158 pul-si, Vishay bccomponents, Aluminum capacitors power ultra long life snap-in – C&H Technology 158 PUL-SI User Manual
Page 8
Document Number: 28375
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Revision: 07-Oct-09
97
158 PUL-SI
Aluminum Capacitors
Power Ultra Long Life Snap-In
Vishay BCcomponents
RIPPLE CURRENT AND USEFUL LIFE
Table 3
MULTIPLIER OF RIPPLE CURRENT (I
R
) AS A FUNCTION OF FREQUENCY
FREQUENCY
(Hz)
I
R
MULTIPLIER
U
R
= 16 V to 25 V
U
R
= 40 V to 100 V
50
0.93
0.91
100
1.00
1.00
200
1.04
1.05
400
1.07
1.09
1000
1.11
1.13
2000
1.13
1.15
4000
1.15
1.18
≥ 10 000
1.18
1.22
1.3
1.2
1.1
1.0
0.8
0.5
0.0
40
50
60
70
80
90
T
amb
(˚C)
IA
R
I
MGA454
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
Fig.6 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