This part is a kind of semiconductor called K8A50D.

Function of this product has TK8A50D.

Manufacturers : Toshiba

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Some of the text within the PDF file :

TK8A50D TOSHIBA Field Effect Transistor Silicon N Channel MOS Type (π-MOSⅦ) TK8A50D Switching Regulator Applications • • • • Low drain-source ON-resistance: RDS (ON) = 0.7 Ω (typ.) High forward transfer admittance: |Yfs| = 4.0 S (typ.) Low leakage current: IDSS = 10 μA (max) (VDS = 500 V) Enhancement mode: Vth = 2.0 to 4.0 V (VDS = 10 V, ID = 1 mA) Unit: mm Absolute Maximum Ratings (Ta = 25°C) Characteristics Drain-source voltage Gate-source voltage DC Drain current (Note 1) Symbol VDSS VGSS ID IDP PD EAS IAR EAR Tch Tstg Rating 500 ±30 8 32 40 165 8 4.0 150 -55 to 150 A W mJ A mJ °C °C 1: Gate 2: Drain 3: Source Unit V V Pulse (t = 1 ms) (Note 1) Drain power dissipation (Tc = 25°C) Single pulse avalanche energy (Note 2) Avalanche current Repetitive avalanche energy [ ... ]

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