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2SK3069
Rev.11.00 Sep 07, 2005 page 5 of 7
Pulse Width PW (S)
Normalized Transient Thermal Impedance γ
s
(t)
Normalized Transient Thermal Impedance vs. Pulse Width
Channel Temperature Tch (°C)
Repetitive Avalanche Energy E
AR
(mJ)
Maximum Avalanche Energy vs.
Channel Temperature Derating
Source to Drain Voltage V
SD
(V)
Reverse Drain Current I
DR
(A)
Reverse Drain Current vs.
Source to Drain Voltage
D. U. T
Rg
I
AP
Monitor
V
DS
Monitor
V
DD
50 Ω
Vin
15 V
0
I
D
V
DS
I
AP
V
(BR)DSS
L
V
DD
E
AR
= • L • I
AP
2
•
2
1
V
DSS
V
DSS
– V
DD
Avalanche Test Circuit Avalanche Waveform
0
0.4 0.8 1.2 1.6 2.0
Pulse Test
V
GS
= 0, –5 V
5 V
10 V
100
80
60
40
20
250
200
150
100
50
25 50 75 100 125 150
0
I
AP
= 50 A
V
DD
= 25 V
duty < 0.1 %
Rg > 50 Ω
3
1
0.3
0.1
0.03
0.01
10 µ
100 µ 1 m 10 m
100 m 1 10
DM
P
PW
T
D =
PW
T
ch – c(t) = s (t) • ch – c
ch – c = 1.25°C/W, Tc = 25°C
θ γ θ
θ
Tc = 25°C
D = 1
0.5
0.2
0.1
0.05
0.02
0.01
1shot pulse