This part is a kind of semiconductor called 2SK3869.

Function of this product has Switching Regulator Applications.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK3869 TOSHIBA Field Effect Transistor Silicon N-Channel MOS Type (π-MOSVI) 2SK3869 Switching Regulator Applications • • • • Low drain-source ON-resistance: RDS (ON) = 0.55 Ω (typ.) High forward transfer admittance: |Yfs| = 5.5 S (typ.) Low leakage current: IDSS = 100 μA (VDS = 450 V) Enhancement model: Vth = 2.0 to 4.0 V (VDS = 10 V, ID = 1 mA) Unit: mm Absolute Maximum Ratings (Ta = 25°C) Characteristic Drain-source voltage Drain-gate voltage (RGS = 20 kΩ) Gate-source voltage DC Drain current (Note 1) Symbol VDSS VDGR VGSS ID IDP PD EAS IAR EAR Tch Tstg Rating 450 450 ±30 10 40 40 222 10 4 150 -55 to 150 A W mJ A mJ °C °C Unit V V V Pulse (t = 1 ms) (Note 1) Drain power dissipation (Tc = 25°C) Single pulse avalanche energy (Note 2) Avalanche c [ ... ]

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