157PUM-SI_12 Datasheet, PDF (7/9 Pages) Vishay Siliconix – Aluminum Capacitors Power Ultra Miniature Snap-In

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RIPPLE CURRENT AND USEFUL LIFE
2.4
157 PUM-SI
Vishay BCcomponents
MGA453
2.3
I_A
I_R
2.2
2.1
2.0
1.9
1.8
1.7
life multiplier
1.6
1.5
1.4
1.3
1.2
1.1
(1)
I_A = Actual ripple current at 120 Hz
1.0
I_R = Rated ripple current at 120 Hz and 85 °C
0.8
(1) _{Useful life at 85 °C and IR applied: 5000 h}
0.5
0.0
40
50
60
70
80
90
T_amb (°C)
Fig. 6 - Multiplier of useful life as a function of ambient temperature and ripple current load
Table 3
MULTIPLIER OF RIPPLE CURRENT (I_R) AS A FUNCTION OF FREQUENCY
FREQUENCY
(Hz)
I_R MULTIPLIER
50
0.90
100
0.95
120
1.00
200
1.15
1000
1.30
 10 000
1.40
Revision: 09-Mar-12
7
Document Number: 28338
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