2SA1978 Datasheet, PDF (4/10 Pages) NEC – PNP EPITAXIAL SILICON TRANSISTOR MICROWAVE AMPLIFIER

FEED-BACK CAPACITANCE vs.
COLLECTOR TO BASE VOLTAGE
2
f = 1 MHz
1.5
1
0.5
0
1
10
100
VCBO - Collector to Base Voltage - V
DC CURRENT GAIN vs.
100
COLLECTOR CURRENT
VCE = –3 V
VCE = –2 V
VCE = –1 V
10
NE97833 / 2SA1978
INSERTION GAIN vs. FREQUENCY
30
20
VCE = –10 V
IC = –15 mA
10
0
VCE = 1 V
IC = –5 mA
–10
100
200 300 500
1000
f - Frequency - MHz
3000
DC CURRENT GAIN vs.
100
COLLECTOR CURRENT
VCE = –10 V
10
1
–0.1
–1
–10
–100
–1000
Ic - Collector Current - mA
1
–0.1
–1
–10
–100
Ic - Collector Current - mA
–1000
4