This part is a kind of semiconductor called 2SK3205.

Function of this product has Switching Regulator Applications DC−DC Converter/ and Motor Drive Applications.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK3205 TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (L −π−MOSV) 2 2SK3205 Switching Regulator Applications DC−DC Converter, and Motor Drive Applications l 4 V gate drive l Low drain−source ON resistance l High forward transfer admittance l Low leakage current l Enhancement−mode : RDS (ON) = 0.36 Ω (typ.) : |Yfs| = 4.5 S (typ.) Unit: mm : IDSS = 100 µA (max) (VDS = 150 V) : Vth = 0.8~2.0 V (VDS = 10 V, ID = 1 mA) Maximum Ratings (Ta = 25°C) Characteristics Drain−source voltage Drain−gate voltage (RGS = 20 kΩ) Gate−source voltage Drain current DC (Note 1) Symbol VDSS VDGR VGSS ID IDP PD EAS IAR EAR Tch Tstg Rating 150 150 ±20 5 20 20 71 5 2 150 −55~150 Unit V V V A W mJ A mJ °C °C Pulse (Note 1) Drain power dissipation (Tc = 25°C) Single pulse [ ... ]

2SK3205 PDF Datasheet Download