Specification Sheet
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 O dielectric. However, a conductive, organic, polymer replaces the MnO as the cathode plate of the capacitor. This results
2 5
2
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.
Outline Drawing
Dimensions - Millimeters
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
V
D
X
3528-21 3.5 ± 0.2
7343-20 7.3 ± 0.3
7343-31 7.3 ± 0.3
7343-43 7.3 ± 0.3
2.8 ± 0.2 1.9 ± 0.2
4.3 ± 0.3 1.9 ± 0.1
4.3 ± 0.3 2.8 ± 0.3
4.3 ± 0.3 4.0 ± 0.3
1.1
1.1
1.5
2.3
2.2
2.4
2.4
2.4
0.8
1.3
1.3
1.3
0.10 ± 0.10 0.13
0.05 0.13
0.10 ± 0.10 0.13
0.10 ± 0.10 0.13
1.1
3.8
3.8
3.8
1.8 2.2
3.5 3.5
3.5 3.5
3.5 3.5
T520 Ratings & Part Number Reference
Cap
DC Leakage
µA +25ºC DF % 120 Hz 100kHz 25º
ESR mW
Ripple Current A rms
100 kHz Max
µF
(±20%)
100
330
68
220
220
470
680
47
150
150
150
220
220
330
330
330
470
68
100
100
100
150
150
220
330
47
Case
Size
KEMET
Part Number
Max
30
99
27
88
+ 25ºC Max
8%
Max
70
25
70
45
25
40
35
70
45
25
55
50
40
45
40
25
40
60
50
80
55
55
40
40
40
70
25ºC
1.10
2.20
1.10
1.70
2.20
1.90
2.20
1.10
1.70
2.20
1.70
1.70
1.90
1.80
1.90
2.40
2.00
1.40
1.60
1.40
1.70
1.70
1.90
1.90
2.00
1.50
85ºC
0.99
2.00
0.99
1.50
2.00
1.70
2.00
0.99
1.50
2.00
1.50
1.60
1.70
1.60
1.70
2.20
1.80
1.20
1.40
1.20
1.50
1.50
1.70
1.70
1.80
1.35
105ºC
0.44
0.90
0.44
0.70
0.90
0.80
0.90
0.44
0.70
0.90
0.70
0.70
0.80
0.70
0.80
1.00
0.80
0.50
0.60
0.50
0.70
0.70
0.80
0.80
0.80
0.60
B/3528-21 T520B107M003AS
V/7343-20 T520V337M003AS
B/3528-21 T520B686M004AS
V/7343-20 T520V227M004AS
V/7343-20 T520V227M004AS4350
D/7343-31 T520D477M004AS
X/7343-43 T520X687M004AS
B/3528-21 T520B476M006AS
V/7343-20 T520V157M006AS
V/7343-20 T520V157M006AS4350
D/7343-31 T520D157M006AS
D/7343-31 T520D227M006AS
D/7334-31 T520D227M006AS4350
D/7343-31 T520D337M006AS
D/7343-31 T520D337M006AS4350
D/7343-31 T520D337M006AS4351
X/7343-43 T520X477M006AS
V/7343-20 T520V686M010AS
V/7343-20 T520V107M010AS
D/7343-31 T520D107M010AS
D/7343-31 T520D107M010AS4350
D/7343-31 T520D157M010AS
D/7343-31 T520D157M010AS4350
D/7343-31 T520D227M010AS
X/7343-43 T520X337M010AS
D/7343-31 T520D476M016AS
10%
8%
10%
10%
10%
10%
8%
88
188
272
30
95
95
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
95
139
139
208
208
208
296
68
100
100
100
150
150
220
330
75
Note: New values are listed in italics and blue.