This part is a kind of semiconductor called 2SD313.

Function of this product has NPN EPITAXIAL PLANAR TRANSISTOR.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO., LTD 2SD313 NPN EPITAXIAL PLANAR TRANSISTOR DESCRIPTION The UTC 2SD313 is designed for use in general purpose amplifier and switching applications. NPN SILICON TRANSISTOR 1 TO-220 *Pb-free plating product number:2SD313L ORDERING INFORMATION Order Number Normal Lead Free Plating 2SD313-x-TA3-T 2SD313L-x-TA3-T Package TO-220 Pin Assignment 1 2 3 B C E Packing Tube 2SD313L-x-TA3-T (1)Packing Type (2)Package Type (3)Rank (4)Lead Plating (1) T: Tube (2) TA3: TO-220 (3) x: refer to Classification of hFE (4) L: Lead Free Plating, Blank: Pb/Sn www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 4 QW-R203-001,B 2SD313 ABSOLUTE MAXIMUM RATINGS NPN SILICON TRANSISTOR PARAMETER SYMBOL RATINGS UNIT Collector-Base Voltage V [ ... ]

2SD313 PDF Datasheet Download