Specs side by side
2 parts compared · 13 differing specs across 14 total parameters.
| Parameter | ||
|---|---|---|
| Supply voltage | - | VDRM/VRRM 600V versus 400V; ITSM 20A class; same TO-202AA body. |
| Memory & Peripherals | - | Used in identical circuit positions where the mains-derived peak runs closer to the 400V limit. |
| Compatibility Level | - | 100% Drop-in (Zero Code Change) |
| Component Category | Thyristors (Sensitive-Gate SCR) | - |
| Core & Architecture | - | The 600V member of the same sensitive-gate SCR family: 2A IT(RMS) with the same microamp-class gate trigger, rated further up the voltage ladder. |
| Firmware Notes | - | The clean substitution when the original 2P4M ran at the edge of its voltage rating (small chargers on noisy mains). Gate behavior is the same family, so trigger networks work unchanged. |
| Hardware Notes | - | TO-202AA package, lead arrangement per the family drawing - confirm the specific manufacturer illustration before insertion. |
| Lead Time Advantage | - | Shenzhen Spot Stock (24-48h Dispatch) |
| Market Reality | The 2P4M is the little SCR of appliance and small-charger circuits: touch lamps, fan controllers, dimmers, battery chargers and protection latching. The original NEC part is obsolete at the source, and the market is now full of second-source 2P4M markings from numerous fabs - which is generally fine for voltage and current, but the parameter these circuits live on is gate sensitivity: the 2P4M triggers in the microamp range, and a generic "2A/400V thyristor" with a heavier gate simply will not fire in a touch circuit or dimmer designed around it. | - |
| Reference Part | - | 2P4M |
| Role In Circuit | Original Reference Part | - |
| Sourcing Advantage | - | Stocked as the upgrade grade in the same form factor. |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | - |
| Case | TO-202AA | TO-202AA |