32CTQ...
Vishay High Power Products
Schottky Rectifier, 2 x 15 A
160
10
Allowable Case Temperature (°C)
Average Power Loss (W)
150
140
130
120
110
100
90
80
0
5
10
15
20
25
See note (1)
Square wave (D = 0.50)
80 % rated V
R
applied
DC
8
6
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
4
DC
2
0
0
5
10
15
20
25
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
I
FSM
- Non-Repetitive Surge Current (A)
1000
At any rated load condition
and with rated V
RRM
applied
following surge
100
10
100
1000
10 000
t
p
- Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
High-speed
switch
Freewheel
diode
40HFL40S02
+ V
d
= 25 V
D.U.T.
IRFP460
R
g
= 25
Ω
Current
monitor
Fig. 8 - Unclamped Inductive Test Circuit
Note
(1)
Formula used: T = T - (Pd + Pd
C
J
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= 80 % rated V
R
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 93324
Revision: 21-Aug-08
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