View 2n2857 datasheet:

2N2857MECHANICAL DATADimensions in mm (inches)NPN TRANSISTOR4.95 (0.195)4.52 (0.178)4.95 (0.195)4.52 (0.178)FEATURES SILICON NPN TRANSISTOR0.48 (0.019)APPLICATIONS:0.41 (0.016)dia. AMPLIFIER, OSCILLATOR ANDCONVERTER APPLICATIONS UP TO500MHz2.54 (0.100)Nom.43 12TO-72 METAL PACKAGEABSOLUTE MAXIMUM RATINGS (TA = 25C unless otherwise stated)VCBO Collector Base Voltage 30VVCEO Collector Emitter Voltage 15VVEBO Emitter Base Voltage 2.5VIC Collector Current 40mAPD Total Device Dissipation @ TA =25C 200mWPD Total Device Dissipation @ TC =25C 300mWTSTG , TJ Operating and Storage Temperature Range 65 to 200CSemelab plc. Telephone +44(0)1455) 556565. Fax +44(0)1455) 552612. e-mail sales@semelab.co.ukPrelim. 7/98Website http://www.semelab.co.uk4.32 (0.170)min.12.7 (0.500)5.33 (0.210)2N2857E

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