This part is a kind of semiconductor called K2508.

Function of this product has 2SK2508.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK2508 TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (π−MOSV) 2SK2508 Switching Regulator and DC−DC Converter and Motor Applications z Low drain−source ON resistance z High forward transfer admittance z Low leakage current Unit: mm : RDS (ON) = 0.18 Ω (typ.) : |Yfs| = 13 S (typ.) : IDSS = 100 μA (max) (VDS = 250 V) : Vth = 1.5~3.5 V (VDS = 10 V, ID = 1 mA) z Enhancement mode Absolute 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 250 250 ±20 13 52 45 148 13 4.5 150 −55~150 Unit V V V A A W mJ A mJ °C °C Pulse (Note 1) Drain power dissipation (Tc = 25°C) Single pulse ava [ ... ]

K2508 PDF Datasheet Download