This part is a kind of semiconductor called K1305.

Function of this product has Silicon N Channel MOS FET.

Manufacturers : Renesas

Image and pinout :

Some of the text within the PDF file :

2SK1305 Silicon N Channel MOS FET Application High speed power switching Features • Low on-resistance • High speed switching • Low drive current • 4 V gate drive device  Can be driven from 5 V source • Suitable for motor drive, DC-DC converter, power switch and solenoid drive Outline RENESAS Package code: PRSS0003AD-A (Package name: TO-220FM) D G 12 3 S REJ03G0924-0200 (Previous: ADE-208-1263) Rev.2.00 Sep 07, 2005 1. Gate 2. Drain 3. Source Rev.2.00 Sep 07, 2005 page 1 of 6 2SK1305 Absolute Maximum Ratings 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 Electrical [ ... ]

K1305 PDF Datasheet Download