View 2sk1443ls datasheet:

Ordering number : ENN3446B 2SK1443LS N-Channel Silicon MOSFET 2SK1443LS Ultrahigh-Speed Switching Applications Features Package Dimensions • Low ON-resistance. unit : mm • Ultrahigh-speed switching. 2078C • Micaless package facilitating mounting. [2SK1443LS] 10.0 4.5 3.2 2.8 0.9 1.2 1.2 0.75 0.7 1 2 3 1 : Gate 2 : Drain 3 : Source Specifications 2.55 2.55 SANYO : TO-220FI(LS) Absolute Maximum Ratings at Ta=25°C Parameter Symbol Conditions Ratings Unit Drain-to-Source Voltage VDSS 450 V Gate-to-Source Voltage VGSS ±30 V Drain Current (DC) ID 1 A Drain Current (Pulse) IDP PW?10µs, duty cycle?1% 4 A 2.0 W Allowable Power Dissipation PD Tc=25°C20 W Channel Temperature Tch 150 °C Storage Temperature Tstg --55 to +150 °C Electrical Characteristics at Ta=25°C Ra