Specs side by side
2 parts compared · 14 differing specs across 14 total parameters.
| Parameter | ||
|---|---|---|
| Supply voltage | Cathode voltage 36V class; cathode current 1mA minimum - the same bias requirement. | - |
| Memory & Peripherals | Identical divider-based adjustment; used the same way in opto-isolated feedback loops. | - |
| Case | SOT-23 / TO-92 / SOIC-8 | SOT-23 / TO-92 / SOT-89 / SOIC-8 |
| Compatibility Level | 100% Drop-in (Zero Code Change) | - |
| Component Category | - | Programmable Shunt Voltage References |
| Core & Architecture | The same 2.495V adjustable shunt regulator under the LM numbering; grades and packages mirror the TL431 line. | - |
| Firmware Notes | Drop-in within the same package and pinout. As always with the 431 family, confirm the package drawing: family pinouts vary by package code, not by brand name alone. | - |
| Hardware Notes | Choose the package that matches the original footprint (SOT-23, TO-92, SOIC-8) and confirm pin numbering from the vendor drawing. | - |
| Lead Time Advantage | Shenzhen Spot Stock (24-48h Dispatch) | - |
| Market Reality | - | The TL431 sits in the feedback loop of a large share of the flyback supplies ever built - one of the highest-volume analog parts in existence. Genuine supply is never the issue. The issues are three: the tolerance grade (2 percent / 1 percent / 0.5 percent) that decides regulation accuracy, the pinout that differs between TL431 and TL432 and between packages, and the lookalike low-voltage parts (TLV431, LMV431) that are not drop-ins at all. A repair that fits the right part with the wrong orientation simply does not regulate. |
| Reference Part | TL431 | - |
| Role In Circuit | - | Original Reference Part |
| Sourcing Advantage | Branded stock with full documentation; the choice where quality paperwork matters. | - |
| Sourcing Status | - | Active Shenzhen Spot Sourcing (24–48h) |