2SH26
Normalized Transient Thermal Impedance vs. Pulse Width
3
1
D=1
Tc = 25°C
0.5
0.3
0.2
0.1
0.1
0.05
0.03
0.02
0.011shot
pulse
0.01
10 µ
100 µ
θch – c(t) = γ s (t) • θ ch – c
θch – c = 2.5 °C/W, Tc = 25 °C
PDM
PW
T
D=
PW
T
1m
10 m
100 m
1
10
Pulse Width PW (S)
Switching Time Test Circuit
Ic Monitor
Vin Monitor
VCE
Monitor
Rg
D.U.T.
Vin ± 15 V
RL
VCC
0
Vin
Waveform
10%
90%
VCE
90%
td(on)
10%
tr
ton
90%
Ic
10%
td(off)
tf
toff