2sk4085ls.pdf datasheet:

Ordering number : ENA0553B 2SK4085LSSANYO SemiconductorsDATA SHEETN-Channel Silicon MOSFETGeneral-Purpose Switching Device2SK4085LSApplicationsFeatures Low ON-resistance, low input capacitance, ultrahigh-speed switching. High reliability (Adoption of HVP process). Attachment workability is good by Mica-less package. Avalanche resistance guarantee.SpecificationsAbsolute Maximum Ratings at Ta=25CParameter Symbol Conditions Ratings UnitDrain-to-Source Voltage VDSS 500 VGate-to-Source Voltage VGSS 30 VIDc*1 Limited only by maximum temperature 16 ADrain Current (DC)IDpack*2 Tc=25C (SANYOs ideal heat dissipation condition)*3 11 ADrain Current (Pulse) IDP PW10s, duty cycle1% 60 A2.0 WAllowable Power Dissipation PDTc=25C (SANYOs ideal heat dissipation condition)*3 40 WChannel Temperature Tch 150 CStorage Tem