2SD1821A 2 SJC00425AED
This product complies with the RoHS Directive (EU 2002/95/EC).
VCE(sat) IC hFE IC fT IE
0 16040 12080
0
240
200
160
120
80
40
Collector power dissipation PC (mW)
Ambient temperature Ta (°C)
0 121082 64
0
120
100
80
60
40
20
Ta = 25°C
1.8 mA
1.6 mA
1.4 mA
1.2 mA
1.0 mA
0.8 mA
0.6 mA
0.4 mA
0.2 mA
IB = 2.0 mA
Collector current IC (mA)
Collector-emitter voltage VCE (V)
0.1 1 10 100
0.01
0.1
1
10
100 IC / IB = 10
25°C
−25°C
Ta = 75°C
Collector-emitter saturation voltage VCE(sat) (V)
Collector current IC (mA)
0.1 1 10 100
0
600
500
400
300
200
100
VCE = 10 V
Ta = 75°C
25°C
−25°C
Forward current transfer ratio hFE
Collector current IC (mA)
−1−10 −100
0
200
160
120
80
40
VCB = 10 V
Ta = 25°C
Transition frequency fT (MHz)
Emitter currentIE (mA)
1 10 100
0
5
4
3
2
1
Collector-base voltage VCB (V)
IE = 0
f = 1 MHz
Ta = 25°C
Collector output capacitance
(Common base, input open circuited) Cob (pF)
0 2.01.60.4 1.20.8
0
120
100
80
60
40
20
VCE = 10 V
Ta = 75°C−25°C
25°C
Base-emitter voltage VBE (V)
Collector current IC (mA)
Cob VCB