This part is a kind of semiconductor called A1718.

Function of this product has 2SA1718.

Manufacturers : SavantIC

Image and pinout :

Some of the text within the PDF file :

SavantIC Semiconductor Product Specification Silicon PNP Power Transistors 2SA1718 DESCRIPTION ·With TO-220F package ·High DC current gain. ·Low collector saturation voltage. ·DARLINGTON APPLICATIONS ·Ideal for motor drviers and solenoid drivers application PINNING PIN 1 2 3 Base Collector Emitter Fig.1 simplified outline (TO-220F) and symbol DESCRIPTION Absolute maximum ratings (Ta=25 ) SYMBOL VCBO VCEO VEBO IC ICM IB PARAMETER Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Collector current-peak Base current TC=25 PC Collector dissipation Ta=25 Tj Tstg Junction temperature Storage temperature 2.0 150 -55~150 CONDITIONS Open emitter Open base Open collector VALUE -100 -100 -7 -5 -10 -0.5 20 W UNIT V [ ... ]

A1718 PDF Datasheet Download