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Best Alternatives to SS36 SMB

Package: SMB (DO-214AA)TWGMCDiodes - Rectifiers - SingleDiode Type: SchottkyVoltage - DC Reverse (Vr) (Max): 60 VCurrent - Average Rectified (Io): 3 AVoltage - Forward (Vf) (Max) @ If: 0.7 V @ 3 ACurrent - Reverse Leakage @ Vr: 0.5 mA @ 60 V

The SS36 SMB is a popular 60V, 3A Schottky rectifier in a standard SMB package, used in power supplies and protection circuits. Several pin-compatible upgrades and alternatives are available, offering improved performance or higher stress ratings.

AI replacement insight

Electrical riskmedium

Candidates with higher forward voltage (Vf) or reverse leakage (Ir) require careful review.

Package risklow

All recommended candidates use the same SMB package, ensuring mechanical compatibility.

Can it be replaced directly?

Yes, several direct replacements exist. UMW SS36B is a very close pin-compatible match, while SS56(SMB) is a pin-compatible upgrade.

Best replacement path

The best replacement is SS56(SMB) from the same manufacturer, which offers a higher current rating (5A) and lower reverse leakage with a comparable forward voltage.

Main risk

The primary risk when substituting is an increase in forward voltage (Vf), which leads to lower efficiency and higher heat dissipation.

Recommended alternatives

5
SS56(SMB) package
SS56(SMB)

TWGMC

Needs validationlow risk

An excellent upgrade with a higher 5A current rating and improved reverse leakage in the same SMB package.

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Alternative comparison matrix

Feature / factorSS36 SMBSS56(SMB)UMW SS36BSS310SMBCompatibility / risk
PackageSMB (DO-214AA)SMB (DO-214AA)SMB (DO-214AA)SMB (DO-214AA)SMB (DO-214AA) — Mechanically compatible.; UMW SS36B: Mechanically compatible.; SS310SMB: Mechanically compatible.; UMW SS510B: Mechanically compatible.
Voltage60V60V60V100V60V / 100V — Same voltage rating, no additional margin.; UMW SS36B: Identical voltage rating.; SS310SMB: Higher voltage rating provides more margin.; UMW SS510B: Higher voltage rating provides more margin.
Current3A5A3A3A5A / 3A — Higher current rating provides more margin.; UMW SS36B: Identical current rating.; SS310SMB: Identical current rating.; UMW SS510B: Higher current rating provides more margin.
Vf0.7V @ 3A0.7V @ 5A0.75V @ 3A0.85V @ 3A0.7V @ 5A / 0.75V @ 3A / 0.85V @ 3A — Similar forward voltage ensures comparable efficiency.; UMW SS36B: Slightly higher Vf may increase power loss.; SS310SMB: Higher Vf will increase power dissipation.; UMW SS510B: Higher Vf will increase power dissipation.
Ir0.5mA @ 60V0.3mA @ 60V--0.3mA @ 60V — Lower reverse leakage is an improvement.

Application & sourcing insights

Questions & answers

The best alternative is SS56(SMB). It is made by the same manufacturer and offers a higher current rating (5A vs 3A) and lower reverse leakage in the same SMB package, making it a robust upgrade.