T520 Series – KO-CAP – KEMET Organic Capacitor

Low ESR Tantalum Chip Capacitor with Polymer Electrode

KEMET introduces new ratings to its popular T520 Series KEMET Organic - KO - Capacitor. The KO-CAP is a Tantalum capacitor, with

Ta anode and Ta 2O5 dielectric. However, a conductive, organic, polymer replaces the MnO2 as the cathode plate of the capacitor. This results

in very low ESR and improved cap retention at high frequency. The KO-CAP also exhibits a benign failure mode, which eliminates the ignition

failures that can occur in standard Tantalum types. Note also that KO-CAPs may be operated at voltages up to 80% of rated voltage with equiv-

alent or better reliability than standard tantalums operated at 50% of rated voltage.

The new T520 series captures the best features of multilayer ceramic caps (low ESR and high frequency cap retention), aluminum elec-

trolytics (benign failure mode), and proven solid tantalum technology (volumetric efficiency, surface mount capability, and no wearout mecha-

nism). The KO-CAP can reduce component counts, eliminate through-hole assembly by replacing cumbersome leaded aluminum capacitors,

and offer a more cost effective solution to high-cost high-cap ceramic capacitors. These benefits allow the designer to save both board space

and money.

The T520 operating temperature range is -55ºC to +105ºC. Above 85ºC, the capacitor voltage rating drops to 0.8 times rated voltage at

105ºC.

Case Size

KEMET

EIA

L

W

H

K ±0.20

F ±0.1

S ±0.3

X(Ref)

T(Ref) A(Min) G(ref) E(ref)

B

3528-21

3.5 ± 0.2

2.8 ± 0.2

1.9 ± 0.2

1.1

2.2

0.8

0.10 ± 0.10

0.13

1.1

1.8

2.2

V

7343-20

7.3 ± 0.3

4.3 ± 0.3

1.9 ± 0.1

1.1

2.4

1.3

0.05

0.13

3.8

3.5

3.5

D

7343-31

7.3 ± 0.3

4.3 ± 0.3

2.8 ± 0.3

1.5

2.4

1.3

0.10 ± 0.10

0.13

3.8

3.5

3.5

X

7343-43

7.3 ± 0.3

4.3 ± 0.3

4.0 ± 0.3

2.3

2.4

1.3

0.10 ± 0.10

0.13

3.8

3.5

3.5

Dimensions - Millimeters

Specification Sheet

T520 Ratings & Part Number Reference

Cap

DC Leakage

ESR m

Ω

Ripple Current A rms

µF

Case

KEMET

µA +25ºC

DF % 120 Hz 100kHz 25º

100 kHz Max

(±20%)

Size

Part Number

Max

+ 25ºC Max

Max

25ºC

85ºC

105ºC

100

B/3528-21

T520B107M003AS

30

8%

70

1.10

0.99

0.44

330

V/7343-20

T520V337M003AS

99

10%

25

2.20

2.00

0.90

68

B/3528-21

T520B686M004AS

27

8%

70

1.10

0.99

0.44

220

V/7343-20

T520V227M004AS

88

10%

45

1.70

1.50

0.70

220

V/7343-20

T520V227M004AS4350

88

10%

25

2.20

2.00

0.90

470

D/7343-31

T520D477M004AS

188

10%

40

1.90

1.70

0.80

680

X/7343-43

T520X687M004AS

272

10%

35

2.20

2.00

0.90

47

B/3528-21

T520B476M006AS

30

8%

70

1.10

0.99

0.44

150

V/7343-20

T520V157M006AS

95

10%

45

1.70

1.50

0.70

150

V/7343-20

T520V157M006AS4350

95

10%

25

2.20

2.00

0.90

150

D/7343-31

T520D157M006AS

95

10%

55

1.70

1.50

0.70

220

D/7343-31

T520D227M006AS

139

10%

50

1.70

1.60

0.70

220

D/7334-31

T520D227M006AS4350

139

10%

40

1.90

1.70

0.80

330

D/7343-31

T520D337M006AS

208

10%

45

1.80

1.60

0.70

330

D/7343-31

T520D337M006AS4350

208

10%

40

1.90

1.70

0.80

330

D/7343-31

T520D337M006AS4351

208

10%

25

2.40

2.20

1.00

470

X/7343-43

T520X477M006AS

296

10%

40

2.00

1.80

0.80

68

V/7343-20

T520V686M010AS

68

10%

60

1.40

1.20

0.50

100

V/7343-20

T520V107M010AS

100

10%

50

1.60

1.40

0.60

100

D/7343-31

T520D107M010AS

100

10%

80

1.40

1.20

0.50

100

D/7343-31

T520D107M010AS4350

100

10%

55

1.70

1.50

0.70

150

D/7343-31

T520D157M010AS

150

10%

55

1.70

1.50

0.70

150

D/7343-31

T520D157M010AS4350

150

10%

40

1.90

1.70

0.80

220

D/7343-31

T520D227M010AS

220

10%

40

1.90

1.70

0.80

330

X/7343-43

T520X337M010AS

330

10%

40

2.00

1.80

0.80

47

D/7343-31

T520D476M016AS

75

10%

70

1.50

1.35

0.60

Outline Drawing

F3233E 10/02

Note: New values are listed in italics and blue.