
8AF Series
2
Bulletin I20262 05/96
www.irf.com
ELECTRICAL SPECIFICATIONS
Voltage Ratings
Voltage
Type number
Code
V
RRM
, maximum repetitive
peak reverse voltage
V
V
RSM
, maximum non-
repetitive peak rev. voltage
V
I
RRM
max.
@ T
J
= T
J
max
mA
05
1
2
50
100
200
75
150
300
7
7
5
4
400
500
5
8AF
I
F(AV)
Maximum average forward current
50
A
180° conduction, half sine wave
@ Case temperature
150
°C
I
F(RMS)
I
FSM
Maximum RMS forward current
79
A
Maximum peak, one-cycle forward,
714
A
t = 10ms
No voltage
non-repetitive surge current
747
t = 8.3ms
reapplied
600
t = 10ms
100% V
RRM
reapplied
628
t = 8.3ms
Sinusoidal half wave,
I
2
t
Maximum I
2
t for fusing
2546
A
2
s
t = 10ms
No voltage
Initial T
J
= T
J
max.
2324
t = 8.3ms
reapplied
1800
t = 10ms
100% V
RRM
reapplied
1643
t = 8.3ms
I
2
√
t
Maximum I
2
√
t for fusing
25455
A
2
√
s
t = 0.1 to 10ms, no voltage reapplied
V
F(TO)1
Low level value of threshold voltage
0.60
V
(16.7% x
π
x I
F(AV)
< I <
π
x I
F(AV)
), T
J
= T
J
max.
(
π
x I
F(AV)
< I < 20 x
π
x I
F(AV)
), T
J
= T
J
max.
(16.7% x
π
x I
F(AV)
< I <
π
x I
F(AV)
), T
J
= T
J
max.
(
π
x I
F(AV)
< I < 20 x
π
x I
F(AV)
), T
J
= T
J
max.
T
J
= 25°C, I
FM
=
π
x rated I
F(AV)
V
F(TO)2
High level value of threshold voltage
0.68
r
f1
Low level value of forward slope resistance
6.66
m
r
f2
V
FM
High level value of forward slope resistance
6.25
Maximum forward voltage drop
1.45
V
Parameter
8AF
Units Conditions
Forward Conduction
T
J
Max. junction operating temperature range
- 65 to 195
°C
T
stg
Storage temperature range
- 65 to 195
R
thJC
R
thCS
Max. thermal resistance, junction to case
Typical thermal resistance, case to heatsink
0.60
0.50
K/W
DC operation
As per mounting details
wt
Approximate weight
10 (0.36)
g (oz)
Case style
B-47
See outline table
Parameter
8AF
Units Conditions
Thermal and Mechanical Specifications
MOUNTING: A 12.6 ± 0.02mm (0.496 to 0.497 inch) diameter hole should be drilled in heatsink, the leading edge chamfered to 0.038mm (0.015
inch) x 45°. The autodiode should then be press fitted, ensuring that the sides of the autodiode are kept parallel to the sides of the hole.