
Cob VCB
12
IE = 0
f = 1 MHz
Ta = 25°C
10
8
6
4
2
0
1
10
100
Collector-base voltage VCB (V)
2SD1991A
NV IC
240
VCE = 10 V
Ta = 25°C
Function = FLAT
200
160
Rg = 100 kΩ
120
80
22 kΩ
40
4.7 kΩ
0
10
100
1 000
Collector current IC (µA)
h parameter IC
100
VCE = 5 V
f = 270 Hz
10
hfe (× 100)
1
hoe (10−1 µS)
hre (× 10−4)
hie (× 10 kΩ)
1
0.1
1
10
Collector current IC (mA)
SJC00234BED
3