AMS1117-3.3(SOT89-3)
TDSEMIC
Needs validationmedium risk
Potential substitute in the same package, but has a lower max input voltage and requires pinout verification.
Best Alternatives to ME6118A33PG
ME6118A33PG is a 3.3V, 1A LDO regulator in a SOT89-3 package. Alternatives exist, but require careful review of package compatibility and electrical parameters like max input voltage.
AI replacement insight
Package riskhigh
Most alternatives are in different packages, requiring a PCB redesign.
Electrical riskmedium
Candidates may have different max input voltage, dropout, or quiescent current.
Can it be replaced directly?
Direct replacement for ME6118A33PG should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most direct path is AMS1117-3.3(SOT89-3), if the system's input voltage never exceeds 15V. All other options require a board redesign.
Main risk
The primary risk is physical incompatibility, as most alternatives are in different packages. For the same-package option, the risk is a lower input voltage rating.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | ME6118A33PG | AMS1117-3.3(SOT89-3) | AMS1117-3.3V | LM29150RS-3.3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT89-3 | SOT89-3 | SOT-223 | TO-252 (DPAK) | SOT89-3 / SOT-223 / TO-252 (DPAK) / SOT-223-3L — Package matches target.; AMS1117-3.3V: Different package requires PCB redesign.; LM29150RS-3.3: Different package requires PCB redesign.; LM2940S-3.3: Different package requires PCB redesign. |
| Voltage | 18V | 15V | 18.0V | 60V | 15V / 18.0V / 60V / 26V — Candidate has lower max input voltage.; AMS1117-3.3V: Max input voltage matches.; LM29150RS-3.3: Significantly higher max input voltage.; LM2940S-3.3: Candidate has higher max input voltage. |
| Current | 1.0A | 1.0A | 1.0A | 1.5A | 1.0A / 1.5A — Output current matches.; AMS1117-3.3V: Output current matches.; LM29150RS-3.3: Higher output current capability.; LM2940S-3.3: Output current matches. |
| Pinout | GND, VOUT, VIN (Standard) | Unknown | - | - | Unknown — Pinout is likely compatible but not verified from datasheet. |
Application & sourcing insights
Questions & answers
Verified drop-in options for ME6118A33PG are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.