He turned to the forums, the digital graveyard where old tech wizards congregated. He posted a query: “Need cross-reference for D998 and B778. 80V, 4A, 40W. Driver stage.”
Tighten the screw firmly but do not over-tighten, as it can crack the transistor casing. persamaan transistor d998 b778 install
If the heatsink is shared, use mica insulators or silicon pads . The collector (middle pin/tab) must not touch the metal heatsink unless designed to be grounded. He turned to the forums, the digital graveyard