135D357X0025K2 データシートの表示（PDF） - Vishay Semiconductors

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135D357X0025K2

Wet Tantalum Capacitors Tantalum-Case with Glass-to-Tantalum Hermetic Seal for - 55 °C to + 200 °C Operation

Vishay Semiconductors 

www.vishay.com

6.2 The dissipation factor may be calculated from the

equivalent series resistance and capacitance values as

shown:

DF

=

2--------f--R----C---

104

where:

DF = Dissipation Factor in %

R = ESR in 

C = Capacitance in μF

f = Frequency in Hz

At 120 Hz, the above equation becomes:

DF

=

-R-----x-----C---

13.26



For example, percent dissipation factor of a 30 μF, 6 V

capacitor, which has a maximum ESR of 4.0  at

+ 25 °C and 120 Hz, would be calculated as shown:

DF

=

2---------x-----1---2----0-----x----4------x----3----0-

104

=

4------x----3----0-

13.26

=

9.05 %

7. Leakage Current: Measurements shall be made at the

applicable rated working voltage at + 25 °C ± 5 °C

through application of a steady source of power, such

as a regulated power supply. A 1000  resistor to limit

the charging current shall be conected in series with

each capacitor under test. Rated working voltage shall

be applied to capacitors for 5 minutes before making

leakage current measurements.

7.1 The maximum leakage current for any capacitor shall

not exceed the maximum value in mA listed in the

Standard Ratings and Extended Ratings table for each

capacitor.

Note

• Leakage current varies with applied voltage. See graph next

column for the appropriate adjustment factor

8. Low Temperature Impedance: The impedance of any

capacitor at - 55 °C at 120 Hz, shall not exceed the

values given in the Standard Ratings and Extended

Ratings tables.

9. Life Test: Capacitors are capable of withstanding a

2000 h life test at a temperature of + 85 °C or + 125 °C

at the applicable rated DC working voltage.

9.1 Following the life test, the capacitors shall be returned

to 25 °C ± 5 °C. The leakage current, measured at the

+ 85 °C rated voltage, shall not be in excess of the

original requirement; the capacitance value shall not

exceed 150 % of the initial requirement; the

capacitance value shall not change more than 10 %

from the initial measurement.

135D

Vishay

TYPICAL LEAKAGE CURRENT FACTOR

RANGE

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0

10 20 30 40 50 60 70 80 90 100

PERCENT OF RATED VOLTAGE

9.3 Capacitors are capable of withstanding life test at the

following conditions:

TEMPERATURE

+ 175 °C

+ 175 °C

+ 200 °C

HOURS

2000

300

300

% RATED VOLTAGE

50

65

60

9.4 Following the life test, the capacitors shall be returned

to + 25 °C ± 5 °C. The leakage current, at the rated

voltage shall not exceed 200 % of the original

requirement or ± 10 μA, whichever is greater; the

equivalent series resistance shall not be greater than

200 % of the original requirement; the capacitance

value shall not increase by more than 10 % or decrease

by more than 20 % from the initial measurement.

Revision: 09-Apr-13

8

Document Number: 40024

For technical questions, contact: tantalum@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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