This part is a kind of semiconductor called A1706.

Function of this product has 2SA1706.

Manufacturers : Sanyo

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN3026 PNP/NPN Epitaxial Planar Silicon Transistors 2SA1706/2SC4486 High-Current Switching Applications Applications · Voltage regulators, relay drivers, lamp drivers. Features · Adoption of FBET, MBIT processes. · Large current capacity and wide ASO. · Fast switching speed. Package Dimensions unit:mm 2064 [2SA1706/2SC4486] ( ) : 2SA1706 Specifications 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 Electrical Characteristics at Ta = 25˚C Conditions Parameter Symbol Conditions Collector Cutoff Current Emitter Cutoff Current DC Curre [ ... ]

A1706 PDF Datasheet Download