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Best Alternatives to GN1117-3.3V

Package: SOT223 / TO252 / SOT89-3LMIPMIC - Voltage Regulators - LinearOutput Voltage: 3.3 VOutput Current: 1 ADropout Voltage: 1.45 VInput Voltage Max: 15 VOperating Temperature: -40°C to 85°C

The GN1117-3.3V is a versatile 1A low-dropout (LDO) linear regulator providing a fixed 3.3V output. It is offered in popular SOT223, TO252, and SOT89-3L packages, making it suitable for a wide range of applications from consumer electronics to industrial systems.

AI replacement insight

Package riskmedium

Target has multiple packages; candidate must match the specific variant used.

Electrical risklow

Key specs are common, but secondary parameters like dropout and quiescent current differ.

Firmware risklow

LDOs are analog components and typically do not require firmware changes.

Can it be replaced directly?

Direct replacement for GN1117-3.3V should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

For a direct replacement, start with candidates in the same package, like CJU1117B-3.3 for the TO-252 version. For an upgrade, consider BL8072COTR33.

Main risk

The primary risk is pinout incompatibility even within the same package type (e.g., SOT223). Different pin assignments (VIN, VOUT, GND) are common across manufacturers.

Recommended alternatives

5
LM1086T-3.3 package
LM1086T-3.3

HGSEMI

Needs validationhigh risk

A functional alternate with higher current/voltage ratings but in a different, non-SMD package (TO-220).

View details

Alternative comparison matrix

Feature / factorGN1117-3.3VLM1086T-3.3BL8072COTR33CJU1117B-3.3Compatibility / risk
PackageSOT223 / TO252 / SOT89-3LTO-220-3TO-252TO-252-2LTO-220-3 / TO-252 / TO-252-2L / SOT223 — Different form factor (Through-Hole vs. SMD).; BL8072COTR33: Matches one of the target's packages.; CJU1117B-3.3: Matches one of the target's packages.; SSP7903P33FR: Matches one of the target's packages.
Voltage15V20V18V15V20V / 18V / 15V / 40V — Higher max input voltage.; BL8072COTR33: Higher max input voltage provides more margin.; CJU1117B-3.3: Max input voltage matches.; SSP7903P33FR: Higher max input voltage provides more design margin.
Current1.0A1.5A2.0A1.0A1.5A / 2.0A / 1.0A — Higher output current capability.; BL8072COTR33: Higher output current provides more headroom.; CJU1117B-3.3: Output current matches.; SSP7903P33FR: Output current matches.
PinoutStandard LDO pinout-UnknownUnknownUnknown — Pinout must be verified from datasheet.; CJU1117B-3.3: Pinout must be verified from datasheet.; SSP7903P33FR: Pinout must be verified from datasheet.

Application & sourcing insights

Questions & answers

Verified drop-in options for GN1117-3.3V 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.