2SC4988
Main Characteristics
Collector Power Dissipation Curve
Collector Power Dissipation Pc (mW)
(on the alumina ceramic board)
1600
200
DC Current Transfer Ratio
vs. Collector Current
DC Current Transfer Ratio h
FE
V
CE
= 5V
160
1200
120
800
80
400
40
0
0
50
100
150
200
1
2
5
10
20
50
100
Ambient Temperature Ta (°C)
Collector Current I
C
(mA)
Collector Output Capacitance vs.
Collector to Base Voltage
1.8
I
E
= 0
f = 1 MHz
1.6
12
V
CE
= 5 V
10
8
6
4
2
0
1
2
5
10
20
50
100
Collector Output Capacitance C
ob
(pF)
Gain Bandwidth Product
vs. Collector Current
Gain Bandwidth Product f
T
(GHz)
1.4
1.2
1.0
0.8
0.5
1
2
5
10
20
Collector Current I
C
(mA)
Collector to Base Voltage V
CB
(V)
Power Gain vs. Collector Current
20
5
V
CE
= 5V
f = 900 MHz
16
Noise Figure vs. Collector Current
V
CE
= 5V
f = 900MHz
4
Power Gain PG (dB)
12
NF (dB)
Noise Figure
3
8
2
4
0
1
2
5
10
20
50
100
1
0
1
2
5
10
20
50
100
Collector Current I
C
(mA)
Collector Current I
C
(mA)
Rev.3.00 Aug 10, 2005 page 3 of 7
RENESAS [ RENESAS TECHNOLOGY CORP ]
