2SK1831, 2SK1832
Power vs. Temperature Derating
75
Channel Dissipation Pch (W)
Maximum Safe Operation Area
50
30
10
Drain Current I
D
(A)
10
D
C
50
3
1
0.3
0.1
0.05
25
=
10
O
m
pe
s
ra
(1
tio
sh
n
ot
(T
Operation in this
)
c
=
area is limited
25
°C
by R
DS
(on)
)
s
m
PW
µ
10
µ
s
0
s
1
Ta = 25°C
K1831
K1832
30
100
300 1000
0
50
100
150
1
3
10
Case Temperature Tc (°C)
Drain to Source Voltage V
DS
(V)
Normalized Transient Thermal Impedance
γ
s (t)
Normalized Transient Thermal Impedance vs. Pulse Width
3
1
D=1
0.5
0.3
0.1
0.2
0.1
0.05
0.02
0.01
θch
– c(t) =
γ
s(t).
θ
ch – c
θ
ch – c = 2.50°C/W, Tc = 25°C
P
DM
0.03
0.01
10 µ
P
hot
1S
ulse
PW
T
PW
D = ——
T
1
10
100 µ
1m
10 m
100 m
Pulse Width PW (S)
3
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