Instruction Manual

Document Number: 28375 For technical questions, contact: [e-mail]
www.vishay.com
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)
I
A
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