This part is a kind of semiconductor called BC237A.

Function of this product has Amplifier Transistors.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Amplifier Transistors Order this document by BC237/D NPN Silicon COLLECTOR 1 2 BASE 3 EMITTER BC237,A,B,C BC238B,C BC239,C MAXIMUM RATINGS Rating Collector – Emitter Voltage Collector – Emitter Voltage Emitter – Base Voltage Collector Current Continuous Total Device Dissipation @ TA = 25°C Derate above 25°C Total Device Dissipation @ TC = 25°C Derate above 25°C Operating and Storage Junction Temperature Range Symbol VCEO VCES VEBO IC PD PD TJ, Tstg BC 237 45 50 6.0 BC 238 25 30 5.0 100 350 2.8 1.0 8.0 – 55 to +150 BC 239 25 30 5.0 Unit Vdc Vdc Vdc mAdc mW mW/°C Watts mW/°C °C 1 2 3 CASE 29–04, STYLE 17 TO–92 (TO–226AA) THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction to Ambient Thermal Resistance, Jun [ ... ]

BC237A PDF Datasheet Download