2SA1084, 2SA1085
Base to Emitter Saturation Voltage
vs. Collector Current
Gain Bandwidth Product vs.
Collector Current
2,000
1,000
500
–10
–5
IC = 10 IB
VCE = –12 V
–2
–1.0
–0.5
200
100
50
–0.2
–0.1
20
–1
–2
–5 –10 –20
–50 –100
–1
–2
–5 –10 –20
–50 –100
Collector Current IC (mA)
Collector Current IC (mA)
Collector Output Capacitance vs.
Collector to Base Voltage
Contours of Constant Noise Figure (1)
100
50
100
VCE = –6 V
f = 1 kHz
IE = 0
f = 1 MHz
30
10
20
10
5
3
1.0
NF = 0.5 dB
1
0.3
0.1
2
4
6
2
1
0.03
0.01
10
–0.01–0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
–0.5 –1.0 –2
–5 –10 –20
–50
Collector to Base Voltage VCB (V)
Collector Current IC (mA)
Contours of Constant Noise Figure (3)
Contours of Constant Noise Figure (2)
100
100
VCE = –6 V
f = 120 Hz
VCE = –6 V
f = 10 Hz
30
10
30
10
3
3
NF = 0.5 dB
1.0
1.0
NF = 0.5 dB
1
2
4 6 10
0.3
0.1
0.3
0.1
1
2 4 6
10
0.03
0.01
0.03
0.01
–0.01–0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
–0.01–0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector Current IC (mA)
Collector Current IC (mA)
Rev.3.00 Aug 10, 2005 page 4 of 5
RENESAS [ RENESAS TECHNOLOGY CORP ]
