Persamaan Transistor D998 B778 Repack ◉ [Trending]

4. Pasangan A1943 dan C5200 (Pilihan Upgrade Daya Lebih Besar) 2SA1943 (PNP) & 2SC5200 (NPN)

(tergantung produsen). Hanya gunakan opsi ini jika tegangan suplai ( Vcccap V sub c c end-sub ) power amplifier Anda di bawah 2. Persamaan Upgrade (High Performance)

Sebelum mencari komponen pengganti, pahami batasan maksimum ( absolute maximum ratings ) dari sepasang transistor ini: Parameter Maksimum Nilai Spesifikasi Tegangan Kolektor-Basis ( VCBOcap V sub cap C cap B cap O end-sub ) Arus Kolektor Kontinu ( ICcap I sub cap C ) Disipasi Daya Maksimum ( PDcap P sub cap D ) 80 Watt hingga 100 Watt Penguatan Arus DC ( hFEh sub cap F cap E end-sub ) 80 – 160 Kemasan / Package TO-3P / TO-3PF Daftar Persamaan Transistor D998 dan B778 Persamaan Transistor D998 B778

Saat mencari transistor pengganti, pastikan komponen ekuivalen memiliki nilai Vceocap V sub c e o end-sub (tegangan), Iccap I sub c (arus), dan Pdcap P sub d

+Vcc (+50V to +70V) | R1 (0.22Ω/5W) | C (2SD998) | Driver Stage (NPN) --- B (D998) E --- to Speaker (via relay) | B (B778) E --- to Speaker | Driver Stage (PNP) --- C (2SB778) | R2 (0.22Ω/5W) | -Vcc (-50V to -70V) Core Specifications These transistors are almost always used

Berikut adalah beberapa persamaan yang paling mendekati atau memiliki performa lebih tinggi (upgrade) dan sering digunakan dalam perbaikan amplifier: A. Persamaan Langsung (Direct Replacement)

Transistor 2SD998 (D998) and 2SB778 (B778) are complementary power transistors frequently used in the output stages of audio amplifiers. They are designed for high-power applications, typically in the 45–50W range. Core Specifications These transistors are almost always used as a matched pair: High-power silicon transistor. 2SB778 (PNP): Complementary partner to the D998. Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 120V. Current ( ICcap I sub cap C ): 10A. Power Dissipation ( PCcap P sub cap C ): 80W to 100W, depending on the manufacturer. their policies apply.

: Specifically recommended for 45W–50W audio frequency output stages. Power Supplies

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