2SK1775
Reverse Drain Current vs.
Source to Drain Voltage
10
Reverse Drain Current I
DR
(A)
Pulse Test
8
6
4
2
5 V, 10 V
V
GS
= 0, –5 V
0
0
0.4
0.8
1.2
1.6
2.0
Source to Drain Voltage V
SD
(V)
Normalized Transient Thermal Impedance
γ
S
(t)
Normalized Transient Thermal Impedance vs. Pulse Width
3
D=1
0.5
0.3
0.1
0.2
0.1
0.05
T
C
= 25°C
1.0
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
0.03
0.01
10
µ
0.02
0.01
e
Puls
hot
1S
100
µ
1m
10 m
100 m
T
10
Pulse Width PW (S)
Switching Time Test Circuit
Vin Monitor
Waveforms
90%
Vout Monitor
Vin
D.U.T
10%
10%
90%
90%
t
d (off)
t
f
10%
R
L
50
Ω
Vin
10 V
V
DD
.
= 30 V
.
Vout
t
d (on)
t
r
Rev.2.00 Sep 07, 2005 page 5 of 6