2SK1807
Power vs. Temperature Derating
80
50
20
10
5
2
1
0.5
0.2
0.1
0.05
1
Maximum Safe Operation Area
10
Drain Current I
D
(A)
Pch (W)
60
40
20
10
0
n is on)
PW
µ
s
tio ea (
1
ra ar
DS
m
=
D
R
pe
s
10
C
O this by
O
m
pe
s
in ited
(1
ra
m
tio
li
Sh
n
ot
(T
)
c
=
25
°C
)
µ
s
Channel Dissipation
Ta = 25°C
3
10
30
100 300 1000
0
50
100
Case Temperature
150
Tc (°C)
200
Drain to Source Voltage V
DS
(V)
Normalized Transient Thermal Impedance vs. Pulse Width
Normalized Transient Thermal Impedance
γ
s (t)
3
D=1
0.5
0.3
0.2
0.1
0.1
0.05
0.02
0.03
0.01
10
µ
0.01
1 shot Pulse
100
µ
1m
10 m
Pulse Width PW (S)
100 m
θ
ch – c(t) =
γ
s(t) .
θ
ch – c
θ
ch – c = 2.08°C / W, Tc = 25°C
PW
D= T
P
DM
T
PW
Tc = 25°C
1.0
1
10
3
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