2SA2021G
2 SJC00426BED

This product complies with the RoHS Directive (EU 2002/95/EC).

IC VBE VCE(sat) IC hFE IC
0 40 12080
0
140
40
60
20
100
120
80
2SA2021G_PC-Ta

Collector power dissipation PC (mW)

Ambient temperature Ta (°C)

0−4−8−12
0
−10
−20
−30
−40
−50
−60
−70
2SA2021G_IC-VCE
Collector current IC (mA)

Collector-emitter voltage VCE (V)

Ta = 25°C
−50 µA
−100 µA
−150 µA
−200 µA
−250 µA
IB = −300 µA
0− 0.2 − 0.6 − 0.8− 0.4 −1.0
0
−20
−40
−60
−80
−100
−120
−140
2SA2021G_IC-IB
Collector current IC (mA)

Base current IB (V)

VCE = −10 V
Ta = 25°C
0
− 0.4− 0.2 − 0.8 −1.0− 0.6 −1.2 −1.4
0
−30
−40
−50
−20
−10
−60
−70
−80
−90
−100
2SA2021G_IC-VBE
Collector current IC (mA)

Base-emitter voltage VBE (V)

VCE = −10 V
Ta = 85°C
25°C
−25°C
− 0.1 −1−10 −100
− 0.01
− 0.1
−1
Collector current IC (mA)

Collector-emitter saturation voltage VCE(sat) (V)

2SA2021G_VCE(sat)-IC
IC /IB = 10
Ta = 85°C
25°C
−25°C
−1−10 −100
−1
000
0
300
350
250
50
100
200
150
Collector current IC (mA)
Forward current transfer ratio hFE
2SA2021G_hFE-IC
VCE = −10 V
Ta = 85°C
25°C
−25°C
0−8−24−16 −32 −40
1
100
10

Collector-base voltage VCB (V)

2SA2021G_Cob-VCB

Collector output capacitance

(Common base, input open circuited) Cob (pF)

f = 1 MHz
Ta = 25°C
Cob VCB
PC Ta IC VCE IC IB