140CRH_11 Datasheet, PDF (11/13 Pages) Vishay Siliconix – Aluminum Capacitors SMD (Chip), High Temperature

Aluminum Capacitors
SMD (Chip), High Temperature
140 CRH
Vishay BCcomponents
RIPPLE CURRENT AND USEFUL LIFE
I_A ^4.3
I_{R 4.2}
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
2.8
MBC242
Lifetime multiplier
2.6
2.4
2.2
I_A = Actual ripple current at 100 kHz
I_R = Rated ripple current at 100 kHz, 125 °C
(1) _{Useful life at 125 °C and IR applied;}
see Table 8
2.0
1.8
1.6
1.4
1.2
1.0
(1)
0.8
0.5
0.0
40
50
60
70
80
90
100
110
120
130 T_amb (°C)
Fig. 11 - Multiplier of useful life as a function of ambient temperature and ripple current load
Table 9
MULTIPLIER OF RIPPLE CURRENT (I_R) AS A FUNCTION OF FREQUENCY
FREQUENCY
(Hz)
U_R = 6.3 V TO 25 V
I_R MULTIPLIER
U_R = 35 V AND 50 V
50
0.60
0.45
100
0.70
0.60
300
0.80
0.75
1000
0.85
0.85
3000
0.90
0.90
10 000
0.95
0.95
30 000
0.97
0.97
100 000
1.00
1.00
U_R = 63 V
0.40
0.55
0.70
0.85
0.90
0.95
0.97
1.00
Document Number: 28396
Revision: 09-May-11
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11
This document is subject to change without notice.
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