This part is a kind of semiconductor called A1707.

Function of this product has Bipolar Transistor.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

Ordering number : EN3093A 2SA1707/2SC4487 Bipolar Transistor (-)50V, (-)3A, Low VCE(sat), (PNP)NPN Single NMP http://onsemi.com Features • Adoption of FBET, MBIT processes • Low collector-to-emitter saturation voltage • Large current capacity, wide ASO • Fast switching speed ( )2SA1707 Specifications Absolute Maximum Ratings at Ta=25°C Parameter Symbol Collector-to-Base Voltage Collector-to-Emitter Voltage Emitter-to-Base Voltage Collector Current Collector Current (Pulse) Collector Dissipation Junction Temperature VCBO VCEO VEBO IC ICP PC Tj Storage Temperature Tstg Conditions Ratings (--)60 (--)50 (--)6 (--)3 (--)6 1 150 --55 to +150 Unit V V V A A W °C °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functi [ ... ]

A1707 PDF Datasheet Download