Owner's manual

Document Number: 93400 For technical questions, contact: [e-mail]
www.vishay.com
Revision: 19-Aug-08 5
81CNQ...A Series
Schottky Rectifier
New Generation 3
D-61 Package, 2 x 40 A
Vishay High Power Products
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current (Per Leg)
Fig. 6 - Forward Power Loss Characteristics (Per Leg)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
Fig. 8 - Unclamped Inductive Test Circuit
Allowable Case Temperature (°C)
Average Forward Current - I
F(AV)
(A)
140
150
160
170
180
0 102030405060
DC
RthJC (DC) = 0.85 °C/W
Average Power Loss (Watts)
Average Forward Current - I
F(AV)
(A)
0
4
8
12
16
20
24
28
32
0 102030405060
DC
RMS Limit
D = 0.08
D = 0.17
D = 0.25
D = 0.33
D = 0.50
Non-Repetitive Surge Current - I
FSM
(A)
Square Wave Pulse Duration - t
p
(microsec)
100
1000
10000
10 100 1000 10000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
Current
monitor
High-speed
switch
D.U.T.
R
g
= 25 Ω
+
Freewheel
diode
V
d
= 25 V
L
IRFP460
40HFL40S02