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2SC4957 Datasheet(PDF) 3 Page - NEC

Part No. 2SC4957
Description  HIGH FREQUENCY LOW NOISE AMPLIFIER NPN SILICON EPITAXIAL TRANSISTOR 4 PINS MINI MOLD
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Maker  NEC [NEC]
Homepage  http://www.nec.com/
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3
2SC4957
COLLECTOR CURRENT vs.
COLLECTOR TO EMITTER VOLTAGE
VCE ā€“ Collector to Emitter Voltage ā€“ V
DC CURRENT GAIN vs.
COLLECTOR CURRENT
IC ā€“ Collector Current ā€“ mA
GAIN BANDWIDTH PRODUCT
vs. COLLECTOR CURRENT
IC ā€“ Collector Current ā€“ mA
INSERTION POWER GAIN
vs. COLLECTOR CURRENT
IC ā€“ Collector Current ā€“ mA
f = 2 GHz
f = 2 GHz
1
60
0
1
500 A
400 A
300 A
200 A
IB = 100 A
50
40
30
20
10
2
3
4
5
6
12
0.1
200
100
0
0.2
0.5 1
2
5
10 20
50 100
5 V
VCE = 3 V
14
0.5
12
10
8
6
4
2
1
2
5
10
20
50
5 V
3 V
VCE = 1 V
5 V
3 V
VCE = 1 V
10
8
6
4
2
5
10
20
50
Āµ
Āµ
Āµ
Āµ
Āµ
NOISE FIGURE vs.
COLLECTOR CURRENT
IC ā€“ Collector Current ā€“ mA
FEED-BACK CAPACITANCE vs.
COLLECTOR TO BASE VOLTAGE
VCB ā€“ Collector to Base Voltage ā€“ V
0.1
0.5
4
0.5
3
2
1
0
1
2
5
10
20
50
0.2
0.3
0.4
0.5
1
2
5
10
20
f = 2 GHz
VCE = 3 V
f = 1 MHz




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2SC4956HIGH FREQUENCY LOW NOISE AMPLIFIER NPN SILICON EPITAXIAL TRANSISTOR 4 PINS MINI MOLD 1 2 3 4 5 MoreNEC
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