The original TO-3P (also called TO-247 or TO-3PL) has the same pinout as modern TO-247/TO-264. Pinout: B-C-E (left to right when facing flat side with pins down). Most equivalents match this.
Berapa yang digunakan pada power amplifier Anda?
Typically TO-3PML or TO-3PF (large three-pin flat package). Persamaan (Equivalent Substitutes) Persamaan Transistor D998 B778
Berikut adalah beberapa pilihan persamaan komplementer terbaik yang mudah ditemukan di pasar komponen elektronik Indonesia: 1. Pasangan D718 dan B688 (Paling Populer & Mudah Didapat) 2SD718 (NPN) & 2SB688 (PNP)
: 80 Watt hingga 100 Watt (tergantung manufaktur) Penguatan Arus DC (hFE) : 55 hingga 160 Kemasan / Isi (Package) : TO-3P / TO-3PF Daftar Persamaan Transistor D998 dan B778 The original TO-3P (also called TO-247 or TO-3PL)
| Test | Red Probe | Black Probe | Expected Reading | | :--- | :--- | :--- | :--- | | NPN (D998) B-E | Base | Emitter | 0.5–0.7V | | NPN (D998) B-C | Base | Collector | 0.5–0.7V | | PNP (B778) E-B | Emitter | Base | 0.5–0.7V | | PNP (B778) C-B | Collector | Base | 0.5–0.7V |
: Oleskan pasta silikon penghantar panas secara merata namun tipis di antara bodi transistor, isolator, dan heatsink . Langkah ini krusial untuk membuang panas secara instan. Berapa yang digunakan pada power amplifier Anda
Jika Anda ingin, saya bisa:
If you cannot find the original KEC or SavantIC versions, the following transistors are often used as substitutes due to similar power ratings and voltage tolerances:
With a maximum power dissipation of (at case temp 25°C), a large heatsink is mandatory. For stereo 100W/channel amplifiers: