2SK1808
Power vs. Temperature Derating
60
Channel Dissipation Pch (W)
10
3
1
0.3
0.1
Maximum Safe Operation Area
n is n)
tio ea (o
S
ra r
pe is a y R
D
O th b
in ited
lim
10
µ
s
)
)
µ
s
ot
0
°C
Sh
10
25
(1
=
s
c
m
(T
n
10
tio
=
ra
pe
O
Drain Current I
D
(A)
PW
1
m
s
C
D
40
20
0.03
0.01
0
50
100
150
1
Ta = 25°C
3
10
30
100 300 1000
Case Temperature Tc (°C)
Drain to Source Voltage V
DS
(V)
Normalized Transient Thermal Impedance vs. Pulse Width
Normalized Transient Thermal Impedance
γ
s (t)
3
D=1
1.0
0.5
0.3
0.2
0.1
0.1
0.05
0.02
0.03
0.01
0.01
10
µ
1 shot Pulse
100
µ
1m
10 m
Pulse Width PW (S)
100 m
1
10
θ
ch – c(t) =
γ
s(t) .
θ
ch – c
θ
ch – c = 3.57°C / W. Tc = 25°C
PW
D= T
P
DM
T
PW
Tc = 25°C
3
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