120NQ...(R) Series
Bulletin PD-2.224 rev. D 07/04
160
Allowable Case T
emperature - (°C)
150
100
90
Average Power Loss - (Wat ts)
80
70
60
50
40
30
20
10
0
0
140
130
120
110
100
90
see note (2)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
RMSLimit
DC
DC
S
quare wave (D = 0.50)
80% Rated V
R
applied
80
0
20 40 60 80 100 120 140 160 180
Average Forward Current - I
F(AV)
(A)
20 40 60 80 100 120 140 160 180
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Maximum Allowable Case Temperature
Vs. Average Forward Current
100000
Non-Repetitive Surge Current - I
FS
(A)
M
At Any Rated Load Condition
And With Rated V
RRM
Applied
Following S
urge
Fig. 6 - Forward Power Loss Characteristics
10000
1000
10
100
1000
10000
S
quare Wave Pulse Duration - t p (micros
ec)
Fig. 7 - Maximum Non-Repetitive Surge Current
L
HIGH-S
PEED
S CH
WIT
FREE-WHEEL
DIODE
40HF
L40S
02
+
DUT
IR
FP460
R = 25 ohm
g
Vd = 25 Volt
CURR
ENT
MONIT
OR
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
= 80% rated V
R
4
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