Transistor
PC — Ta
1.6
Printed circut board: Copper
1.4
foil area of 1cm2 or more, and
the board thickness of 1.7mm
for the collector portion.
1.2
1.0
0.8
0.6
0.4
0.2
0
0 20 40 60 80 100 120 140 160
Ambient temperature Ta (˚C)
hFE — IC
500
VCE=–2V
450
400
350
300
250
Ta=100˚C
200
25˚C
150
–25˚C
100
50
0
– 0.01 – 0.03 – 0.1 – 0.3 –1 –3 –10
Collector current IC (A)
Cob — VCB
240
IE=0
f=1MHz
Ta=25˚C
200
160
120
80
40
0
–1
–3
–10
–30
–100
Collector to base voltage VCB (V)
IC — VCE
–6
Ta=25˚C
–5
IB=–50mA –45mA
–40mA
–35mA
–4
–30mA
–25mA
–3
–20mA
–15mA
–2
–10mA
–1
–5mA
0
0 –1 –2 –3 –4 –5 –6
Collector to emitter voltage VCE (V)
–100
–30
–10
VCE(sat) — IC
IC/IB=30
–3
–1
– 0.3
– 0.1
Ta=100˚C
25˚C
–25˚C
– 0.03
– 0.01
– 0.01 – 0.03 – 0.1 – 0.3 –1 –3 –10
Collector current IC (A)
2SB1398
IC — VBE
–10
VCE=–2V
–9
–8
–7
25˚C
Ta=100˚C
–25˚C
–6
–5
–4
–3
–2
–1
0
0 – 0.4 – 0.8 –1.2 –1.6 –2.0
Base to emitter voltage VBE (V)
fT — IE
240
VCB=–6V
Ta=25˚C
200
160
120
80
40
0
1 3 10 30 100 300 1000
Emitter current IE (mA)
2