Is there a pin-compatible replacement for SS24-SMB?

While no replacements are guaranteed drop-in without verification, SS54B and STPS3L60U are highly likely to be pin-compatible. They are both 2-pin diodes in the same SMB (DO-214AA) package. Always confirm the datasheet pinout before soldering.

What risks should I check before replacing SS24-SMB?

Before replacing SS24-SMB, you must check the forward voltage (Vf) of the candidate. A higher Vf will increase power dissipation (heat) and lower efficiency. Also, verify that the voltage and current ratings of the replacement meet or exceed the original's 40V and 2A ratings.

SS24-SMB Alternatives, Datasheet & Cross Reference | GOODWORK

Find the best functional alternatives and replacements for the SS24-SMB, a 40V 2A Schottky diode in an SMB package. This guide provides verified options, risk analysis, and engineering comparisons to help you source a substitute.

AI replacement insight

Electrical riskmedium

Some alternatives have higher forward voltage (Vf), which will increase power loss. Must verify thermal performance.

Package risklow

All recommended alternatives use the same SMB (DO-214AA) package, ensuring physical compatibility.

Sourcing risklow

Multiple manufacturers produce suitable Schottky diodes in this package, providing a good supply base.

Can it be replaced directly?

Yes, several functional alternatives exist for the SS24-SMB. The best option is SS54B, which provides higher current capability in the same package with a nearly identical forward voltage.

Best replacement path

SS54B is the most suitable alternative, offering a current upgrade to 5A while matching the 40V rating and 0.55V forward voltage.

Main risk

The primary risk when substituting is an increase in forward voltage (Vf), which can reduce efficiency and increase heat dissipation.

Recommended alternatives

Offers higher current (5A vs 2A) in the same SMB package with a matched 40V rating and low forward voltage.

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Alternative comparison matrix

Feature / factor	SS24-SMB	SS54B	STPS3L60U	SS56B	Compatibility / risk
Package	SMB (DO-214AA)	SMB (DO-214AA)	SMB	DO-214AA (SMB)	SMB (DO-214AA) / DO-214AA (SMB) — Package is physically compatible.; STPS3L60U: Package is physically compatible.; SS56B: Package is physically compatible.
Voltage	40.0V	40.0V	60.0V	60.0V	40.0V / 60.0V — Voltage rating is identical.; STPS3L60U: Higher voltage rating provides more margin.; SS56B: Higher voltage rating provides more margin.
Current	2.0A	5.0A	3.0A	5.0A	5.0A / 3.0A — Higher current rating provides more margin.; STPS3L60U: Higher current rating provides more margin.; SS56B: Significantly higher current rating.
Forward Voltage	0.55V	~0.55V	0.61V	0.70V	~0.55V / 0.61V / 0.70V — Forward voltage is very similar, ensuring comparable efficiency.; STPS3L60U: Slightly higher Vf may increase power loss.; SS56B: Higher Vf will increase power loss.

Application & sourcing insights

Questions & answers

The best alternative to SS24-SMB is SS54B. It offers a higher current rating (5A vs 2A) in the same SMB package while matching the 40V reverse voltage and 0.55V forward voltage, ensuring similar performance with added robustness.