This part is a kind of semiconductor called D1853.

Function of this product has 2SD1853.

Manufacturers : Sanyo Semiconductor Corporation

Image and pinout :

Some of the text within the PDF file :

Ordering number:EN2506 NPN Epitaxial Planar Silicon Darlington Transistor 2SD1853 Driver Applications Applications · Motor drivers, hammer drivers, relay drivers. Package Dimensions unit:mm 2003B [2SD1853] 5.0 4.0 4.0 Features · High DC current gain. · Low saturation voltage. w w w . D a t a S h e e t 4 U . c o m 0.45 0.5 0.6 2.0 0.45 0.44 14.0 5.0 1 2 3 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 Conditions 1.3 1.3 1 : Emitter 2 : Collector 3 : Base JEDEC : TO-92 EIAJ : SC-43 SANYO : NP Ratings 80 60 6 1.5 3 0.7 [ ... ]

D1853 PDF Datasheet Download