ME6231A50M3G
MICRONE
Needs validationmedium risk
Electrically identical to the target but in a different (SOT23-3) package, requiring a board layout change.
Best Alternatives to ME6231A50PG
The ME6231A50PG is a high-performance 500mA LDO in a SOT-89-3 package, notable for its very low 1.8µA quiescent current and high accuracy. Finding a direct replacement requires careful matching of these key performance parameters.
AI replacement insight
Electrical riskhigh
Most alternatives have worse dropout and quiescent current.
Package riskhigh
The best electrical match is in a different package.
Can it be replaced directly?
No direct drop-in replacement with identical performance is currently available. The ME6231A50M3G is the same chip in a different package.
Best replacement path
Use ME6231A50M3G if the PCB can be modified; otherwise, evaluate ME6119A50PG with performance derating.
Main risk
The primary risk is finding a part that matches both the SOT-89-3 package and the target's excellent low quiescent current and low dropout performance.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | ME6231A50PG | ME6231A50M3G | ME6119A50PG | LM1117F-5.0 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89-3 | SOT23-3 | SOT-89-3 | SOT-89-3 | SOT23-3 / SOT-89-3 — Different package requires PCB redesign.; ME6119A50PG: Package matches target.; LM1117F-5.0: Package matches target. |
| Electricals | Matched | Matched | - | - | Matched — Key electrical parameters (Vout, Iout, Vin, Iq, Accuracy) match. |
| Pinout | SOT-89-3 pinout | SOT23-3 pinout | - | - | SOT23-3 pinout — Pin functions are the same but physical layout differs. |
| Thermal | SOT-89-3 | Weaker | - | - | Weaker — SOT23-3 has higher thermal resistance; may require derating. |
| Current | 0.5A | - | 0.4A | 1.0A | 0.4A / 1.0A — Output current is lower than target.; LM1117F-5.0: Higher output current capability. |
| Quiescent Current | 1.8µA | - | ~50µA | mA-range | ~50µA / mA-range — Quiescent current is significantly higher.; LM1117F-5.0: Quiescent current is orders of magnitude higher. |
| Accuracy | ±1% | - | ±2% | - | ±2% — Output voltage accuracy is lower. |
| Voltage | 18V | - | - | 12V | 12V — Max input voltage is lower. |
| Dropout | 125mV @ 100mA | — | — | — | ~1.3V @ 1A — Dropout voltage is significantly higher. |
Application & sourcing insights
Questions & answers
The ME6231A50M3G is electrically identical but in a smaller SOT23-3 package, making it the best functional alternative if a PCB layout change is possible. For the same SOT-89-3 package, other options have performance trade-offs.