MBRD650CT, MBRD660CT
Bulletin PD-20755 rev. E 05/06
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
(2) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/ D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= 80% rated V
R
Average Forward Current - I
F(AV)
(A)
Allowable Case Temperature (°C)
00
10
20
30
40
50
60
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
DC
Square wave (D = 0.50)
80% Rated Vr applied
see note (2)
0
.5
1
.5
2
.5
3
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Average Power Loss (Watts)
Average Forward Current - I
F(AV)
(A)
10
100
000
At Any Rated Load Condition
And With rated Vrrm Applied
Following Surge
Square Wave Pulse Duration - t
p
(microsec)
Non-Repetitive Surge Current - I
FSM
(A)
