Is there a pin-compatible replacement for NCP1117ST50T3G?

Yes, several regulators like the NCV1117ST50T3G share the SOT-223 package and a standard pinout. However, you must always verify the pin functions (Vin, Vout, GND/ADJ) in the datasheet before substitution.

What risks should I check before replacing NCP1117ST50T3G?

Key risks include lower maximum input voltage, reduced output current capability, and different thermal performance. Also, ensure the package and pinout are identical to avoid board redesign.

NCP1117ST50T3G Alternatives, Datasheet & Cross Reference | onsemi

NCP1117ST50T3G is a popular 5.0V, 1.0A low-dropout (LDO) linear regulator in a SOT-223 package. When seeking alternatives, it's crucial to match the package, pinout, and key electrical ratings like input voltage and output current.

AI replacement insight

Electrical riskmedium

Many alternatives have lower max input voltage ratings. Always verify against your application's supply.

Package risklow

SOT-223 is a standard package, but pinout must be confirmed across different manufacturers.

Sourcing risklow

The 1117-5.0 regulator family is widely multi-sourced, providing many sourcing options.

Can it be replaced directly?

The NCV1117ST50T3G is a direct upgrade. Other 1117-series regulators in SOT-223 are potential functional alternatives but require careful review of input voltage and output current ratings.

Best replacement path

Upgrade to the automotive-qualified NCV1117ST50T3G for higher reliability with matching electricals.

Main risk

The primary risk when substituting is using a part with a lower maximum input voltage or output current rating, which can lead to device failure.

Recommended alternatives

Automotive-grade upgrade from the same manufacturer with identical key electrical ratings and package.

View details

Alternative comparison matrix

Feature / factor	NCP1117ST50T3G	NCV1117ST50T3G	ME6118A50B3G	Compatibility / risk
Package	SOT-223	SOT-223	SOT-223	SOT-223 — Package matches target.; ME6118A50B3G: Package matches target.
Voltage	20V	20V	18V	20V / 18V — Max input voltage matches.; ME6118A50B3G: Max input voltage is lower than target.
Current	1.0A	1.0A	1.0A	1.0A — Output current matches.; ME6118A50B3G: Output current matches.
Application	Commercial	AEC-Q100	-	AEC-Q100 — Automotive grade offers higher reliability.

Application & sourcing insights

Questions & answers

The best alternative is the NCV1117ST50T3G from onsemi. It is the automotive-grade version of the same part, offering higher reliability with identical key specifications and package.