This part is a kind of semiconductor called K1518.

Function of this product has 2SK1518.

Manufacturers : Hitachi Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK1517, 2SK1518 Silicon N-Channel MOS FET Application High speed power switching Features • • • • • Low on-resistance High speed switching Low drive current Built-in fast recovery diode (trr = 120 ns) Suitable for motor control, switching regulator, DC-DC converter Outline TO-3P D G 1 2 3 1. Gate 2. Drain (Flange) 3. Source S 2SK1517, 2SK1518 Absolute Maximum Ratings (Ta = 25°C) Item Drain to source voltage 2SK1517 2SK1518 Gate to source voltage Drain current Drain peak current Body to drain diode reverse drain current Channel dissipation Channel temperature Storage temperature Symbol VDSS Ratings 450 500 ±30 20 Unit V VGSS ID I D(pulse)* I DR Pch* Tch Tstg 2 1 V A A A W °C °C 80 20 120 150 –55 to +150 Notes: 1. PW �� [ ... ]

K1518 PDF Datasheet Download