Persamaan Transistor D998 B778
| Original | Type | Direct Substitute | Comments | | :--- | :--- | :--- | :--- | | | NPN | 2SD1559 | Higher voltage rating, pin compatible. | | | | 2SD2012 | Good modern replacement. | | | | TIP41C | Caution: Pinout is usually B-C-E (matches), but TIP41C is slightly less robust in gain linearity for Hi-Fi. | | 2SB778 | PNP | 2SB1106 | Complementary match to D1559. | | | | 2SB1382 | Good modern replacement. | | | | TIP42C | Caution: Pinout is usually B-C-E (matches). Popular but lower audio quality. |
Umumnya menggunakan paket TO-3P atau TO-3PF (kemasan plastik terisolasi). Daftar Persamaan Transistor D998 B778 Terbaik
Catatan: Nilai di atas adalah kisaran umum—untuk penggunaan aman, selalu rujuk datasheet pabrikan untuk varian spesifik. Persamaan Transistor D998 B778
: A popular high-power alternative often found in heavier duty audio amplifiers. TIP35C / TIP36C
Perhatikan bahwa nilai tegangan dan arus pada B778 memiliki polaritas negatif karena merupakan transistor PNP. Kedua transistor ini saling melengkapi dengan sempurna: D998 menangani sinyal setengah gelombang positif, sementara B778 menangani setengah gelombang negatif. | Original | Type | Direct Substitute |
The are robust audio output transistors, but due to obsolescence, the best persamaan for most applications is the 2SC5200 (NPN) and 2SA1943 (PNP) pair from Toshiba (or equivalent brands like KEC, Fairchild/Onsemi). For higher-voltage or professional amps, use MJL4281A/MJL4302A . Always replace both channels with the same matched pair and verify your amplifier’s rail voltage before substituting.
If original D998/B778 are unavailable, use these complementary pairs (verify pinouts and hFE): | | 2SB778 | PNP | 2SB1106 | Complementary match to D1559
Selalu ganti sepasang (NPN dan PNP) jika salah satu rusak, untuk memastikan keseimbangan beban pada amplifier.
2. Pasangan TIP3055 dan TIP2955 (Alternatif Kemasan TO-247/TO-3P) TIP3055 (NPN) & TIP2955 (PNP)
