2N3947
Seme LAB
Bipolar NPN Device2N3947
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
2N3947
Motorola Semiconductors
GENERAL PURPOSE TRANSISTORMAXIMUM RATINGS
Rating
Collector-Emitter Voltage
Collector-Base Voltage
Emitter-Base Voltage
—Collector Current Continuous
Total Device Dissipation (a T"a = 25°C Derate above 25°C
@Total Device Dissipation Tc = 25°C
Derate above 25°C
Operating and Storag
2N3947
Central Semiconductor
SILICON NPN TRANSISTORS2N3947
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 ot