Is there a pin-compatible replacement for UMW SS26B?

Yes, several parts like UMW SS510B and TWGMC SS36 SMB use the same SMB package and 2-pin layout. However, electrical differences mean they are functional alternates, not drop-in replacements, and require engineering review.

What risks should I check before replacing UMW SS26B?

Key risks include: 1) Higher forward voltage (Vf) causing more heat. 2) Insufficient voltage rating (Vr) margin. 3) Higher reverse leakage current (Ir). 4) Narrower operating temperature range. Always verify these in your specific application.

UMW SS26B Alternatives, Datasheet & Cross Reference | UMW

UMW SS26B is a 60V, 2A Schottky diode in an SMB package. This page details verified alternatives, focusing on upgrades in voltage/current and functional replacements with different performance trade-offs.

AI replacement insight

Electrical riskmedium

Candidates have different Vf, Vr margin, and Ir.

Package risklow

All selected candidates use the standard SMB package.

Firmware risklow

Not applicable for this component type.

Sourcing risklow

Multiple vendors offer similar parts in this category.

Can it be replaced directly?

No perfect drop-in replacement is identified. UMW SS510B is a strong upgrade path, while TWGMC SS36 SMB is a close functional match, but both have different characteristics that require review.

Best replacement path

Upgrade to a higher voltage/current part like UMW SS510B for robustness, but verify thermal impact.

Main risk

The primary risk is thermal performance. Many alternatives have a higher forward voltage (Vf), which increases power dissipation and component temperature.

Recommended alternatives

Upgrade with higher voltage/current ratings but worse thermal performance.

View details

Alternative comparison matrix

Feature / factor	UMW SS26B	UMW SS510B	STPS5L60U	SS36 SMB	Compatibility / risk
Package	SMB	SMB	SMB	SMB (DO-214AA)	SMB / SMB (DO-214AA) — Form and fit match.; STPS5L60U: Form and fit match.; SS36 SMB: Form and fit match.
Voltage	60V	100V	60V	60V	100V / 60V — Increased reverse voltage rating provides more design margin.; STPS5L60U: No voltage margin over target; risky for some designs.; SS36 SMB: No voltage margin over target.
Current	2A	5A	5A	3A	5A / 3A — Higher current rating allows for use in more demanding applications.; STPS5L60U: Higher current rating.; SS36 SMB: Slightly higher current rating.
Forward Voltage	0.7V @ 2A	0.85V @ 3A	0.48V @ 5A	0.7V @ 3A	0.85V @ 3A / 0.48V @ 5A / 0.7V @ 3A — Higher Vf increases power loss; thermal analysis recommended.; STPS5L60U: Significantly lower Vf improves efficiency and reduces heat.; SS36 SMB: Nearly identical forward voltage characteristics.
Temperature	-65°C to 150°C	-50°C to 150°C	-	-55°C to 150°C	-50°C to 150°C / -55°C to 150°C — Reduced operating range at low temperatures.; SS36 SMB: Reduced operating range at low temperatures.
Reverse Leakage	~0.5mA	-	~1.5mA	-	~1.5mA — Higher leakage current can affect low-power states.

Application & sourcing insights

Questions & answers

For a balanced upgrade, consider UMW SS510B, which offers higher 100V/5A ratings. For applications needing higher efficiency, STPS5L60U provides a much lower forward voltage but requires checking reverse leakage.