10BQ030
Bulletin PD-20708 rev. D 02/02
1 30
A llow ab le C a se Tem p era ture - ( C )
DC
1 20
0.5
A vera ge Pow er Loss - (W a tts)
D
D
D
D
D
=
=
=
=
=
0.20
0.25
0.33
0.50
0.75
DC
RM S Lim it
0.2
0.4
1 10
D
D
D
D
D
=
=
=
=
=
0.20
0.25
0.33
0.50
0.75
0.3
1 00
Squa re w ave (D = 0.50)
80% Ra ted V
R
a pp lied
see note (2)
0.1
90
0
0 .4
0.8
1 .2
1 .6
A vera ge Forw a rd C urren t - I
F(AV)
(A)
0
0
0 .4
0 .8
1.2
1 .6
Averag e Forw ard C urrent - I
F(AV )
(A )
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
1000
N on-Rep etitive Surg e C urrent - I
FS M
(A )
100
At An y Ra ted Load C on dition
An d W ith Rated V
RRM
Ap plied
Follow in g Surg e
10
10
100
1000
10000
Squa re W a ve Pulse D ura tion - t p (m icrosec)
Fig. 6 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(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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