The installation wasn't going to be a simple drop-in. The original D998 and B778 had a specific lead spacing. Elias grabbed his insulated pliers and carefully bent the leads of the new transistors to match the old PCB footprint. He applied a thin, even layer of thermal paste to the back of the new casings—white grease that looked like face cream—and slid the orange mica insulators underneath.
Dihubungkan ke output driver (jalur basis) melalui resistor (biasanya 10 Ohm). Kaki 2 (Kolektor): persamaan transistor d998 b778 install
Karena disipasi daya mencapai 100W, keduanya WAJIB dipasang pada heatsink aluminium yang besar. The installation wasn't going to be a simple drop-in
Apply power gradually using a variable power supply or a "dim bulb" tester to check for shorts before full operation. Common Equivalents (Persamaan) He applied a thin, even layer of thermal
Compiled from datasheets and field repair experience.
"Good sign," he breathed.