30CTQ...SPbF/30CTQ...-1PbF
Vishay High Power Products
Schottky Rectifier, 2 x 15 A
160
150
140
130
120
110
100
90
80
70
60
14
Allowable Case Temperature (°C)
Average Power Loss (W)
12
10
8
6
4
2
0
DC
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMS limit
Square wave (D = 0.50)
80 % rated V
R
applied
DC
See note (1)
0
5
10
15
20
25
0
5
10
15
20
25
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
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 (Per Leg)
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
Formula used: T
C
= T
J
- (Pd + Pd
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
= 10 V
(1)
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4
For technical questions, contact: diodes-tech@vishay.com
Document Number: 94190
Revision: 13-Aug-08