Specs side by side
2 parts compared · 3 differing specs across 5 total parameters.
| Parameter | ||
|---|---|---|
| Case | TO-3 (TO-204AA) | TO-3P(L) |
| Component Category | Power Bipolar Transistors (Linear / Audio) | Audio Power Transistors (Complementary Pair) |
| Market Reality | The 2N3055 NPN and its MJ2955 PNP complement are the linear power pair that ran regulator pass banks, audio output stages and industrial drive circuits for half a century: 60V, 15A, 115W in the TO-3 metal can whose body IS the collector. The family survives in original metal, in the plastic modernization (TIP3055 / TIP2955 in TO-247 at 90W) and in the modern higher-grade parts (2SC5200 / 2SA1943 class) - and the substitution traps scale with age: a mounting change disguised as an electrical equivalent, a dissipation derate hidden in the package, and a re-marking market that has targeted this exact can for decades. | The 2SC5200 (NPN) and 2SA1943 (PNP) pair is the default output stage of generations of audio amplifiers, and it is one of the most counterfeited transistor families in the world - relabeled and re-died parts circulate heavily through marketplaces. Genuine Toshiba supply continues under the TTC5200 / TTA1943 part numbers with identical ratings, and the ON Semiconductor (onsemi) NJW0281G / NJW0302G and MJL21194 / MJL21193 pairs are the established second sources. For repair desks the hard problem is not finding a part - it is finding one that is not a relabel. |
| Role In Circuit | Original Reference Part | Original Reference Part |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | Active Shenzhen Spot Sourcing (24–48h) |
Parts
- 2N3055 / MJ2955 · stmicroelectronics
- 2SC5200 / 2SA1943 · toshiba