600 V, 8 A, 370 mOhm — the conduction-loss number
The STL13N60DM2: Gate charge totals 19 nC at 10 V, with an input capacitance of 730 pF at 100 V drain-source. The 52 W power dissipation ceiling in the PowerFlat 5x6 HV package gives headroom for a 600 V, 8 A die in a surface-mount outline.
The 370 mOhm Rds(on) at Vgs=10 V is the max at room temperature; expect the on-resistance to roughly double at 125 °C junction, which is normal for a planar-like DM2 structure. The 19 nC total gate charge means a 1 A gate driver can switch this FET in under 20 ns, keeping the Miller plateau short in a hard-switched converter. Maximum gate-source voltage is ±25 V, and the threshold voltage is 5 V max at 250 µA.
