Datasheet

9© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard T2043_T35X • 10/22/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Tantalum Through-Hole Capacitors – Radial Dipped
T350, T351, T352, T353, T354, T355 & T356 UltraDip II Polar
Recommended Voltage Derating Guidelines
−55°C to 85°C 85°C to 125°C
% Change in working
DC voltage with
temperature
V
R
66% of V
R
Ripple Current/Ripple Voltage
Permissible AC ripple voltage and current are related to
equivalent series resistance (ESR) and the power dissipation
capabilities of the device. Permissible AC ripple voltage that
may be applied is limited by following criteria:
1. Dissipated power must not exceed the limits specied
for the Series.
2. The positive peak AC voltage plus the DC bias voltage,
if any, must not exceed the DC voltage rating of the
capacitor.
3. The negative peak AC voltage in combination with
bias voltage, if any, must not exceed the allowable limits
specied for reverse voltage.
Thermal capacities for the various case sizes have been
determined empirically and are listed below. The “ripple
voltage” permissible may be calculated from the impedance
and ESR data shown in the respective product section.
Temperature Compensation Multipliers
for Maximum Power Dissipation
T ≤ 25°C
T ≤ 85°C
T ≤ 125°C
1.00
0.90
0.40
T= Environmental Temperature
The maximum power dissipation rating must be reduced with increasing
environmental operating temperatures. Refer to the Temperature
Compensation Multiplier table for details.
Case Size
Maximum Power Dissipation
(Pmax) Watts at 25°C
A
0.040
B
0.050
C
0.060
D
0.065
E
0.070
F
0.080
G
0.090
H
0.100
J
0.110
K
0.120
L
0.130
M
0.140
Using the P max of the device, the maximum allowable rms
ripple current or voltage may be determined.
I(max) = √P max/R
E(max) = Z √P max/R
I = rms ripple current (amperes)
E = rms ripple voltage (volts)
P max = maximum power dissipation (watts)
R = ESR at specied frequency (ohms)
Z = Impedance at specied frequency (ohms)
0%
20%
40%
60%
80%
100%
120%
-55 25 45 85 105 125
% Working Voltage
Temperature (°C)
67%
% Change in working DC voltage
with temperature