This part is a kind of semiconductor called 2SK3075.

Function of this product has Silicon N Channel MOS Type Field Effect Transistor.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SK3075 TOSHIBA FIELD EFFECT TRANSISTOR SILICON N CHANNEL MOS TYPE 2SK3075 RF Power MOSFET for VHF− and UHF−Band Power Amplifier (Note)The TOSHIBA products listed in this document are intended for high frequency Power Amplifier of telecommunications equipment. These TOSHIBA products are neither intended nor warranted for any other use. Do not use these TOSHIBA products listed in this document except for high frequency Power Amplifier of telecommunications equipment. Unit: mm z Output Power z Power Gain z Drain Efficiency : PO ≥ 7.5W : GP ≥ 11.7dB : ηD ≥ 50% Absolute Maximum Ratings (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Drain-Source Voltage VDSS 30 V Gate-Source Voltage VGSS 25 V Drain Current ID 5 A Drain Power Dissipation Channel Temperature Storage Tem [ ... ]

2SK3075 PDF Datasheet Download