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2N2857 Dataheets PDF



Part Number 2N2857
Manufacturers Seme LAB
Logo Seme LAB
Description NPN TRANSISTOR
Datasheet 2N2857 Datasheet2N2857 Datasheet (PDF)

2N2857 MECHANICAL DATA Dimensions in mm (inches) 4.95 (0.195) 4.52 (0.178) 4.95 (0.195) 4.52 (0.178) NPN TRANSISTOR 5.33 (0.210) 4.32 (0.170) FEATURES • SILICON NPN TRANSISTOR 12.7 (0.500) min. 0.48 (0.019) 0.41 (0.016) dia. APPLICATIONS: • AMPLIFIER, OSCILLATOR AND CONVERTER APPLICATIONS UP TO 500MHz 2.54 (0.100) Nom. 4 3 2 1 TO-72 METAL PACKAGE ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise stated) VCBO VCEO VEBO IC PD PD TSTG , TJ Collector – Base Voltage Collector – Emitter .

  2N2857   2N2857


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2N2857 MECHANICAL DATA Dimensions in mm (inches) 4.95 (0.195) 4.52 (0.178) 4.95 (0.195) 4.52 (0.178) NPN TRANSISTOR 5.33 (0.210) 4.32 (0.170) FEATURES • SILICON NPN TRANSISTOR 12.7 (0.500) min. 0.48 (0.019) 0.41 (0.016) dia. APPLICATIONS: • AMPLIFIER, OSCILLATOR AND CONVERTER APPLICATIONS UP TO 500MHz 2.54 (0.100) Nom. 4 3 2 1 TO-72 METAL PACKAGE ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise stated) VCBO VCEO VEBO IC PD PD TSTG , TJ Collector – Base Voltage Collector – Emitter Voltage Emitter – Base Voltage Collector Current Total Device Dissipation @ TA =25°C Total Device Dissipation @ TC =25°C Operating and Storage Temperature Range 30V 15V 2.5V 40mA 200mW 300mW –65 to 200°C Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. e-mail [email protected] Website http://www.semelab.co.uk Prelim. 7/98 2N2857 ELECTRICAL CHARACTERISTICS Parameter V(BR)CBO* V(BR)CEO V(BR)EBO ICBO hFE NF CEBO Gpe rbB’C’b’c fT Cre Pc Collector – Base Breakdown Voltage Emitter – Base Breakdown Voltage Collector – Base Cut-off Current DC Current Gain Noise Figure Emitter Base Capacitance Power Gain (Neutralised) Feedback Time Constant Transition Frequency (TA = 25°C unless otherwise stated) Test Conditions IC = 1µA IE = 10µA VCB = 15V IE = 0 VCE = 1V VCE = 6V f = 450MHz VEB = 0.5V f = 1 MHz VCE = 6V f = 450MHz VCB = 6V f = 31.9MHz VCE = 6V f = 100 MHz VCE = 10V f = 1 MHz VCB = 10V f = 500MHz IC = 12mA IC = 5mA IC = 0 IC = 1.5mA RG = 50Ω IC = 2mA Tamb= 150°C IC = 3mA IC = 1.5mA RG = 50Ω IC = 0 IE = 0 IB = 0 IC = 0 Min. 30 15 2.5 Typ. Max. Unit V 10 1 nA µA — dB pF 19 dB ps GHz pF mW Collector – Emitter Breakdown Voltage IC = 3mA 30 3.8 1.4 12.5 4 1 0.6 30 7 150 4.5 15 1.9 1 Reverse Capacitance Oscillator Power Output Semelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. e-mail [email protected] Website http://www.semelab.co.uk Prelim. 7/98 .


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