Document Number: 40025

Revision 15-Oct-03

www.vishay.com

60

138D

Vishay

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TYPICAL CURVES OF IMPEDANCE AS A FUNCTION OF FREQUENCY AT VARIOUS TEMPERATURES

PERFORMANCE CHARACTERISTICS

1.

Operating Temperature: Capacitors are designed to

operate over the temperature range of - 55

°C to

+125

°C.

2.

DC Working Voltage: The DC working voltage is the

maximum operating voltage for continuous duty at the

rated temperature.

3.

Surge Voltage: The surge DC rating is the maximum

voltage to which the capacitors should be subjected

under any conditions. This includes transients and

peak ripple at the highest line voltage. The surge

voltage of capacitors rated below 150 volts is 115% of

the rated DC working voltage. The surge voltage of

capacitors rated at 150 volts DC is 165 volts.

3.1

Surge Voltage Test: Capacitors shall withstand the

surge voltage test applied through a 1000 ohm

± 10%

resistor in series with the capacitor and voltage source

at the rate of one-half minute on, four and one-half

minutes off, for 1000 successive test cycles at + 85

°C

or + 125

°C.

4.

Capacitance Tolerance: The capacitance of all

capacitors shall be within the specified tolerance limits

of the nominal rating.

UP TO + 85

AT + 125

UP TO + 85

AT + 125

WORKING

WORKING

WORKING

WORKING

VOLTAGE

VOLTAGE

VOLTAGE

VOLTAGE

(V)

(V)

(V)

(V)

6

4

35

22

8

5

50

30

10

7

60

40

15

10

75

50

20

13

100

70

25

15

125

85

30

20

150

100

4.1

Capacitance measurements shall be made by the

bridge method at or referred to, a frequency of 120Hz

at a temperature of + 25

°C. A polarizing voltage shall

be used of such magnitude that there shall be no

reversal of polarity due to the AC component. The

maximum AC voltage will be 1 volt rms applied during

measurement.

5.

Capacitance Change With Temperature:

The

capacitance change with temperature shall not exceed

the limits given in the Standard and Extended Ratings

Table for each capacitor.

6.

Equivalent Series Resistance: Measurements shall

be made by the bridge method at or referred to, a

frequency of 120Hz at a temperature of + 25

°C. A

polarizing voltage shall be used of such magnitude that

there shall be no reversal of polarity due to the AC

component. The maximum AC voltage will be 1 volt

rms applied during measurement.

6.1. The equivalent series resistance shall not exceed the

maximum value in ohms listed in the Standard and

Extended Ratings Table for each capacitor.

6.2. The dissipation factor may be calculated from the

equivalent series resistance and capacitance values

as shown:

DF =

2

πfRC

where:

DF = Dissipation Factor in %

R = ESR in ohms

C = Capacitance in

µF

f = frequency in Hz

- 55

°C

- 40

°C

- 20

°C

+ 25

°C

+ 85

°C

+125

°C

0.2

1.0

10

100

200

FREQUENCY IN HERTZ

100

1K

10K

100K

1M

10M

“K” Case 120

µF, 25V Capacitors

- 55

°C

- 40

°C

- 20

°C

+ 25

°C

+ 85

°C

+125

°C

FREQUENCY IN HERTZ

100

1K

10K

100K

1M

10M

0.2

1.0

10

100

200

“C” Case 10

µF. 100V Capacitors

Wet Tantalum Capacitors

Sintered Anode TANTALEX

with True Glass-to-Tantalum Seal