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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 = 25C 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 =25C Total Device Dissipation @ TC =25C Operating and Storage Temperature Range 30V 15V 2.5V 40mA 200mW 300mW -65 to 200C 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 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 = 25C unless otherwise stated) Test Conditions IC = 1A IE = 10A 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 = 50 IC = 2mA Tamb= 150C IC = 3mA IC = 1.5mA RG = 50 IC = 0 IE = 0 IB = 0 IC = 0 Min. 30 15 2.5 Typ. Max. Unit V 10 1 nA A -- 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 sales@semelab.co.uk Website http://www.semelab.co.uk Prelim. 7/98 |
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