Typical Characteristics T J = 25 °C unless otherwise noted
2
1
DUTY CYCLE-DESCENDING ORDER
D = 0.5
0.2
0.1
0.1
0.05
0.02
P DM
0.01
t 1
0.01
NOTES:
t 2
R θ JC =1.75 C/W
SINGLE PULSE
o
DUTY FACTOR: D = t 1 /t 2
PEAK T J = P DM x Z θ JC x R θ Jc + T C
10
10
10
10
10
10
0.001
-6
-5
-4
-3
-2
-1
1
t, RECTANGULAR PULSE DURATION (sec)
Figure 13. Junction-to-Case Transient Thermal Response Curve
2
1
DUTY CYCLE-DESCENDING ORDER
D = 0.5
0.2
0.1
0.1
0.05
0.02
P DM
0.01
t 1
R θ JA = 62.5 C/W
0.01
SINGLE PULSE
o
NOTES:
DUTY FACTOR: D = t 1 /t 2
t 2
( Note 1b )
PEAK T J = P DM x Z θ JA x R θ JA + T A
10
10
10
10
0.001
-4
-3
-2
-1
1
10
100
1000
t, RECTANGULAR PULSE DURATION (sec)
Figure 14. Junction-to-Ambient Transient Thermal Response Curve
?2009 Fairchild Semiconductor Corporation
FDB3860 Rev . C
5
www.fairchildsemi.com
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