
8AF Series
2
Bulletin I20262 Rev.A 06/03
www.irf.com
ELECTRICALSPECIFICATIONS
Voltage Ratings
Voltage
V
RRM , maximum repetitive
V
RSM , maximum non-
I
RRM max.
Typenumber
Code
peakreversevoltage
repetitive peak rev. voltage
@ T
J = 150°C
VV
mA
1
100
150
5
2
200
300
5
4
400
500
5
8
800
900
5
8AF
I
F(AV)
Maximum average forward current
50
A
180° conduction, half sine wave
@ Case temperature
150
°C
I
F(RMS)
Maximum RMS forward current
79
A
I
FSM
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
628
t = 8.3ms reapplied
Sinusoidal half wave,
I2t
Maximum I2t for fusing
2546
A2s
t = 10ms
No voltage Initial T
J = TJ max.
2324
t = 8.3ms reapplied
1800
t = 10ms
100% V
RRM
1643
t = 8.3ms reapplied
I2√t
Maximum I2√t for fusing
25455
A2√s t = 0.1 to 10ms, no voltage reapplied
VF(TO)1 Low level value of threshold voltage
0.60
V
(16.7% x π x I
F(AV) < I < π x IF(AV)), TJ = TJ max.
VF(TO)2 High level value of threshold voltage
0.68
(π x IF(AV) < I < 20 x π x IF(AV)), TJ = TJ max.
rf1
Low level value of forward slope resistance
6.66
m
(16.7% x π x IF(AV) < I < π x IF(AV)), TJ = TJ max.
rf2
High level value of forward slope resistance
6.25
(π x IF(AV) < I < 20 x π x IF(AV)), TJ = TJ max.
V
FM
Maximum forward voltage drop
1.45
V
T
J = 25°C, IFM = π x rated IF(AV)
Parameter
8AF
Units Conditions
Forward Conduction
T
J
Max. junction operating temperature range
- 65 to 195
°C
Tstg
Storage temperature range
- 65 to 195
RthJC Max. thermal resistance, junction to case
0.60
K/W
DC operation
RthCS Typical thermal resistance, case to heatsink
0.50
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 diode should then be press fitted, ensuring that the sides of the diode are kept parallel to the sides of the hole.