When selecting an equivalent, in the new transistor's datasheet, as it may differ from the original. Additionally, watch for the "hFE" classification (e.g., -R or -O ), as this indicates the gain range for specific applications.
): 55 to 160, typically categorized into ranks such as "R" (55–110) or "O" (80–160). 10 MHz to 12 MHz. Equivalents and Replacements (Persamaan)
| Parameter | Nilai Maksimal | | :--- | :--- | | Tegangan Kolektor-Emitter (VCEO) | -120 V | | Tegangan Kolektor-Basis (VCBO) | -120 V | | Arus Kolektor Maksimal (IC) | -10 A | | | 80 Watt | | Frekuensi Transisi (fT) | 10 MHz | | Gain (hFE) | 55 – 160 | | Kemasan | TO-3PML | persamaan transistor d998 b778 install
: A rugged alternative in a TO-247 package. They handle more current but may require slight lead-bending to fit the original PCB holes.
Most D998/B778 setups use the heatsink as a common ground or a different voltage rail. You use a Mica insulator or a Silicone pad between the transistor and the heatsink. When selecting an equivalent, in the new transistor's
Clean the heatsink thoroughly. Remove all old, crusty thermal paste using isopropyl alcohol. Any debris or "burrs" on the metal can puncture the insulation and cause a short circuit. Step 2: Insulation (The Mica Sheet)
He pulled his soldering iron, a well-worn Weller, from its holder. The tip was tin-plated and shiny. He touched it to the lead and fed in the rosin-core solder. Pssshhh. The smoke curled up, acrid and familiar. He watched the solder flow, creating a shiny, concave fillet—the sign of a perfect joint. 10 MHz to 12 MHz
Pasangan transistor final 2SD998 (NPN) dan 2SB778 (PNP) sering digunakan pada power amplifier mobil, sistem stereo rumah, dan perangkat audio berdaya menengah. Ketika salah satu atau kedua transistor ini rusak, Anda membutuhkan komponen pengganti yang memiliki spesifikasi setara atau lebih tinggi agar performa sirkuit tidak menurun. Spesifikasi Utama Transistor D998 dan B778
If you cannot find the original KEC or Savantic parts, you can use the following equivalents. When choosing a substitute, ensure it has an equal or higher cap V sub cap C cap E cap O end-sub cap I sub cap C www.bustedgear.com D718 / B688