
MDD
A form-fit alternate with a higher voltage rating but also a higher forward voltage drop, requiring thermal review.
SS1045CG is a 45V, 10A Schottky rectifier in an SMC package. Finding a replacement requires matching the package and current, while carefully checking the forward voltage (Vf) to manage power dissipation.
Higher Vf increases power loss. Requires thermal validation.
Candidates share the same SMC package footprint.
No direct drop-in replacement is confirmed. All suitable candidates have a higher forward voltage (Vf), which impacts efficiency and thermal performance.
Upgrade to a 60V rated part like SS1060 or SK106C. This provides a voltage margin, but you must validate the higher forward voltage in your design.
Increased power dissipation and heat due to higher forward voltage (Vf) in all available alternatives.

MDD
A form-fit alternate with a higher voltage rating but also a higher forward voltage drop, requiring thermal review.
| Feature / factor | SS1045CG | SK106C | SS1060 | SK1010C | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SMC | DO-214AB (SMC) | SMC (DO-214AB) | SMC (DO-214AB) | DO-214AB (SMC) / SMC (DO-214AB) — Package is form-fit compatible.; SS1060: Package is form-fit compatible.; SK1010C: Package is form-fit compatible.; SS10100: Package is form-fit compatible. |
| Voltage | 45V | 60V | 60V | 100V | 60V / 100V — Higher reverse voltage rating provides increased design margin.; SS1060: Higher reverse voltage rating provides increased design margin.; SK1010C: Significantly higher reverse voltage rating provides robust margin.; SS10100: Significantly higher reverse voltage rating provides robust margin. |
| Current | 10A | 10A | 10A | 10A | 10A — matched; SS1060: matched; SK1010C: matched; SS10100: matched |
| Power | Vf=0.55V@10A | Vf=0.75V@10A | Vf=0.7V@10A | Vf=0.95V@10A | Vf=0.75V@10A / Vf=0.7V@10A / Vf=0.95V@10A / Vf=0.85V@10A — Higher forward voltage increases conduction losses and heat.; SS1060: Higher forward voltage increases conduction losses and heat.; SK1010C: Significantly higher forward voltage greatly increases power loss.; SS10100: Significantly higher forward voltage greatly increases power loss. |
The best alternatives are SS1060 or SK106C. They offer a higher voltage rating (60V) for better margin while matching the package and current rating, but require checking the impact of a slightly higher forward voltage.