C&H Technology 059 PLL-SI - Manual (Page 10)

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Revision: 18-Aug-08 9
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