Is there a pin-compatible replacement for LM29150RS-5.0?

Several parts like BL8072COTR50 and 78D05 share the TO-252 package, making them mechanically compatible. However, their electrical characteristics differ, so pinout and function must be verified against the datasheet before use.

What risks should I check before replacing LM29150RS-5.0?

Key risks are: 1) Maximum input voltage (some alternatives are lower than 26V), 2) Output current (some are below 1.5A), and 3) Dropout voltage (many have a much higher dropout, affecting low Vin-Vout operation).

LM29150RS-5.0 Alternatives, Datasheet & Cross Reference | Tak Cheong Electronics (Holdings) Co., Limited

Finding a substitute for the LM29150RS-5.0 5V LDO regulator requires checking key parameters like input voltage, output current, and dropout voltage. While several alternatives exist in the same TO-252 package, all require careful review due to electrical differences.

AI replacement insight

Electrical riskhigh

Candidates have different Vin, Iout, and Vdo specs.

Package risklow

Viable candidates share the TO-252 package.

Sourcing riskmedium

Candidates are from various manufacturers; availability may differ.

Can it be replaced directly?

No direct, 1-for-1 replacement for the LM29150RS-5.0 was found. All reviewed candidates have significant parametric differences requiring engineering review.

Best replacement path

Select a candidate based on your circuit's most critical parameter. If input voltage is under 18V, BL8072COTR50 may work. If current draw is under 1A, AMS1117CD-5.0 is an option.

Main risk

The main risk is electrical incompatibility, specifically lower maximum input voltage or a much higher dropout voltage, which could cause device failure or circuit malfunction.

Recommended alternatives

Parametric alternative with higher output current but lower max input voltage and a narrower temperature range.

View details

Alternative comparison matrix

Feature / factor	LM29150RS-5.0	BL8072COTR50	AMS1117CD-5.0	78D05	Compatibility / risk
Package	TO-252	TO-252	TO-252	TO-252	TO-252 — Package matches.; AMS1117CD-5.0: Package matches.; 78D05: Package matches.
Voltage	0.35V @ 1.5A	1.0V @ 2A	1.3V @ 1A	2V @ 1A	1.0V @ 2A / 1.3V @ 1A / 2V @ 1A — Dropout voltage is significantly higher.; AMS1117CD-5.0: Dropout voltage is higher.; 78D05: Not an LDO. Dropout voltage is extremely high.
Current	1.5A	2.0A	1.0A	1.5A	2.0A / 1.0A / 1.5A — Output current is higher.; AMS1117CD-5.0: Output current is lower.; 78D05: Output current matches.
Temperature	-40°C to 125°C	-40°C to 85°C	-	0°C to 125°C	-40°C to 85°C / 0°C to 125°C — Operating temperature range is narrower.; 78D05: Operating temperature range is narrower.

Application & sourcing insights

Questions & answers

No single best alternative was identified. The most suitable option depends on your specific circuit requirements for input voltage, output current, and dropout voltage. All candidates require careful engineering review.