This part is a kind of semiconductor called A1208.

Function of this product has 2SA1208.

Manufacturers : Sanyo Semicon Device

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN781F PNP/NPN Epitaxial Planar Silicon Transistors 2SA1208/2SC2910 High-Voltage Switching Audio 80W Output Predriver Applications Features · Adoption of FBET process. · High breakdown voltage. · Excellent linearity of hFE and small Cob. · Fast swtching speed. Package Dimensions unit:mm 2006A [2SA1208/2SC2910] ( ) : 2SA1208 Specifications EIAJ:SC-51 SANYO:MP B:Base C:Collector E:Emitter Absolute Maximum Ratings at Ta = 25˚C Parameter Collector-to-Base Voltage Collector-to-Emitter Voltage Emitter-to-Base Voltage Collector Current Collector Current (Pulse) Collector Dissipation Junction Temperature Storage Temperature Symbol VCBO VCEO VEBO IC ICP PC Tj Tstg Conditions Ratings (–)180 (–)160 (–)5 (–)70 (–)140 900 150 –55 to +150 Unit V V V mA mA mW [ ... ]

A1208 PDF Datasheet Download