This part is a kind of semiconductor called K1317.

Function of this product has 2SK1317.

Manufacturers : Hitachi Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK1317 Silicon N-Channel MOS FET Application High speed power switching Features • • • • • High breakdown voltage V DSS = 1500 V High speed switching Low drive current No secondary breakdown Suitable for switching regulator, DC-DC converter and motor driver Outline TO-3P D G 1 2 3 1. Gate 2. Drain (Flange) 3. Source S 2SK1317 Absolute Maximum Ratings (Ta = 25°C) Item Drain to source voltage Gate to source voltage Drain current Drain peak current Body to drain diode reverse drain current Channel dissipation Channel temperature Storage temperature Notes: 1. PW ≤ 10 µs, duty cycle ≤ 1% 2. Value at TC = 25°C Symbol VDSS VGSS ID I D(pulse)* I DR Pch* Tch Tstg 2 1 Ratings 1500 ±20 2.5 7 2.5 100 150 –55 to +150 Unit V V A A [ ... ]

K1317 PDF Datasheet Download