This part is a kind of semiconductor called 2SK2843.

Function of this product has N CHANNEL MOS TYPE (HIGH SPEED/ HIGH CURRENT SWITCHING/ CHOPPER REGULATOR/ DC-DC CONVERTERAND MOTOR DRIVE APPLICATIONS).

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK2843 TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (π−MOSV) 2SK2843 Chopper Regulator, DC−DC Converter and Motor Drive Applications z Low drain−source ON resistance z High forward transfer admittance z Low leakage current z Enhancement mode : RDS (ON) = 0.54 Ω (typ.) : |Yfs| = 9.0 S (typ.) Unit: mm : IDSS = 100 μA (max) (VDS = 600 V) : Vth = 2.0 to 4.0 V (VDS = 10 V, ID = 1 mA) 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 600 600 ±30 10 40 45 363 10 5.0 150 −55 to 150 Unit V V V A A W mJ A mJ °C °C Pulse (Note 1) Drain power dissipation (Tc = 25°C) Single pulse avalanche energy ( [ ... ]

2SK2843 PDF Datasheet Download