2SK1157, 2SK1158
Reverse Drain Current vs.
Source to Drain Voltage
20
Reverse Drain Current I
DR
(A)
Pulse Test
16
12
8
4
5, 10 V
V
GS
= 0, –10 V
0
0.8
2.0
0.4
1.2
1.6
Source to Drain Voltage V
SD
(V)
Normalized Transient Thermal Impedance
γ
S
(t)
Normalized Transient Thermal Impedance vs. Pulse Width
3
T
C
= 25°C
1.0
D=1
0.5
0.3
0.1
0.2
0.1
0.05
0.02
0.03
θch–c
(t) =
γ
S
(t) ·
θch–c
θch–c
= 2.08°C/W, T
C
= 25°C
P
DM
PW
1
D = PW
T
1
0.01
10
µ
0.01
ulse
P
ot
Sh
100
µ
1m
10 m
Pulse Width PW (s)
100 m
T
10
6