2SC1342
Small Signal y Parameters
(V
CE
= 6V, I
C
= 1 mA, Emitter Common Ta = 25°C)
Item
Input admittance
Reverse transfer admittance
Forward transfer admittance
Output admittance
Symbol
yie
yre
yfe
yoe
f = 50 MHz
1.8 + j5.5
–0.022 – j0.26
34 – j12
0.1 + j0.5
f = 100 MHz
4.3 + j9.9
–0.04 – j0.52
28 – j19
0.15 + j0.9
f = 200 MHz
11.5 + j15.25
–0.105 – j0.96
15.5 – j25
0.21 + j1.45
Unit
mS
Input Admittance vs. Frequency
28
Input Suceptance b
ie
(mS)
24
20
16
12
8
70
f = 50 MHz
5 mA
3 mA
2 mA
100
200
300
y
ie
= g
ie
+ jb
ie
V
CE
= 6 V
Reverse Transfer Admittance vs. Frequency
Reverse Transfer Conductance g
re
(mS)
–0.3
–0.25
–0.2
–0.15
–0.1
–0.05
0
Reverse Transfer Suceptance b
re
(mS)
0.6
f = 50 MHz
y
re
= g
re
+ jb
re
V
CE
= 6 V
70
100
–0.4
–0.8
200
I
C
= 5 mA
300
42
–2.0
32 1
–1.2
4 I
C
= 1 mA
0
6
12 18 24 30 36
Input Conductance g
ie
(mS)
–1.6
Forward Transfer Admittance vs. Frequency
Forward Transfer Conductance g
fe
(mS)
Output Suceptance b
oe
(mS)
Forward Transfer Suceptance b
fe
(mS)
–20
0
–20
0
20
40
I
C
= 1 mA
2
3
300
–60
200
100
–80
70
5
f = 50 MHz
0
–100
60
80
100
3.0
2.5
2.0
1.5
1.0
0.5
Output Admittance vs. Frequency
y
fe
= g
fe
+ jb
fe
V
CE
= 6 V
y
oe
= g
oe
+ jb
oe
V
CE
= 6 V
300
–40
200
100
70
f = 50 MHz
I
C
= 1 mA 2
3
5
0.1
0.2
0.3
0.4
0.5
Output Conductance g
oe
(mS)
6
HITACHI [ HITACHI SEMICONDUCTOR ]
