Persamaan Transistor D998 B778

Selalu ganti sepasang (NPN dan PNP) jika salah satu rusak, untuk memastikan keseimbangan beban pada amplifier.

The 2SD998 (NPN) and 2SB778 (PNP) are silicon power transistors designed specifically for high-power audio frequency applications. They are typically sold and used as a "complementary pair," meaning they share similar electrical characteristics but have opposite polarities, allowing them to work together in push-pull amplifier circuits. 2. Technical Specifications Persamaan Transistor D998 B778

: Frequently used as rugged, general-purpose power equivalents. A1941 / C5198 Selalu ganti sepasang (NPN dan PNP) jika salah

Original D998/B778 are rated for 160V (Vceo). If your amplifier runs on ±70V DC rails or less, you can safely use 140V-rated transistors like 2SC5200/2SA1943. If rails are ±75V to ±80V, choose 200V+ types (MJL4281A/4302A or 2SC3858/2SA1494). If your amplifier runs on ±70V DC rails

They are commonly found in high-fidelity (Hi-Fi) stereo amplifiers, PA systems, and high-end car audio amplifiers from the 1990s–2000s (e.g., brands like Technics, Kenwood, JVC, Pioneer).

: Sering digunakan sebagai pengganti langsung di banyak modul audio karena karakteristik tegangan dan arusnya yang mirip ( 2SC5200 (NPN) 2SA1943 (PNP)