030/031 AS

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Document Number: 28327

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RIPPLE CURRENT AND USEFUL LIFE

Table 4

Note

• Multiplier of useful life code: CCC205

Fig. 10 - Multiplier of useful life as a function of ambient temperature and ripple current load

Table 5

ENDURANCE TEST DURATION AND USEFUL LIFE

ENDURANCE AT 85 °C (h)

USEFUL LIFE AT 85 °C (h)

2000

3000

MULTIPLIER OF RIPPLE CURRENT (IR) AS A FUNCTION OF FREQUENCY

UR

(V)

FREQUENCY (Hz)

50

100

300

1000

3000

 10 000

IR MULTIPLIER

6.3

0.95

1.00

1.07

1.12

1.15

1.20

10

0.95

1.00

1.07

1.12

1.15

1.20

16

0.90

1.00

1.12

1.20

1.25

1.30

25

0.90

1.00

1.12

1.20

1.25

1.30

40

0.85

1.00

1.20

1.30

1.35

1.40

63

0.85

1.00

1.20

1.30

1.35

1.40

100

0.85

1.00

1.20

1.30

1.35

1.40

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

T

amb (°C)

CCC205

lifetime multiplier

(1)

I

A

I

R

CCC205

I

A = actual ripple current at 100 Hz

I

R = rated ripple current at 100 Hz, 85 °C

(1) Useful life at 85 °C and I

R applied:

case Ø D x L = 4.5 mm x 10 mm to

10 mm x 25 mm: 3000 h