Is there a pin-compatible replacement for STPS3L60U?

Yes, diodes in the SMB (DO-214AA) package are pin-compatible. Candidates like SK56, SS56B, and SS1060B share this package, making them potential physical drop-in replacements, but electrical parameters like forward voltage must be verified.

What risks should I check before replacing STPS3L60U?

First, check the forward voltage (Vf); a higher Vf increases power loss. Second, confirm the reverse voltage (Vr) and forward current (If) ratings meet or exceed your application's needs. Finally, ensure the substitute is also a Schottky diode to maintain similar switching performance.

STPS3L60U Alternatives, Datasheet & Cross Reference | STMicroelectronics

STPS3L60U is a 60V, 3A Power Schottky Rectifier in an SMB package. Key alternatives often match the package and voltage while offering higher current ratings, but may have slightly different forward voltage characteristics.

AI replacement insight

Package risklow

Candidates share the common SMB package.

Electrical riskmedium

Forward voltage is slightly higher in most alternatives, requiring thermal analysis.

Sourcing risklow

Multiple vendors produce suitable alternatives.

Can it be replaced directly?

Yes, several functional alternatives exist. SK56 is a strong candidate with similar parameters and higher current capability. Always verify the forward voltage impact on your design's efficiency.

Best replacement path

Consider Schottky diodes like SK56 or SS1060B in the same SMB package. They offer equal or better voltage and current ratings.

Main risk

The primary risk is a higher forward voltage (Vf) in substitutes, which can increase power dissipation. Also, some alternatives may not offer a higher voltage safety margin.

Recommended alternatives

An upgrade path with a significantly higher current rating (10A) in the same package.

View details

Alternative comparison matrix

Feature / factor	STPS3L60U	SS1060B	SK56	SS56B	Compatibility / risk
Package	SMB	SMB	DO-214AA (SMB)	DO-214AA (SMB)	SMB / DO-214AA (SMB) — Physically compatible package.; SK56: Physically compatible package.; SS56B: Physically compatible package.
Diode Type	Schottky	Schottky	Schottky	Schottky	Schottky — Matches target's diode technology.; SK56: Matches target's diode technology.; SS56B: Matches target's diode technology.
Voltage	60V	60V	60V	60V	60V — Matches target, but no additional safety margin.; SK56: Matches target, but no additional safety margin.; SS56B: Matches target, but no additional safety margin.
Current	3A	10A	5A	5A	10A / 5A — Significant current upgrade provides substantial margin.; SK56: Higher current rating provides more design margin.; SS56B: Higher current rating provides more design margin.
Forward Voltage	0.61V @ 3A	~0.7V @ 10A	~0.68V @ 5A	~0.7V @ 5A	~0.7V @ 10A / ~0.68V @ 5A / ~0.7V @ 5A — Vf is higher and specified at a different current.; SK56: Slightly higher Vf may increase power loss.; SS56B: Slightly higher Vf may increase power loss.

Application & sourcing insights

Questions & answers

SK56 and SS1060B are excellent alternatives. Both are Schottky diodes in the same SMB package, offering higher current ratings. SK56 is very close parametrically, while SS1060B provides a significant current upgrade to 10A.