This part is a kind of semiconductor called MJE13005.

Function of this product has NPN SILICON TRANSISTOR(ELECTRONIC TRANSFORMERS / POWER SWICHING CIRCUIT).

Manufacturers : Wing Shing Computer Components

Image and pinout :

Some of the text within the PDF file :

MJE13005 ELECTRONIC TRANSFORMERS , POWER SWICHING CIRCUIT NPN SILICON TRANSISTOR ABSOLUTE MAXIMUM RATINGS ( T A=25 C ) o CHARACTERISTIC Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current Collector Power Dissipation (Tc=25 ) Junction Temperature Storage Temperature Range SYMBOL VCBO RATING UNIT V V V A W VCEO VEBO Ic Pc Tj Tstg 700 400 9 4 75 150 -55~+150 ELECTRICAL CHARACTERISTICS (TA=25oC ) CHARACTERISTIC Collector-Emitter Sustaining Voltage Collector-Base Breakdown Voltage Emitter-Base Breakdown Voltage Collector Cut off current Collector-Emitter Cut off Current Emitter-Base Cut off Voltage DC Current Gain Collector-Emitter Saturation Voltage Base-Emitter Saturation Voltage Fall Time Storage Time Freqency Characteristics SYMBOL VCEO(sus) V( [ ... ]

MJE13005 PDF Datasheet Download