Is there a pin-compatible replacement for MC78L05ABDR2G?

The MC78L05ACDR2G shares the same 8-SOIC package and is expected to be pin-compatible. Other alternatives from different manufacturers, like the UA78L05ACDR, are also in SOIC-8 packages but require datasheet verification to confirm the exact pinout and package dimensions.

What risks should I check before replacing MC78L05ABDR2G?

Before replacing MC78L05ABDR2G, you must verify three key parameters: 1) Maximum Input Voltage, as many alternatives are rated for 20V instead of 30V. 2) Minimum Operating Temperature, as the target is rated for -40°C. 3) Package details, to ensure there is no unexpected exposed pad.

MC78L05ABDR2G Alternatives, Datasheet & Cross Reference | onsemi

Finding a substitute for the MC78L05ABDR2G 5V linear regulator requires careful checking of key parameters like input voltage and temperature range. While several alternatives exist, they often come with parametric differences that must be evaluated for your specific application.

AI replacement insight

Electrical riskmedium

Many alternatives have lower max input voltage (20V vs 30V).

Package risklow

The 8-SOIC package is common, but details like exposed pads must be checked.

Can it be replaced directly?

No perfect drop-in replacement was found. The closest option, MC78L05ACDR2G, has a more limited operating temperature range.

Best replacement path

Use MC78L05ACDR2G if the application's minimum temperature is above 0°C. Otherwise, a redesign with a different part may be needed.

Main risk

The primary risk is using a substitute with a lower maximum input voltage or a narrower temperature range, which could lead to device failure in the field.

Recommended alternatives

A very close alternative from the same series, but with a narrower operating temperature range.

View details

Alternative comparison matrix

Feature / factor	MC78L05ABDR2G	MC78L05ACDR2G	UA78L05ACDR	Compatibility / risk
Temperature	-40°C to +125°C	0°C to +125°C	0°C to 125°C	0°C to +125°C / 0°C to 125°C — Candidate has a narrower commercial temp range.; UA78L05ACDR: Minimum operating temperature is higher.
Package	8-SOIC	8-SOIC	SOIC-8	8-SOIC / SOIC-8 — Same package family, likely compatible.; UA78L05ACDR: Package appears similar but requires verification.
Voltage	30V	30V	20V	30V / 20V — Max input voltage is identical.; UA78L05ACDR: Maximum input voltage is significantly lower.
Current	0.1A	0.1A	0.1A	0.1A — Output current is identical.; UA78L05ACDR: Output current matches.

Application & sourcing insights

Questions & answers

The MC78L05ACDR2G from the same onsemi family is the closest functional match, but it has a narrower operating temperature range (0°C to +125°C). This is the best option if your application does not require operation below 0°C.