2N3947 PDF File ( Datasheet )

2N3947 SILICON NPN TRANSISTOR w w w. c e n t r a l s e m i . c o m DESCRIPTION: The CENTRAL SEMICONDUCTOR 2N3947 is a silicon NPN transistor designed for general purpose applications. MARKING: FULL PART NUMBER TO-18 CASE MAXIMUM RATINGS: (TA=25°C unless otherwise noted) SYMBOL Collector-Base Voltage VCBO Collector-Emitter Voltage VCEO Emitter-Base Voltage VEBO Continuous Collector Current IC Power Dissipation PD Power Dissipation (TC=25°C) PD Operating and Storage Junction Temp

2N3947 Dimensions in mm (inches). 5.84 (0.230) 5.31 (0.209) 4.95 (0.195) 4.52 (0.178) Bipolar NPN Device in a Hermetically sealed TO18 Metal Package. 0.48 (0.019) 0.41 (0.016) dia. 2.54 (0.100) Nom. 31 2 1 Emitter TO18 (TO206AA) PINOUTS 2 Base 3 Collector Bipolar NPN Device. VCEO = 40V IC = 0.2A All Semelab hermetically sealed products can be processed in accordance with the requirements of BS, CECC and JAN, JANTX, JANTXV and JANS specifications Parameter VCEO* IC(CONT) hFE ft PD T