Document Number: 28396

www.vishay.com

Revision: 09-May-11

11

This document is subject to change without notice.

140 CRH

Aluminum Capacitors

SMD (Chip), High Temperature

Vishay BCcomponents

RIPPLE CURRENT AND USEFUL LIFE

Fig. 11 - Multiplier of useful life as a function of ambient temperature and ripple current load

Table 9

FREQUENCY

(Hz)

50

0.60

0.45

0.40

100

0.70

0.60

0.55

300

0.80

0.75

0.70

1000

0.85

0.85

0.85

3000

0.90

0.90

0.90

10 000

0.95

0.95

0.95

30 000

0.97

0.97

0.97

100 000

1.00

1.00

1.00

3.8

3.7

3.6

3.5

3.4

3.3

3.2

3.0

2.8

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.5

0.0

3.1

40

50

60

70

80

90

100

110

120

130

3.9

4.0

4.1

4.2

4.3

I

A

I

R

Lifetime multiplier

(1)

T

MBC242

I

I

(1)

Useful life at 125 °C and I

see Table 8