This part is a kind of semiconductor called K3114.

Function of this product has 2SK3114.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET MOS FIELD EFFECT TRANSISTOR 2SK3114 SWITCHING N-CHANNEL POWER MOS FET INDUSTRIAL USE ORDERING INFORMATION PART NUMBER 2SK3114 PACKAGE Isolated TO-220 DESCRIPTION The 2SK3114 is N-channel DMOS FET device that features a low gate charge and excellent switching characteristics, and designed for high voltage applications such as switching power supply, AC adapter. FEATURES • Low on-state resistance: RDS(on) = 2.2 Ω MAX. (VGS = 10 V, ID = 2.0 A) • Low gate charge: QG = 15 nC TYP. (VDD = 450 V, VGS = 10 V, ID = 4.0 A) • Gate voltage rating: ±30 V • Avalanche capability ratings • Isolated TO-220 package 5 (Isolated TO-220) ABSOLUTE MAXIMUM RATINGS (TA = 25°C) Drain to Source Voltage (VGS = 0 V) Gate to Source Voltage (VDS = 0 V) Drain Current (DC) (TC = 25°C) Drai [ ... ]

K3114 PDF Datasheet Download