12CWQ03FNPbF
Bulletin PD-21087 rev. A
05/06
150
Allowable Case T
emperature - (°C)
4
Average Power Loss - (Watts
)
DC
145
140
135
130
125
see note (2)
3.5
3
2.5
2
1.5
1
0.5
0
0
1
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMSLimit
DC
S
quare wave (D = 0.50)
80% Rated V
R
applied
120
0
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
Average Forward Current - I
F(AV)
(A)
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
1000
Non-Repetitive S
urge Current - I
FS
(A)
M
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
100
10
100
1000
10000
S
quare Wave Pulse Duration - t p (micros
ec)
Fig. 7 - Max. Non-Repetitive Surge Current (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
4
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