Is there a pin-compatible replacement for SS510 SMA?

The SS520 is a likely pin-compatible replacement as it uses the same DO-214AC (SMA) package. However, it is not an exact electrical clone due to a higher forward voltage (Vf). No fully verified pin-to-pin, drop-in replacement has been confirmed.

What risks should I check before replacing SS510 SMA?

Before replacing the SS510 SMA, you must check two main risks: 1) Package Mismatch: Ensure the replacement is in a DO-214AC (SMA) package, not a larger SMB or SMC. 2) Electrical Differences: Verify the forward voltage (Vf) and reverse leakage current (Ir) are within your system's limits.

SS510 SMA Alternatives, Datasheet & Cross Reference | BORN

Finding a replacement for the BORN SS510 SMA, a 100V 5A Schottky diode, requires careful attention to the package. While many parts share similar electrical ratings, ensuring the replacement uses the same DO-214AC (SMA) footprint is critical to avoid a board redesign.

AI replacement insight

Package riskhigh

Many candidates have different footprints (SMB/SMC) requiring PCB changes.

Electrical riskmedium

Even form-fit candidates may have different forward voltage (Vf), impacting efficiency and thermals.

Can it be replaced directly?

No verified drop-in replacement exists. The SS520 is a strong form-fit candidate but has a higher forward voltage. Other parts like UMW SS510B and BORN SS510SMC are electrically similar but require a different PCB footprint (SMB/SMC).

Best replacement path

The SS520 from Yangjie Technology is the most promising path. It offers a compatible SMA package and a higher 200V rating, but requires review of its slightly higher forward voltage (Vf) for thermal considerations.

Main risk

The main risk is package incompatibility. Many diodes with 'SS510' in their name use larger SMB or SMC packages, which are not drop-in replacements for the SMA package and require a PCB redesign.

Recommended alternatives

A form-fit upgrade with double the voltage rating, but has a higher forward voltage.

View details

Alternative comparison matrix

Feature / factor	SS510 SMA	SS520	SS510SMC	UMW SS510B	Compatibility / risk
Package	DO-214AC (SMA)	DO-214AC (SMA)	DO-214AB (SMC)	SMB	DO-214AC (SMA) / DO-214AB (SMC) / SMB — Package matches target, enabling form-fit replacement.; SS510SMC: Candidate is in a larger SMC (DO-214AB) package, requires PCB redesign.; UMW SS510B: Candidate is in a larger SMB (DO-214AA) package, requires PCB redesign.
Voltage	100V	200V	100V	100V	200V / 100V — Higher voltage rating provides increased design margin.; SS510SMC: Reverse voltage rating matches.; UMW SS510B: Reverse voltage rating matches.
Current	5A	5A	5A	5A	5A — Average rectified current matches.; SS510SMC: Average rectified current matches.; UMW SS510B: Average rectified current matches.
Forward Voltage	0.85V @ 5A	0.95V	0.85V @ 5A	0.85V @ 3A	0.95V / 0.85V @ 5A / 0.85V @ 3A — Higher forward voltage will result in slightly more power loss.; SS510SMC: Forward voltage matches the target specification.; UMW SS510B: Vf specified at a lower current. Vf at 5A may be higher than target.

Application & sourcing insights

Questions & answers

The best alternative identified is the SS520 from Yangjie Technology. It comes in the same SMA package with a higher voltage rating (200V vs 100V), but you must verify its slightly higher forward voltage is acceptable for your design's efficiency and thermal budget.