Datasheet

2003 Feb 25 18
BCcomponents Product specification
Aluminum electrolytic capacitors
Axial Standard Miniature
021 ASM
RIPPLE CURRENT AND USEFUL LIFE
Table 5 Multiplier of ripple current (I
R
) as a function of frequency
FREQUENCY
(Hz)
I
R
MULTIPLIER
U
R
= 6.3 to 16 V U
R
= 25 to 40 V U
R
= 63 to 100 V
50 0.95 0.9 0.85
100 1 1 1
300 1.07 1.12 1.2
1 000 1.12 1.2 1.3
3 000 1.15 1.25 1.35
³10 000 1.2 1.3 1.4
3.3
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.5
0.0
3.1
40 50 60 70 80 90 100
T
amb
(°C)
CCC205
lifetime multiplier
(1)
70
50
4.0
6 .0
2.0
1.5
30
15
10
3.0
20
1.0
I
A
I
R
Fig.20 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, 85 °C.
(1) Useful life at 85 °C and I
R
applied:
case ÆD ´ L = 4.5 ´ 10 to 10 ´ 25 mm: 2 500 hours
case ÆD ´ L = 10 ´ 30 to 21 ´ 38 mm:
8 000 hours.