10BQ030
Bulletin PD-20708 rev. G 07/04
130
DC
120
D = 0.20
110 D = 0.25
D = 0.33
D = 0.50
D = 0.75
100
Square wave (D = 0.50)
80%Rated VR applied
see note (2)
90
0
0.4
0.8
1.2
1.6
Average Forward Current - I F(AV) (A)
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
1000
0.5
D = 0.20
D = 0.25
0.4 D = 0.33
D = 0.50
D = 0.75
0.3
DC
RMSLimit
0.2
0.1
0
0
0.4
0.8
1.2
1.6
Average Forward Current - I F(AV) (A)
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
100
At Any Rated Load Condition
And With
Following
Ra t ed
Surge
V RRM
Applied
10
10
100
1000
10000
Square Wave Pulse Duration - t p (microsec)
Fig. 6 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = 80% rated VR
4
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