This part is a kind of semiconductor called 2SC5342.

Function of this product has NPN Silicon Transistor (Medium power amplifier).

Manufacturers : AUK corp

Image and pinout :

Some of the text within the PDF file :

Semiconductor 2SC5342 NPN Silicon Transistor Description • Medium power amplifier Features • Large collector current : IC=500mA • Low collector saturation voltage enabling low-voltage operation • Complementary pair with 2SA1979 Ordering Information Type NO. 2SC5342 Marking C5342 Package Code TO-92 Outline Dimensions 3.35~3.55 4.4~4.6 2.15~2.35 unit : mm 4.4~4.6 0.38~0.42 1.96~2.16 14.0±0.40 1.27 Typ. 2.54 Typ. 1 2 3 1.1~1.3 0.38 PIN Connections 1. Emitter 2. Collector 3. Base KST-9004-003 1 2SC5342 Absolute maximum ratings Characteristic Collector-Base voltage Collector-Emitter voltage Emitter-Base voltage Collector current Collector dissipation Junction temperature Storage temperature (Ta=25°C) Symbol VCBO VCEO VEBO IC PC Tj Tstg Ratings 40 32 5 500 625 150 [ ... ]

2SC5342 PDF Datasheet Download