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2N2221 Dimensions in mm (inches). Bipolar NPN Device in a 5.84 (0.230) 5.31 (0.209) Hermetically sealed TO18 4.95 (0.195) 4.52 (0.178) Metal Package. Bipolar NPN Device. VCEO = 30V 0.48 (0.019) 0.41 (0.016) dia. IC = 0.8A 2.54 (0.100) All Semelab hermetically sealed products Nom. can be processed in accordance with the requirements of BS, CECC and JAN, JANTX, JANTXV and JANS specifications 3 1 2 TO18 (TO206AA) PINOUTS 1 Emitter 2 Base 3 Collector Parameter Test Conditions Min. Typ. Max. Units VCEO* 30 V IC(CONT) 0.8 A hFE @ 10/0.15 (VCE / IC) 40 120 - ft 250M Hz PD 0.5 W * Maximum Working Voltage This is a shortform datasheet. For a full datasheet please contact sales@semelab.co.uk. Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Sem