Just bought some cheap IRF840's which turned up today with a poorly printed part number and the ON Semi logo sloping downhill at an angle.
I tried searching for the part number on their website but don't get any hits so far so I'll keep looking at this stage.
I popped the TO-220 packages on an old IR brand IRF840 and the new item and they both appear to have a similar sized silicon die: IR brand-6x4.5mm ON brand-5.5x4mm
Has anyone here ever bought IRF840's from ON semi?.