30CTQ..., 30CTQ...S, 30CTQ...-1
Bulletin PD-20606 rev. A 11/01
1 80
Allowab le Ca se Tem perat ure - ( C)
1 70
1 60
1 50
1 40
1 30
1 20
1 10
se e no te (2 )
Sq ua re w a v e (D = 0.50)
80% Ra ted V
R
a p p lied
7
Average P owe r Lo ss - (W atts)
6
5
4
RM S Lim it
3
2
1
0
0
2
4
6
8
10
12
A verag e Fo rw a rd C urrent - I
F(A V )
(A )
DC
D
D
D
D
D
=
=
=
=
=
0.20
0.25
0.33
0.50
0.75
DC
1 00
0
2
4
6
8
10
12
14
A vera ge Forw ard C urren t - I
F(A V)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
1000
N o n-Repe titive Surg e C urren t - I
FSM
(A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
At Any Rated Load C ond ition
An d W ith Rated V
RRM
Ap plied
Follow ing Surge
100
10
100
1000
10000
Square W ave Pulse D uration - t p (m icrosec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
H IG H-SPE ED
SW ITC H
FR EE-W H E EL
D IO D E
40H FL40 S02
V d = 25 V olt
D UT
IRFP460
Rg = 25 ohm
+
C URRE NT
M O N ITO R
Fig. 8 - Unclamped Inductive Test Circuit
(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
= 10 V
4
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