
FUXINSEMI
Offers a higher 3A current rating in the same SMA package with identical voltage and comparable forward voltage.
Finding a replacement for the SS210A 100V 2A Schottky diode is straightforward. This guide identifies several alternatives, including direct upgrades like the SS310A and SS510A, which offer higher current handling in the same SMA package.
All suggested alternatives use the same DO-214AC (SMA) package, ensuring physical compatibility.
While some parts are upgrades, others have higher forward voltage (Vf). This can increase power dissipation and must be checked against the application's thermal budget.
Yes, several alternatives exist for the SS210A. The SS310A is a strong candidate with a higher 3A current rating. The SS510A offers an even greater 5A rating. Both share the same 100V rating and SMA package.
SS310A and SS510A are strong upgrade candidates, offering higher current ratings (3A and 5A respectively) in the same package with comparable electrical characteristics.
The primary risk when substituting is a mismatch in forward voltage (Vf), which can affect power efficiency and thermal performance. Candidates with higher Vf should be carefully evaluated.

FUXINSEMI
Offers a higher 3A current rating in the same SMA package with identical voltage and comparable forward voltage.
| Feature / factor | SS210A | SS310A | SS510A | SS215 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AC (SMA) | SMA (DO-214AC) | DO-214AC (SMA) | DO-214AC (SMA) | SMA (DO-214AC) / DO-214AC (SMA) — Package is physically compatible.; SS510A: Package is physically compatible.; SS215: Package is physically compatible.; SS520: Package is physically compatible. |
| Voltage | 100V | 100V | 100V | 150V | 100V / 150V / 200V — Reverse voltage rating matches.; SS510A: Reverse voltage rating matches.; SS215: Higher voltage rating provides more margin.; SS520: Higher voltage rating provides more margin. |
| Current | 2.0A | 3.0A | 5.0A | 2.0A | 3.0A / 5.0A / 2.0A — Higher current rating provides more margin.; SS510A: Significantly higher current rating.; SS215: Current rating matches.; SS520: Higher current rating provides more margin. |
| Application | 0.85V @ 2A | 0.85V @ 3A | - | 0.95V | 0.85V @ 3A / 0.95V / 0.95V @ 5A — Forward voltage is comparable, check at operating point.; SS215: Potentially higher forward voltage may increase power loss.; SS520: Potentially higher forward voltage may increase power loss. |
The best alternatives for the SS210A are the SS310A and SS510A. Both offer higher current ratings (3A and 5A) in the same package and voltage, providing an easy upgrade path with low risk.