
MDD(Microdiode Semiconductor)
A very strong alternative, likely a variant of SS520C, with a higher 200V rating and matching key parameters.
SS510SMC is a 100V, 5A Schottky diode in a standard SMC package. Several alternatives with matching packages and equal or better electrical ratings are available, offering upgrades in voltage or current handling.
Candidates have equal or better primary ratings. Check Vf/Ir for thermal impact.
All candidates use the same standard DO-214AB (SMC) package.
Multiple manufacturers produce suitable alternatives.
Yes, parts like SS520C and SK1010C are strong candidates for replacing SS510SMC, offering the same package and improved electrical ratings.
Upgrade to a higher voltage part like SS520C/SS5200C or a higher current part like SK1010C for increased design margin.
The primary risk is a mismatch in secondary electrical parameters like forward voltage (Vf) or reverse leakage (Ir), which can impact circuit efficiency and thermals.

MDD(Microdiode Semiconductor)
A very strong alternative, likely a variant of SS520C, with a higher 200V rating and matching key parameters.
| Feature / factor | SS510SMC | SS5200C | SK1010C | SS520C | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DO-214AB (SMC) | DO-214AB (SMC) | SMC (DO-214AB) | DO-214AB (SMC) | DO-214AB (SMC) / SMC (DO-214AB) — Package is a form-fit match.; SK1010C: Package is a form-fit match.; SS520C: Package is a form-fit match. |
| Voltage | 100V | 200V | 100V | 200V | 200V / 100V — Higher voltage rating provides more design margin.; SK1010C: Voltage rating is identical.; SS520C: Higher voltage rating provides more design margin. |
| Current | 5A | 5A | 10A | 5A | 5A / 10A — Current rating is identical.; SK1010C: Higher current rating provides more thermal margin.; SS520C: Current rating is identical. |
| Diode Type | Schottky | Schottky | Schottky | Schottky | Schottky — Functionally matches target (verified from summary).; SK1010C: Functionally matches target (verified from summary).; SS520C: Functionally matches target (verified from summary). |
| Forward Voltage | 0.85V @ 5A | 0.85V @ 5A | - | - | 0.85V @ 5A — Vf matches target, ensuring similar efficiency. |
SS520C and SS5200C are strong alternatives, offering a higher 200V rating in the same package with the same 5A current. SK1010C is also a good option with a higher 10A current rating if more current handling is needed.