This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. D718 120V 8A NPN Power Transistor TO-3P - Electronify India
These transistors are designed for high-power applications, often recommended for amplifiers in the
What is the of your amplifier power supply?
Installing the D998 and B778 transistors, or their modern equivalents, is a challenging but manageable repair. By carefully studying the datasheets, selecting a complementary pair of equivalents with equal or better specifications (like the popular 2SC5200/2SA1943), and meticulously following the installation and biasing procedures, you can successfully restore your amplifier to full working order. persamaan transistor d998 b778 install
Penggantian D998/B778 bisa dilakukan dengan transistor NPN daya yang memiliki spesifikasi tegangan, arus, dan daya disipasi yang setara atau lebih baik serta pinout kompatibel. Selalu konfirmasi lewat datasheet, dan lakukan pengujian pasca-pemasangan untuk memastikan stabilitas rangkaian.
Alternatif lain yang umum ditemukan untuk aplikasi audio daya besar. eElectronicParts Panduan Instalasi
Jika Anda kesulitan menemukan D998/B778 asli, berikut adalah daftar persamaan yang memiliki spesifikasi setara atau lebih tinggi (lebih baik): Persamaan Langsung (Direct Replacement) This public link is valid for 7 days
Disconnect all power from the amplifier and discharge the large filter capacitors using a power resistor.
Beberapa tipe transistor NPN yang memiliki spesifikasi tegangan, arus, dan kaki pinout serupa atau bahkan lebih tinggi meliputi: D998 LFCSP EP 3.3V NPN Power Transistors Datasheet
Periksa resistor kapur (R-Sub/R-Emitter) yang biasanya berukuran Can’t copy the link right now
Transistor legendaris TOSHIBA. Memiliki spesifikasi masif sebesar , dan daya hingga
Panas adalah wajar, namun jika berlebih, periksa bias , pastikan heatsink cukup besar, dan gunakan pasta termal.
For TIP142/TIP147:
| NPN Substitute | PNP Substitute | Notes | | :--- | :--- | :--- | | | 2SB1429 | Exact electrical match, TO-3P | | 2SD2390 | 2SB1560 | Higher voltage (160V), recommended | | 2SD2589 | 2SB1659 | Modern equivalent | | MJ11015 | MJ11016 | TO-3 metal can (requires adapter) | | TIP142 | TIP147 | Lower current (10A vs 10A ok), TO-247 |