This part is a kind of semiconductor called 2SC3320.

Function of this product has HIGH VOLTAGE HIGH SPEED SWITCHING.

Manufacturers : UTC

Image and pinout :

Some of the text within the PDF file :

UNISONIC TECHNOLOGIES CO.,LTD 2SC3320 NPN EPITAXIAL SILICON TRANSISTOR HIGH VOLTAGE HIGH SPEED SWITCHING  FEATURES * High voltage, high speed switching * High reliability  ORDERING INFORMATION Ordering Number Lead Free Halogen Free Package 2SC3320L-x-T3P-T 2SC3320L-x-T3P-T TO-3P 2SC3320L-x-T3N-T 2SC3320L-x-T3N-T TO-3PN Note: Pin Assignment: B: Base C: Collector E: Emitter Pin Assignment 123 BCE BCE Packing Tube Tube  MARKING INFORMATION PACKAGE TO-3P TO-3PN MARKING www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 5 QW-R214-008.E 2SC3320 NPN EPITAXIAL SILICON TRANSISTOR  ABSOLUTE MAXIMUM RATINGS (TC = 25°C) PARAMETER SYMBOL RATINGS UNIT Collector Base Voltage Collector Emitter Voltage Emitter Base Voltage VCBO VCEO VCEO(SU [ ... ]

2SC3320 PDF Datasheet Download