Specs side by side
2 parts compared · 14 differing specs across 14 total parameters.
| Parameter | ||
|---|---|---|
| Supply voltage | Same class; verify the exact grade against the schematic. | - |
| Memory & Peripherals | Where backorder lists push a repair toward "any big TO-247 transistor", this pair is the one that keeps the Darlington drive contract - the non-Darlington alternatives do not. | - |
| Case | TO-247 | TO-247 (formerly TO-218) |
| Compatibility Level | 100% Drop-in (Zero Code Change) | - |
| Component Category | - | Darlington Power Transistors |
| Core & Architecture | The onsemi Darlingtons that carry the same function in current production: TO-247 complementary pair with the gain contract intact - the practical supply when TIP142 allocation is thin. | - |
| Firmware Notes | The substitution rule in one line: same body, same drive expectations, same polarity pairing (6284 NPN with 6287 PNP) - fit them as the pair the circuit was drawn around. | - |
| Hardware Notes | TO-247 land shared with the TIP14x row. | - |
| Lead Time Advantage | Shenzhen Spot Stock (24-48h Dispatch) | - |
| Market Reality | - | The TIP142 NPN and TIP147 PNP are the 10A complementary Darlingtons of audio output stages, solenoid and relay drivers, and the lamp and motor outputs of industrial gear: 100V, 10A, 125W in the TO-247 body, with a current gain of 1000 that turns a milliampere of base current into amperes at the load. That gain is the entire design contract - circuits built around it deliver almost no drive, which is why the classic repair failure happens when a well-meaning substitution fits a genuine, expensive, "better" power transistor with gain 100 and the output stage quietly starves. Since the old TO-218 body was discontinued in 2012, TO-247 is the only current home, including the onsemi MJH6284/MJH6287 pair. |
| Reference Part | TIP142 / TIP147 | - |
| Role In Circuit | - | Original Reference Part |
| Sourcing Advantage | Stocked; the honest current-production answer. | - |
| Sourcing Status | - | Active Shenzhen Spot Sourcing (24–48h) |
Parts
- MJH6284G / MJH6287G · onsemi
- TIP142 / TIP147 · onsemi