This has a metal tab, like a DPAK transistor, but isolated.
I measure about 5 pF from both ends of the resistive element to the tab. Caddock says 2.3 pF, which is probably one end. It seems awfully fast.
It's rated for 25 watts, but I wonder how much it's good for mounted on a PCB. I can via the tab to the ground plane, and maybe to a patch of copper on the bottom of the board. Something like 6 watts would do for now, which is probably OK. It won't die from getting hot, so my concern is heating other parts and scorching the board.
Several other people make similar dpak resistors. I'll get some others and test them too.