buz104.pdf datasheet:

BUZ 104SIPMOS Power Transistor N channel Enhancement mode Avalanche-rated dv/dt rated Low on-resistance 175C operating temperature also in TO-220 SMD availablePin 1 Pin 2 Pin 3G D SType VDS ID RDS(on) Package Ordering CodeBUZ 104 50 V 17.5 A 0.1 TO-220 AB C67078-S1353-A2Maximum RatingsParameter Symbol Values UnitContinuous drain current ID ATC = 29 C 17.5Pulsed drain current IDpulsTC = 25 C 70Avalanche energy, single pulse EAS mJID = 17.5 A, VDD = 25 V, RGS = 25 L = 114 H, Tj = 25 C 35Reverse diode dv/dt dv/dt kV/sIS = 17.5 A, VDS = 40 V, diF/dt = 200 A/sTjmax = 175 C 6Gate source voltage VGS 20 VPower dissipation Ptot WTC = 25 C 60Operating temperature Tj -55 ... + 175 CStorage temperature Tstg -55 ... + 175Thermal resistance, chip case RthJC 2.5 K/WThermal resistan