The and B778 (2SB778) are a popular pair of silicon bipolar power transistors specifically designed to work together as a complementary pair . They are most commonly found in the output stages of high-fidelity audio amplifiers, such as car power amplifiers and home theater systems. Key Technical Specifications
If you are repairing a circuit and cannot find the original D998 or B778, technicians often look for "persamaan" or equivalents with matching or superior power ratings. Common substitutes and variants include:
| Parameter | Symbol | 2SD998 (NPN) | 2SB778 (PNP) | Unit | | :--- | :--- | :--- | :--- | :--- | | Collector-Base Voltage | (V_CBO) | 120 | -120 | V | | Collector-Emitter Voltage | (V_CEO) | 120 | -120 | V | | Emitter-Base Voltage | (V_EBO) | 5 | -5 | V | | Collector Current (DC) | (I_C) | 10 | -10 | A | | Collector Current (Pulse) | (I_CP) | 15 | -15 | A | | Base Current | (I_B) | 1 | -1 | A | | Collector Dissipation | (P_C) | 80 | 80 | W | | Junction Temperature | (T_j) | 150 | 150 | °C | | Storage Temperature | (T_stg) | -55 to 150 | -55 to 150 | °C | Persamaan Transistor D998 B778
To find a suitable replacement, it's crucial to first understand the original specifications of these components. Both are designed for general-purpose power amplification and are often found in the output stages of audio equipment like the "KTV 908USB" amplifier, where they work together to drive the speakers.
: A popular high-power alternative often found in heavier duty audio amplifiers. TIP35C / TIP36C The and B778 (2SB778) are a popular pair
When D998 or B778 transistors fail, it is usually due to one of three causes:
Dari data di atas, dapat dilihat bahwa transistor D998 dan B778 memiliki karakteristik yang sama. Oleh karena itu, transistor D998 dan B778 dapat digunakan sebagai pengganti satu sama lain. Common substitutes and variants include: | Parameter |
The most commonly cited equivalents for these transistors are the and 2SB817 (PNP) .
Transistor dan 2SB778 (B778) adalah pasangan komplementer transistor daya bipolar (BJT) yang sering digunakan pada tahap output amplifier audio berdaya tinggi. Spesifikasi Utama
Bisa digunakan untuk amplifier berdaya lebih rendah atau menengah (karena PCcap P sub cap C hanya 90W tapi arus maksimal lebih kecil daripada 2SD998).