MECHANICAL DATA Dimensions (inches) 4.95 (0.195) 4.52 (0.178) 4.9

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MECHANICAL DATA Dimensions (inches) 4.95 (0.195) 4.52 (0.178) 4.9

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2N2857
MECHANICAL DATA Dimensions (inches)
4.95 (0.195) 4.52 (0.178) 4.95 (0.195) 4.52 (0.178)
TRANSISTOR
5.33 (0.210) 4.32 (0.170)
FEATURES
SILICON TRANSISTOR
12.7 (0.500) min.
0.48 (0.019) 0.41 (0.016) dia.
APPLICATIONS:
AMPLIFIER, OSCILLATOR CONVERTER APPLICATIONS 500MHz
2.54 (0.100) Nom.
TO-72 METAL PACKAGE
ABSOLUTE MAXIMUM RATINGS 25°C unless otherwise stated)
VCBO VCEO VEBO TSTG Collector Base Voltage Collector Emitter Voltage Emitter Base Voltage Collector Current Total Device Dissipation =25°C Total Device Dissipation =25°C Operating Storage Temperature Range 2.5V 40mA 200mW 300mW 200°C
Semelab plc.
Telephone +44(0)1455) 556565. +44(0)1455) 552612. e-mail sales@semelab.co.uk Website http://www.semelab.co.uk
Prelim. 7/98
2N2857
ELECTRICAL CHARACTERISTICS
Parameter
V(BR)CBO* V(BR)CEO V(BR)EBO ICBO CEBO rbB'C'b'c Collector Base Breakdown Voltage Emitter Base Breakdown Voltage Collector Base Cut-off Current Current Gain Noise Figure Emitter Base Capacitance Power Gain (Neutralised) Feedback Time Constant Transition Frequency
25°C unless otherwise stated)
Test Conditions
10µA 450MHz 0.5V 450MHz 31.9MHz 500MHz 12mA 1.5mA Tamb= 150°C 1.5mA
Min.
Typ.
Max. Unit
Collector Emitter Breakdown Voltage
12.5
Reverse Capacitance Oscillator Power Output
Semelab plc.
Telephone +44(0)1455) 556565. +44(0)1455) 552612. e-mail sales@semelab.co.uk Website http://www.semelab.co.uk
Prelim. 7/98

MECHANICAL DATA Dimensions (inches) 4.95 (0.195) 4.52 (0.178) 4.9

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