2N2857 데이터 시트보기 (PDF) - Semelab - > TT Electronics plc
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2N2857 Datasheet PDF : 2 Pages
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2N2857
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise stated)
Parameter
Test Conditions
Min.
V(BR)CBO* Collector – Base Breakdown Voltage IC = 1µA
IE = 0
30
V(BR)CEO Collector – Emitter Breakdown Voltage IC = 3mA
IB = 0
15
V(BR)EBO Emitter – Base Breakdown Voltage
IE = 10µA IC = 0
2.5
ICBO
Collector – Base Cut-off Current
VCB = 15V
IE = 0
Tamb= 150°C
hFE
DC Current Gain
VCE = 1V
IC = 3mA
30
NF
Noise Figure
VCE = 6V IC = 1.5mA
f = 450MHz RG = 50Ω
CEBO
Emitter Base Capacitance
VEB = 0.5V IC = 0
f = 1 MHz
Gpe
Power Gain (Neutralised)
rbB’C’b’c Feedback Time Constant
VCE = 6V
f = 450MHz
VCB = 6V
f = 31.9MHz
IC = 1.5mA
RG = 50Ω
IC = 2mA
12.5
4
fT
Transition Frequency
VCE = 6V
IC = 5mA
1
f = 100 MHz
Cre
Reverse Capacitance
VCE = 10V
f = 1 MHz
IC = 0
Pc
Oscillator Power Output
VCB = 10V IC = 12mA
30
f = 500MHz
Typ.
3.8
1.4
7
0.6
Max. Unit
V
10
nA
1
µA
150 —
4.5
dB
pF
19
dB
15
ps
1.9 GHz
1
pF
mW
Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. e-mail sales@semelab.co.uk
Website http://www.semelab.co.uk
Prelim. 7/98
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