This part is a kind of semiconductor called K1459.

Function of this product has 2SK1459.

Manufacturers : Sanyo Semicon Device

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Some of the text within the PDF file :

Ordering number:EN3462A N-Channel Silicon MOSFET 2SK1459 Ultrahigh-Speed Switching Applications Features · Low ON-state resistance. · Ultrahigh-speed switching. · Micaless package facilitating mounting. 3.2 Package Dimensions unit:mm 2078B [2SK1459] 10.0 3.5 7.2 4.5 2.8 16.1 16.0 0.9 1.2 14.0 3.6 0.7 0.75 1 2 3 0.6 1.2 Specifications Absolute Maximum Ratings at Ta = 25˚C Parameter Drain-to-Source Voltage Gate-to-Source Voltage Drain Current (DC) Drain Current (Pulse) Allowable Power Dissipation Channel Temperature Storage Temperature Symbol VDSS VGSS ID IDP PD Tch Tstg PW≤10µs, duty cycle≤1% Tc=25°C 2.55 2.55 1 : Gate 2 : Drain 3 : Source SANYO : TO-220FI(LS) Conditions 2.4 Ratings 900 ±30 2.5 5 2.0 30 150 –55 to +150 Unit V V A A W W [ ... ]

K1459 PDF Datasheet Download