Vishay bccomponents, Aluminum capacitors power long life snap-in, Ripple current and useful life – C&H Technology 059 PLL-SI User Manual
Page 10: Multiplier of ripple current (i, As a function of frequency

Document Number: 28342
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Revision: 18-Aug-08
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058/059 PLL-SI
Aluminum Capacitors
Power Long Life Snap-In
Vishay BCcomponents
RIPPLE CURRENT AND USEFUL LIFE
Table 4
Fig.18 Multiplier of useful life as a function of ambient temperature and ripple current load
I
A
= actual ripple current at 100 Hz
I
R
= rated ripple current at 100 Hz and 105 °C
(1)
Useful life at 105 °C and I
R
applied:
5000 hours for
≤ 50 V types
1.3
1.2
1.1
1.0
0.8
0.5
0.0
40
50
60
70
80
90
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
(1)
2.4
2.5
2.6
2.7
100
110
2
7
life multiplier
1
1.2
1.5
2.5
3
4
5
10
15
20
30
40
60
100
150
200
300
400
600
T
amb
(°C)
I
A
I
R
MULTIPLIER OF RIPPLE CURRENT (I
R
) AS A FUNCTION OF FREQUENCY
FREQUENCY
(Hz)
I
R
MULTIPLIER
U
R
= 10 to 25 V
U
R
= 40 to 100 V
U
R
> 100 V
50
0.93
0.91
0.86
100
1.00
1.00
1.00
200
1.04
1.05
1.13
400
1.07
1.09
1.21
1000
1.11
1.13
1.29
2000
1.13
1.15
1.32
4000
1.15
1.18
1.35
≥ 10 000
1.18
1.22
1.40