2SC4126
Silicon NPN Epitaxial
Application
VHF and UHF wide band amplifier
Outline
MPAK-4
2
3
1
4
1. Collector
2. Emitter
3. Base
4. Emitter
2SC4126
Absolute Maximum Ratings
(Ta = 25°C)
Item
Collector to base voltage
Collector to emitter voltage
Emitter to base voltage
Collector current
Collector power dissipation
Junction temperature
Storage temperature
Symbol
V
CBO
V
CEO
V
EBO
I
C
P
C
Tj
Tstg
Ratings
15
11
2
50
150
150
–55 to +150
Unit
V
V
V
mA
mW
°C
°C
Electrical Characteristics
(Ta = 25°C)
Item
Collector to base breakdown
voltage
Collector cutoff current
Symbol
V
(BR)CBO
I
CBO
I
CEO
Emitter cutoff current
DC current transfer ratio
Collector output capacitance
Gain bandwidth product
Power gain
Noise figure
Note: Marking is “MI–”.
I
EBO
h
FE
Cob
f
T
PG
NF
Min
15
—
—
—
50
—
4.5
9.0
—
Typ
—
—
—
—
—
1.0
6.0
11.0
1.5
Max
—
1
1
1
250
1.5
—
—
3.0
pF
GHz
dB
dB
Unit
V
µA
µA
µA
Test conditions
I
C
= 10
µA,
I
E
= 0
V
CB
= 12 V, I
E
= 0
V
CE
= 10 V, R
BE
=
∞
V
EB
= 1 V, I
C
= 0
V
CE
= 5 V, I
C
= 20 mA
V
CB
= 5 V, I
E
= 0, f = 1 MHz
V
CE
= 5 V, I
C
= 20 mA
V
CE
= 5 V, I
C
= 20 mA,
f = 900 MHz
V
CE
= 5 V, I
C
= 5 mA,
f = 900 MHz
2
2SC4126
Maximum Collector Dissipation Curve
Collector Power Dissipation P
C
(mW)
150
Collector Current I
C
(mA)
Typical Output Characteristics
20
Pulse
150
125
16
100
12
100
8
75
50
50
4
I
B
= 25
µA
0
50
100
150
Ambient Temperature Ta (°C)
0
2
4
6
8
10
Collector to Emitter Voltage V
CE
(V)
DC Current Transfer Ratio vs.
Collector Current
200
Gain Bandwidth Product f
T
(GHz)
DC Current Transfer Ratio h
FE
V
CE
= 5 V
Pulse
10
Gain Bandwidth Product vs. Collector
Current
V
CE
= 5 V
8
160
120
6
80
4
40
2
0
1
2
5
10
20
Collector Current I
C
(mA)
50
0
1
2
5
10
20
Collector Current I
C
(mA)
50
3
2SC4126
Collector Output Capacitance vs.
Collector to Base Voltage
Collector Output Capacitance C
ob
(pF)
2.0
I
E
= 0
f = 1 MHz
1.6
Power Gain PG (dB)
16
20
V
CE
= 5 V
f = 900 MHz
Power Gain vs. Collector Current
1.2
12
0.8
8
0.4
4
0
1
2
5
10
20
50
Collector to Base Voltage V
CB
(V)
0
1
2
5
10
20
Collector Current I
C
(mA)
50
Noise Figure vs. Collector Current
5
V
CE
= 5 V
f = 900 MHz
Noise Figure NF (dB)
4
3
2
1
0
1
2
5
10
20
Collector Current I
C
(mA)
50
4
2SC4126
S Parameters
(Emitter Common)
Test condition
V
CE
= 5 V, Z
O
= 50
Ω,
Freq. = 100 to 1000 MHz (100 MHz Step)
S11-Frequency
0.8
0.6
0.4
3
0.2
1000 MHz
0
0.2
0.6 0.8 1
1.5 2
3 4 5
10
4
5
10
∞
–10
I
C
= 20 mA
–0.2
100 MHz
–5
–4
–3
–180°
150°
I
C
= 20 mA
100 MHz
I
C
= 5 mA
1000 MHz
0°
30°
1
1.5
2
120°
S21-Frequency
90°
Scale : 10/div
60°
–150°
–30°
–0.4
–0.6
–0.8
–1
I
C
= 5 mA
–2
–1.5
–120°
–90°
–60°
S12-Frequency
90°
120°
Scale : 0.4/div
60°
0.4
150°
1000 MHz
I
C
= 20 mA
I
C
= 5 mA
–180°
100 MHz
0° 0
0.2
0.6
S22 -Frequency
0.8
1
1.5
2
3
30°
0.2
4
5
10
0.4 0.6 0.8 1
1000 MHz
1.5 2
3 4 5
10
∞
I
C
= 5 mA –10
–0.2
–150°
–30°
–0.4
–2
–120°
–90°
–60°
–0.6
–0.8
–1
–1.5
I
C
= 20 mA 100 MHz
–5
–4
–3
5
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