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T2059_T550 • 6/23/2016

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Tantalum Through-Hole Capacitors – Hermetically Sealed

T550 Axial Polymer Hermetic Seal (PHS) 105ºC and DLA Series

Recommended Voltage Derating Guidelines

-55°C to 85°C

85°C to 105°C

% Change in Working DC

Voltage with Temperature

Recommended Maximum

Application Voltage

(As % of Rated Voltage)

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 two criteria:

1. The positive peak AC voltage plus the DC bias voltage, if any, must not exceed the DC voltage rating of the capacitor.

2.ThenegativepeakACvoltageincombinationwithbiasvoltage,ifany,mustnotexceedtheallowablelimitsspecifiedforreverse

voltage.

The maximum power dissipation by case size can be determined using the below left table. The maximum power dissipation

rating stated in the table must be reduced with increasing environmental operating temperatures. Refer to the below right table for

temperature compensation requirements.

Case Code

Maximum Power

Dissipation (P

mWatts at 25°C

with +60°C Rise

KEMET

MIL–PRF–39006/22/

25/30/31 Case Size

B

T2

715

Temperature Compensation Multipliers for

Maximum Power Dissipation (P

T≤45°C

45°C<T≤85°C

85°C<T≤105°C

1.00

0.50

0.10

T= Environmental Temperature

Using the P

current or voltage may be determined.

I = rms ripple current (amperes)

E = rms ripple voltage (volts)

P

R = ESR at specified frequency (ohms)

Z = Impedance at specified frequency (ohms)

The maximum power dissipation rating must be reduced with increasing

environmental operating temperatures. Refer to the Temperature Compensation

Multiplier table for details.

0%

20%

40%

60%

80%

100%

120%

-55

25

45

85

105

Temperature (°C)

% Change in Working DC Voltage

with Temperature

Recommended Maximum Application

Voltage (As % of Rated Voltage)

80%