Transistor
PC — Ta
1.4
Printed circut board: Copper
foil area of 1cm2 or more, and
1.2
the board thickness of 1.7mm
for the collector portion.
1.0
0.8
0.6
0.4
0.2
0
0 20 40 60 80 100 120 140 160
Ambient temperature Ta (˚C)
VCE(sat) — IC
10
IC/IB=100
3
1
Ta=75˚C
0.3
25˚C
–25˚C
0.1
0.03
0.01
0.003
0.001
0.01 0.03 0.1 0.3 1 3 10
Collector current IC (A)
Cob — VCB
120
IE=0
f=1MHz
Ta=25˚C
100
80
60
40
20
0
1
3
10
30
100
Collector to base voltage VCB (V)
IC — VCE
1.2
Ta=25˚C
1.0
IB=3.5mA
0.8
3.0mA
2.5mA
0.6
2.0mA
1.5mA
0.4
1.0mA
0.2
0
0 2 4 6 8 10 12
Collector to emitter voltage VCE (V)
hFE — IC
600
VCE=2V
500
400
Ta=75˚C
300
25˚C
–25˚C
200
100
0
0.01 0.03 0.1 0.3 1 3 10
Collector current IC (A)
2SD2357
IC — VBE
1.2
25˚C
1.0
Ta=75˚C –25˚C
0.8
VCE=2V
0.6
0.4
0.2
0
0 0.4 0.8 1.2 1.6 2.0 2.4
Base to emitter voltage VBE (V)
fT — IE
240
VCB=5V
f=200MHz
Ta=25˚C
200
160
120
80
40
0
–1 –3 –10 –30 –100 –300 –1000
Emitter current IE (mA)
2