This part is a kind of semiconductor called ULN2803.

Function of this product has EIGHT DARLINGTON ARRAYS.

Manufacturers : Unisonic Technologies

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD ULN2803 LINEAR INTEGRATED CIRCUIT EIGHT DARLINGTON ARRAYS  DESCRIPTION The UTC ULN2803 is high-voltage, high-current Darlington drivers comprised of eight NPN Darlington pairs.  FEATURES *Output current (single output) 500mA MAX. *High sustaining voltage output 50V MIN. *Output clamp diodes *Inputs compatible with various types of logic  ORDERING INFORMATION Ordering Number Lead Free Halogen Free ULN2803L-D18-T ULN2803G-D18-T - ULN2803G-S18-R - ULN2803G-P20-R Package DIP-18 SOP-18 TSSOP-20 DIP-18 SOP-18 TSSOP-20 Packing Tube Tape Reel Tape Reel www.unisonic.com.tw Copyright © 2015 Unisonic Technologies Co., Ltd 1 of 7 QW-R113-004.G ULN2803  MARKING DIP-18 LINEAR INTEGRATED CIRCUIT SOP-18 TSSOP-20  PIN CONFIGURATIONS NC 1 [ ... ]

ULN2803 PDF Datasheet Download