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2SC3978 Datasheet, PDF (3/3 Pages) Panasonic Semiconductor – Silicon NPN triple diffusion planar type(For high breakdown voltage high-speed switching) | |||
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Power Transistors
2SC3978, 2SC3978A
Area of safe operation, reverse bias ASO
4.0
3.5
ICP
3.0
Lcoil=100µH
IC/IB=5
(IB1=âIB2)
TC=25ËC
2.5
2.0
IC
1.5
1.0
0.5
0
0 200 400 600 800 1000 1200 1400 1600
Collector to emitter voltage VCE (V)
Reverse bias ASO measuring circuit
T.U.T
IB1
IC
Vin
âIB2
tW
L coil
VCC
Vclamp
10000
1000
Rth(t) â t
Note: Rth was measured at Ta=25ËC and under natural convection.
(1) PT=10V Ã 0.2A (2W) and without heat sink
(2) PT=10V Ã 1.0A (10W) and with a 100 Ã 100 Ã 2mm Al heat sink
100
(1)
(2)
10
1
0.1
10â4
10â3
10â2
10â1
1
10
102
103
104
Time t (s)
3
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