These numbers point to a device that can switch at moderate frequencies without burning excessive drive power in the gate driver circuit.
The 800 V Vdss gives you headroom for 400 VDC bus rails in power factor correction stages or flyback converters. The 7 A continuous rating is a package-limited figure at 25°C case — derate it if the case runs hot, and the 25 W power dissipation ceiling is the real thermal constraint when you size the heatsink. If you drive the gate at lower voltage, the on-resistance climbs — the Vgs(th) max of 5 V at 100 µA tells you the threshold is high enough that 5 V logic won't fully enhance it. Plan for a 10 V gate rail or a dedicated gate driver. The TO-220FP package means the mounting tab is electrically isolated, which is a real time-saver in assembly — no mica washer or sil-pad needed. But the plastic body conducts heat less efficiently than a standard TO-220, so the 25 W dissipation limit is lower than what a metal-tab version would carry. Keep the heatsink interface clean and use thermal compound.