IRFR3518/IRFU3518
RD
40
30
20
10
0
VDS
LIMITED BY PACKAGE
VGS
D.U.T.
RG
+VDD
-
VGS
Pulse Width ≤ 1 µs
Duty Factor ≤ 0.1 %
Fig 10a. Switching Time Test Circuit
V
DS
90%
25
50
75
100
125
150
175
°
, Case Temperature ( C)
T
C
10%
V
GS
t
t
r
t
t
f
Fig 9. Maximum Drain Current Vs.
d(on)
d(off)
Case Temperature
Fig 10b. Switching Time Waveforms
10
1
D = 0.50
0.20
0.10
0.05
P
DM
0.1
t
1
SINGLE PULSE
0.02
0.01
(THERMAL RESPONSE)
t
2
Notes:
1. Duty factor D =
t
/ t
1
2
2. Peak T
= P
x
Z
+ T
J
DM
thJC
C
0.01
0.00001
0.0001
0.001
0.01
0.1
1
t , Rectangular Pulse Duration (sec)
1
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Case
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KERSEMI [ Kersemi Electronic Co., Ltd. ]
