ESR=50mOhms

Learn More

Datasheet

2,212In Stock

Cut Tape

S/19.23

S/13.86

S/11.99

S/10.59

View

Reel

S/8.33

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

220 uF

16 VDC

SMD/SMT

20 %

2917

50 mOhms

352 uA

4 mm

- 55 C

+ 125 C

7343

X Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=120mOhms

T521D106M050ATE120
KEMET
1: S/10.24
5,388In Stock

Mfr. Part #
T521D106M050ATE120

Mouser Part #
80-T521D106M50ATE120

KEMET

Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=120mOhms

Learn More

Datasheet

5,388In Stock

Cut Tape

S/10.24

S/7.05

S/5.76

S/5.37

Reel

S/4.67

MouseReel Available

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

: 500

10 uF

50 VDC

SMD/SMT

20 %

2917

120 mOhms

50 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=90mOhms

T521V106M050ANE090
KEMET
1: S/32.97
975In Stock

Mfr. Part #
T521V106M050ANE090

Mouser Part #
80-T521V106M50ANE90

KEMET

Tantalum Capacitors - Polymer 50V 10uF 2917 20% ESR=90mOhms

Learn More

Datasheet

975In Stock

Cut Tape

S/32.97

S/24.52

S/21.56

S/19.27

S/17.75

Reel

S/15.88

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

10 uF

50 VDC

SMD/SMT

20 %

2917

90 mOhms

50 uA

1.8 mm

- 55 C

+ 125 C

7343

V Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=40mOhms

T521V226M025ATE040
KEMET
1: S/11.21
2,435In Stock

Mfr. Part #
T521V226M025ATE040

Mouser Part #
80-T521V226M25ATE40

KEMET

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=40mOhms

Learn More

Datasheet

2,435In Stock

Cut Tape

S/11.21

S/7.79

S/6.38

S/5.96

S/5.25

Reel

S/4.83

MouseReel Available

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

: 1,000

22 uF

25 VDC

SMD/SMT

20 %

2917

40 mOhms

55 uA

1.8 mm

- 55 C

+ 105 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 150uF 20% 7343-31 -55 /+125C ESR=50mOhms

T521D157M025ATE050
KEMET
1: S/12.42
221In Stock
7,500On Order
New Product

Mfr. Part #
T521D157M025ATE050

Mouser Part #
80-T521D157M25ATE050

New Product

KEMET

Tantalum Capacitors - Polymer 25V 150uF 20% 7343-31 -55 /+125C ESR=50mOhms

Learn More

Datasheet

221In Stock

7,500On Order

Cut Tape

S/12.42

S/8.99

S/7.79

S/6.85

Reel

S/6.07

MouseReel Available

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

: 500

150 uF

25 VDC

SMD/SMT

20 %

2917

50 mOhms

375 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 15uF 20% 3528-21 -55 /+125C ESR=200mOhms

T521B156M035ATE200
KEMET
1: S/4.87
560In Stock
2,000Expected 4/29/2027
New Product

Mfr. Part #
T521B156M035ATE200

Mouser Part #
80-T521B156M35ATE200

New Product

KEMET

Tantalum Capacitors - Polymer 35V 15uF 20% 3528-21 -55 /+125C ESR=200mOhms

Learn More

Datasheet

560In Stock

2,000Expected 4/29/2027

Cut Tape

S/4.87

S/3.30

S/2.40

S/1.99

S/1.85

Reel

S/1.48

MouseReel Available

Min.: 1
Mult.: 1

: 2,000

15 uF

35 VDC

SMD/SMT

20 %

1411

200 mOhms

52.5 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 22uF 20% 7343-20 -55C / 105C ESR=100mOhms

T521V226M035ATE100
KEMET
1: S/9.15
633In Stock
New Product

Mfr. Part #
T521V226M035ATE100

Mouser Part #
80-T521V226M35ATE100

New Product

KEMET

Tantalum Capacitors - Polymer 35V 22uF 20% 7343-20 -55C / 105C ESR=100mOhms

Learn More

Datasheet

633In Stock

Cut Tape

S/9.15

S/6.46

S/5.53

S/4.83

Reel

S/4.20

View

MouseReel Available

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

: 1,000

22 uF

35 VDC

SMD/SMT

20 %

2917

100 mOhms

77 uA

7343

V Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 47uF 2917 20% ESR=70mOhms

T521X476M035AHE070
KEMET
1: S/33.59
500In Stock

Mfr. Part #
T521X476M035AHE070

Mouser Part #
80-T521X476M35AHE70

KEMET

Tantalum Capacitors - Polymer 35V 47uF 2917 20% ESR=70mOhms

Learn More

Datasheet

500In Stock

Cut Tape

S/33.59

S/24.95

S/21.99

S/19.62

Reel

S/17.59

MouseReel Available

Min.: 1
Mult.: 1

: 500

47 uF

35 VDC

SMD/SMT

20 %

2917

70 mOhms

164.5 uA

4 mm

- 55 C

+ 125 C

7343

X Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 47uF 20% 7343-31 -55 /+125C ESR=70mOhms

T521D476M035ATE070
KEMET
1: S/10.43
2,500On Order
New Product

Mfr. Part #
T521D476M035ATE070

Mouser Part #
80-T521D476M35ATE070

New Product

KEMET

Tantalum Capacitors - Polymer 35V 47uF 20% 7343-31 -55 /+125C ESR=70mOhms

Learn More

Datasheet

2,500On Order

Cut Tape

S/10.43

S/7.43

S/6.42

S/5.64

Reel

S/4.63

MouseReel Available

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

: 500

47 uF

35 VDC

SMD/SMT

20 %

2917

70 mOhms

164.5 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 50V 5.6uF 2917 20% ESR=70mOhms

T521D565M050ATE070
KEMET
1: S/14.79
77In Stock

Mfr. Part #
T521D565M050ATE070

Mouser Part #
80-T521D565M50ATE70

KEMET

Tantalum Capacitors - Polymer 50V 5.6uF 2917 20% ESR=70mOhms

Learn More

Datasheet

77In Stock

Cut Tape

S/14.79

S/13.97

S/7.51

Reel

S/5.02

MouseReel Available

Min.: 1
Mult.: 1

: 500

5.6 uF

50 VDC

SMD/SMT

20 %

2917

70 mOhms

28 uA

2.8 mm

- 55 C

+ 125 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 20V 22uF 2917 20% ESR=90mOhms

T521V226M020ATE090
KEMET
1: S/11.02
68In Stock

Mfr. Part #
T521V226M020ATE090

Mouser Part #
80-T521V226M020ATE90

KEMET

Tantalum Capacitors - Polymer 20V 22uF 2917 20% ESR=90mOhms

Learn More

Datasheet

68In Stock

Cut Tape

S/11.02

S/7.86

S/6.77

S/5.61

S/4.90

Reel

S/4.67

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

22 uF

20 VDC

SMD/SMT

20 %

2917

90 mOhms

44 uA

1.8 mm

- 55 C

+ 125 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 15uF 2917 20% ESR=90mOhms

T521V156M025ATE090
KEMET
1: S/11.02
530In Stock

Mfr. Part #
T521V156M025ATE090

Mouser Part #
80-T521V156M25ATE90

KEMET

Tantalum Capacitors - Polymer 25V 15uF 2917 20% ESR=90mOhms

Learn More

Datasheet

530In Stock

Cut Tape

S/11.02

S/7.86

S/6.77

S/5.96

S/5.29

Reel

S/4.67

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

15 uF

25 VDC

SMD/SMT

20 %

2917

90 mOhms

37.5 uA

1.8 mm

- 55 C

+ 105 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms

T521D476M016ATE040
KEMET
1: S/13.51
224In Stock

Mfr. Part #
T521D476M016ATE040

Mouser Part #
80-T521D476M16ATE40

KEMET

Tantalum Capacitors - Polymer 16V 47uF 2917 20% ESR=40mOhms

Learn More

Datasheet

224In Stock

Cut Tape

S/13.51

S/9.50

S/7.90

S/7.40

Reel

S/6.50

MouseReel Available

Min.: 1
Mult.: 1

: 500

47 uF

16 VDC

SMD/SMT

20 %

2917

40 mOhms

75.2 uA

2.8 mm

- 55 C

+ 105 C

7343

D Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=90mOhms

T521V226M025ATE090
KEMET
1: S/10.24
857In Stock

Mfr. Part #
T521V226M025ATE090

Mouser Part #
80-T521V226M25ATE90

KEMET

Tantalum Capacitors - Polymer 25V 22uF 2917 20% ESR=90mOhms

Learn More

Datasheet

857In Stock

Cut Tape

S/10.24

S/7.24

S/6.23

S/5.45

S/4.87

Reel

S/4.28

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

22 uF

25 VDC

SMD/SMT

20 %

2917

90 mOhms

55 uA

1.8 mm

- 55 C

+ 105 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 50V 1uF 1311 20% ESR=200mohms

T521B105M050ATE2007280
KEMET
1: S/5.96
1,729In Stock

Mfr. Part #
T521B105M050ATE2007280

Mouser Part #
80-T521B105M50E200LR

KEMET

Tantalum Capacitors - Polymer 50V 1uF 1311 20% ESR=200mohms

Learn More

Datasheet

1,729In Stock

Cut Tape

S/5.96

S/4.16

S/3.06

S/2.56

View

Reel

S/1.95

MouseReel Available

Min.: 1
Mult.: 1

: 8,000

1 uF

50 VDC

SMD/SMT

20 %

1411

200 mOhms

5 uA

2.1 mm

- 55 C

+ 105 C

3528

B Case

T521

Reel, Cut Tape, MouseReel

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

T521V686M020ATE050
KEMET
1: S/10.70
841In Stock

Mfr. Part #
T521V686M020ATE050

Mouser Part #
80-T521V686M020ATE50

KEMET

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

Learn More

Datasheet

841In Stock

Cut Tape

S/10.70

S/7.40

S/6.07

S/5.64

S/4.98

Reel

S/4.71

MouseReel Available

Min.: 1
Mult.: 1

: 1,000

68 uF

20 VDC

SMD/SMT

20 %

2917

50 mOhms

136 uA

1.8 mm

- 55 C

+ 105 C

7343

V Case

T521 SSD

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 63V 22uF 2917 20% ESR=75mOhms

T521X226M063AHE075
KEMET
1: S/41.03
77In Stock

Mfr. Part #
T521X226M063AHE075

Mouser Part #
80-T521X226M63AHE075

KEMET

Tantalum Capacitors - Polymer 63V 22uF 2917 20% ESR=75mOhms

Learn More

Datasheet

77In Stock

Cut Tape

S/41.03

S/29.62

S/25.89

S/23.00

Reel

S/21.95

S/21.02

MouseReel Available

Min.: 1
Mult.: 1

: 500

22 uF

63 VDC

SMD/SMT

20 %

2917

75 mOhms

138.6 uA

4 mm

- 55 C

+ 125 C

7343

X Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 33uF 7343 ESR=65mOhms

T521V336M035ATE065
KEMET
1: S/9.23
1,839In Stock
New Product

Mfr. Part #
T521V336M035ATE065

Mouser Part #
80-T521V336M35ATE065

New Product

KEMET

Tantalum Capacitors - Polymer 35V 33uF 7343 ESR=65mOhms

Learn More

Datasheet

1,839In Stock

Cut Tape

S/9.23

S/6.50

S/5.57

S/4.87

Reel

S/3.86

View

MouseReel Available

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

: 1,000

33 uF

35 VDC

SMD/SMT

20 %

2917

65 mOhms

115.5 uA

1.8 mm

- 55 C

+ 105 C

7343

V Coded

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 35V 10uF ESR=100mOhms 3528-21 20%

T521B106M035ATE100
KEMET
1: S/5.45
3,731In Stock
New Product

Mfr. Part #
T521B106M035ATE100

Mouser Part #
80-T521B106M35ATE100

New Product

KEMET

Tantalum Capacitors - Polymer 35V 10uF ESR=100mOhms 3528-21 20%

Learn More

Datasheet

3,731In Stock

Cut Tape

S/5.45

S/2.85

S/2.62

S/2.23

S/2.12

Reel

S/2.11

MouseReel Available

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

: 2,000

10 uF

35 VDC

SMD/SMT

20 %

1311

100 mOhms

35 uA

1.9 mm

- 55 C

+ 125 C

3528

B Case

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 20V 33uF ESR=70mOhms High Volt

T521B336M020ATE070
KEMET
1: S/5.29
3,180In Stock
New Product

Mfr. Part #
T521B336M020ATE070

Mouser Part #
80-T521B336M20ATE070

New Product

KEMET

Tantalum Capacitors - Polymer 20V 33uF ESR=70mOhms High Volt

Learn More

Datasheet

3,180In Stock

Cut Tape

S/5.29

S/2.74

S/2.52

S/2.14

S/2.02

Reel

S/2.02

MouseReel Available

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

: 2,000

33 uF

20 VDC

SMD/SMT

20 %

1411

70 mOhms

1.9 mm

- 55 C

3528

B Code

T521

Reel, Cut Tape, MouseReel

Tantalum Capacitors - Polymer 18V 27uF ESR=55mOhms High Volt

T521T276M018ATE055
KEMET
1: S/3.89
8,919In Stock
6,000Expected 5/6/2027
New Product

Mfr. Part #
T521T276M018ATE055

Mouser Part #
80-T521T276M18ATE055

New Product

KEMET

Tantalum Capacitors - Polymer 18V 27uF ESR=55mOhms High Volt

Learn More

Datasheet

8,919In Stock

6,000Expected 5/6/2027

Cut Tape

S/3.89

S/1.93

S/1.76

S/1.47

S/1.38

Reel

S/1.27

MouseReel Available

Min.: 1
Mult.: 1
Max.: 6,000

: 3,000

27 uF

18 VDC

SMD/SMT

20 %

1411

55 mOhms

48.6 uA

1.1 mm

- 55 C

+ 105 C

3528

T Code

T521

Reel, Cut Tape, MouseReel

T521 High Voltage Polymer Tantalum Capacitors

Customer Service Office

Company

Resources

Support

680 nF
1 uF
1.5 uF
2.2 uF
3.3 uF
4.7 uF
5.6 uF
6.8 uF
10 uF
15 uF
18 uF
22 uF
27 uF
33 uF
47 uF
68 uF
100 uF
150 uF
220 uF
330 uF

15 mOhms
20 mOhms
25 mOhms
30 mOhms
35 mOhms
40 mOhms
45 mOhms
50 mOhms
55 mOhms
60 mOhms
65 mOhms
70 mOhms
75 mOhms
80 mOhms
90 mOhms
100 mOhms
120 mOhms
125 mOhms
150 mOhms
200 mOhms

3.4 uA
4.3 uA
5 uA
6.3 uA
7.5 uA
9.5 uA
11 uA
11.6 uA
16 uA
16.5 uA
20 uA
23.8 uA
24 uA
25 uA
28 uA
29.6 uA
30 uA
34 uA
35 uA
35.2 uA