2SA1084, 2SA1085
Base to Emitter Saturation Voltage
vs. Collector Current
I
C
= 10 I
B
Gain Bandwidth Product vs.
Collector Current
Gain bandwidth product f
T
(MHz)
Base to emitter saturation voltage
V
BE(sat)
(V)
–10
–5
2,000
V
CE
= –12 V
1,000
500
–2
–1.0
–0.5
200
100
50
–0.2
–0.1
–1
–2
–5
–10
–20
–50 –100
20
–1
–2
–5
–10 –20
–50 –100
Collector Current I
C
(mA)
Collector Output Capacitance vs.
Collector to Base Voltage
Collector Current I
C
(mA)
Contours of Constant Noise Figure (1)
Collector output capacitance C
ob
(pF)
Singnal source resistance R
g
(kΩ)
100
50
I
E
= 0
f = 1 MHz
100
30
10
3
1.0
0.3
0.1
0.03
NF = 0.5 dB
V
CE
= –6 V
f = 1 kHz
20
10
5
1
2
4
6
2
1
–0.5 –1.0
–2
–5
–10
–20
–50
10
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector to Base Voltage V
CB
(V)
Collector Current I
C
(mA)
Contours of Constant Noise Figure (2)
Contours of Constant Noise Figure (3)
Singnal source resistance R
g
(kΩ)
30
10
3
1.0
0.3
0.1
0.03
NF = 0.5 dB
V
CE
= –6 V
f = 120 Hz
Singnal source resistance R
g
(kΩ)
100
100
30
10
3
1.0
0.3
0.1
0.03
1
2
NF = 0.5 dB
V
CE
= –6 V
f = 10 Hz
4 6 10
1 2 4 6
10
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
0.01
–0.01 –0.03 –0.1 –0.3 –1.0 –3 –10 –30 –100
Collector Current I
C
(mA)
Collector Current I
C
(mA)
Rev.3.00 Aug 10, 2005 page 4 of 5
RENESAS [ RENESAS TECHNOLOGY CORP ]
