The D998/B778 are but still available as NOS (New Old Stock) from specialized vendors. If unavailable, consider:
| Parameter | Condition | 2SD998 (NPN) | 2SB778 (PNP) | Unit | | :--- | :--- | :--- | :--- | :--- | | | (V_CB=120V, I_E=0) | max 10 | max -10 | µA | | Emitter Cutoff Current | (V_EB=5V, I_C=0) | max 10 | max -10 | µA | | DC Current Gain (hFE) | (V_CE=4V, I_C=1A) | 50 to 160 | 50 to 160 | - | | Collector-Emitter Saturation Voltage | (I_C=7A, I_B=0.35A) | max 1.0 | max -1.0 | V | | Base-Emitter Voltage | (V_CE=4V, I_C=1A) | typ 1.0 | typ -1.0 | V | | Transition Frequency (fT) | (V_CE=10V, I_C=0.5A) | typ 15 | typ 15 | MHz | | Thermal Resistance | Junction to case | 1.56 | 1.56 | °C/W |
Finding an exact equivalent ("persamaan") for these transistors requires a deep understanding of their voltage, current, and thermal dissipation ratings, as direct replacements can sometimes be difficult to source due to obsolescence or regional availability issues.
Keduanya sengaja dirancang berpasangan untuk digunakan pada sirkuit penguat daya (power amplifier) dengan sistem Push-Pull . Sistem ini membagi tugas di mana satu transistor menangani siklus positif dan transistor pasangannya menangani siklus negatif. 📊 Spesifikasi Utama D998 dan B778
dengan kualitas respon frekuensi audio yang jauh lebih jernih dan detail.
user wants a long article about "Persamaan Transistor D998 B778". This likely refers to replacement or equivalent transistors for the 2SD998 and 2SB778 pair. I need to provide a comprehensive article in Indonesian. I'll search for datasheets, equivalents, and relevant information. search results provide some information. I need to gather more details on equivalents, specifications, and applications. I'll open some of the relevant links. search results provide data sheets, equivalents, and some forum discussions. I'll also search for "2SD998 2SB778 equivalent pair" to find more information. search results provide enough information to write a comprehensive article. I'll structure it with an introduction, specifications, complementary pairs, applications, equivalents, and a conclusion. I'll cite the sources appropriately. Now I'll start writing.angan transistor D998 (2SD998) dan B778 (2SB778) adalah komponen kelas kakap yang telah lama menjadi tulang punggung berbagai perangkat audio, mulai dari amplifier mobil hingga sistem Hi-Fi rumahan. Pasangan transistor komplementer NPN dan PNP ini dikenal karena kehandalan dan kemampuannya menghasilkan suara jernih dengan daya yang besar. Artikel ini akan mengupas tuntas spesifikasi teknis, aplikasi, serta daftar lengkap transistor pengganti (persamaan) untuk D998 dan B778.
2SB778 2SD998 Audio amplifier transistor B778 D998 - Alibaba.com
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.
The D998/B778 are but still available as NOS (New Old Stock) from specialized vendors. If unavailable, consider:
| Parameter | Condition | 2SD998 (NPN) | 2SB778 (PNP) | Unit | | :--- | :--- | :--- | :--- | :--- | | | (V_CB=120V, I_E=0) | max 10 | max -10 | µA | | Emitter Cutoff Current | (V_EB=5V, I_C=0) | max 10 | max -10 | µA | | DC Current Gain (hFE) | (V_CE=4V, I_C=1A) | 50 to 160 | 50 to 160 | - | | Collector-Emitter Saturation Voltage | (I_C=7A, I_B=0.35A) | max 1.0 | max -1.0 | V | | Base-Emitter Voltage | (V_CE=4V, I_C=1A) | typ 1.0 | typ -1.0 | V | | Transition Frequency (fT) | (V_CE=10V, I_C=0.5A) | typ 15 | typ 15 | MHz | | Thermal Resistance | Junction to case | 1.56 | 1.56 | °C/W |
Finding an exact equivalent ("persamaan") for these transistors requires a deep understanding of their voltage, current, and thermal dissipation ratings, as direct replacements can sometimes be difficult to source due to obsolescence or regional availability issues.
Keduanya sengaja dirancang berpasangan untuk digunakan pada sirkuit penguat daya (power amplifier) dengan sistem Push-Pull . Sistem ini membagi tugas di mana satu transistor menangani siklus positif dan transistor pasangannya menangani siklus negatif. 📊 Spesifikasi Utama D998 dan B778
dengan kualitas respon frekuensi audio yang jauh lebih jernih dan detail.
user wants a long article about "Persamaan Transistor D998 B778". This likely refers to replacement or equivalent transistors for the 2SD998 and 2SB778 pair. I need to provide a comprehensive article in Indonesian. I'll search for datasheets, equivalents, and relevant information. search results provide some information. I need to gather more details on equivalents, specifications, and applications. I'll open some of the relevant links. search results provide data sheets, equivalents, and some forum discussions. I'll also search for "2SD998 2SB778 equivalent pair" to find more information. search results provide enough information to write a comprehensive article. I'll structure it with an introduction, specifications, complementary pairs, applications, equivalents, and a conclusion. I'll cite the sources appropriately. Now I'll start writing.angan transistor D998 (2SD998) dan B778 (2SB778) adalah komponen kelas kakap yang telah lama menjadi tulang punggung berbagai perangkat audio, mulai dari amplifier mobil hingga sistem Hi-Fi rumahan. Pasangan transistor komplementer NPN dan PNP ini dikenal karena kehandalan dan kemampuannya menghasilkan suara jernih dengan daya yang besar. Artikel ini akan mengupas tuntas spesifikasi teknis, aplikasi, serta daftar lengkap transistor pengganti (persamaan) untuk D998 dan B778.
2SB778 2SD998 Audio amplifier transistor B778 D998 - Alibaba.com
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.