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Best Alternatives to LM1117GSF-3.3

Package: SOT-23Tak Cheong Electronics (Holdings) Co., LimitedPower Management (PMIC)Output Voltage: 3.3 VOutput Current: 300 mAInput Voltage (Max): 20 VPSRR: 75 dBOutput Type: Fixed

LM1117GSF-3.3 is a 3.3V, 300mA LDO voltage regulator in a SOT-23 package. This page reviews potential alternatives, considering electrical parameters and physical compatibility.

AI replacement insight

Package riskhigh

Many alternatives are in different packages (DPAK, SOT-223) and require board redesign.

Electrical riskmedium

Some candidates have lower max input voltage or narrower temperature ranges.

Can it be replaced directly?

Direct replacement for LM1117GSF-3.3 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

ME6214A33M3G is a strong candidate with a matching package and key specs, but requires pinout verification and has a slightly lower max input voltage.

Main risk

The main risks are package mismatches for most alternatives, or reduced input voltage and temperature ratings for others. Pinout must always be verified.

Recommended alternatives

2
ME6214A33M3G package
ME6214A33M3G

MICRONE

Needs validationlow risk

Strong candidate in a compatible package with matching specs; requires pinout verification.

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Alternative comparison matrix

Feature / factorLM1117GSF-3.3ME6214A33M3GHXY6206I-3.3Alt 3Compatibility / risk
PackageSOT-23SOT23-3SOT-23SOT23-3 / SOT-23 — Package is form-fit compatible, but pinout requires verification.; HXY6206I-3.3: Package matches, but pinout requires verification.
Voltage20V18V8V18V — Slightly lower max input voltage.; HXY6206I-3.3: Significantly lower max input voltage.
Current0.3A0.3A0.3A0.3A — Output current matches.; HXY6206I-3.3: Output current matches.
Temperature-40°C to 125°C-40°C to 125°C-40°C to 85°C-40°C to 125°C / -40°C to 85°C — Operating temperature range matches.; HXY6206I-3.3: Reduced operating temperature range.

Application & sourcing insights

Questions & answers

Verified drop-in options for LM1117GSF-3.3 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.