This part is a kind of semiconductor called K1170.

Function of this product has 2SK1170.

Manufacturers : Hitachi Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK1169, 2SK1170 Silicon N-Channel MOS FET Application High speed power switching Features • • • • • Low on-resistance High speed switching Low drive current No secondary breakdown Suitable for switching regulator and DC-DC converter Outline TO-3P D G 1 2 3 1. Gate 2. Drain (Flange) 3. Source S 2SK1169, 2SK1170 Absolute Maximum Ratings (Ta = 25°C) Item Drain to source voltage 2SK1169 2SK1170 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 VGSS ID I D(pulse)* I DR Pch* Tch Tstg 2 1 Symbol VDSS Ratings 450 500 ±30 20 80 20 120 150 –55 to +150 Unit V V A [ ... ]

K1170 PDF Datasheet Download