Datasheet

123 10/02
Standard – 85 °C
B43455 / B43457
Useful life
depending on ambient temperature T
A
(for natural cooling) and versus temperature of case base T
B
(for base cooling) under ripple current operating conditions
1)
Frequency factor of
permissible ripple current I~
versus frequency f
8 000 h 10 000 h 25 000 h 50 000 h 100 000 h 250 000 h
0
40
50 60 70 80 90
AB
;
˚C
TT
100
3,0
2,0
1,5
1,0
0,5
B43455/457
KAL0526-9
(B)
R
~ ΙΙ
;
~
~
ΙΙ ~
R
1) The ripple current refers to I~
R
for natural cooling or to I~
R
(B) for base cooling, respectively.
Refer to page 40 for an explanation on how to interpret the useful life graphs.
KAL0394-V
0,8
f
0,9
1,0
1,1
1,2
1,3
1,5
10
2
210
3
5Hz
a
b
c
5
B43455/457
Ι
100 Hz
f
~
Ι
~
d (mm) 51,6 64,3 76,9 91,0
Curvecbac