MWSA0503S-1R0MT
Sunlord
Needs validationmedium risk
Near form-fit alternate with lower DCR, but has a slightly lower current rating and is taller.
Best Alternatives to MWSA0518S-1R0MT
Finding a substitute for the Sunlord MWSA0518S-1R0MT 1.0µH power inductor requires careful consideration of package size and electrical ratings. While several parts offer superior electrical performance, they come in larger packages, and the closest form-fit candidate has a minor parametric tradeoff.
AI replacement insight
Package riskhigh
Most alternatives are larger. One near-fit is taller, risking mechanical interference.
Electrical riskmedium
One candidate has a slightly lower current rating. All others are upgrades.
Can it be replaced directly?
No direct, drop-in replacement was found. The closest candidate, MWSA0503S-1R0MT, has the same footprint but is taller and has a slightly lower heat current rating, requiring engineering review.
Best replacement path
Review MWSA0503S-1R0MT for applications where the layout is fixed and a 2.5% lower current rating is acceptable. For higher performance, MWSA0603S-1R0MT is a strong option if the PCB can be modified for a larger part.
Main risk
Package mismatch is the primary risk. Most alternatives are physically larger, requiring a PCB redesign. The one near-fit option has a lower current rating and is taller.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | MWSA0518S-1R0MT | MWSA0503S-1R0MT | MWSA0603S-1R0MT | CYA0630-1.0UH | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 5.2x5.4x1.8mm | 5.2x5.4x2.8mm | 6.6mm x 7.0mm | SMD (6.6x7.0mm) | 5.2x5.4x2.8mm / 6.6mm x 7.0mm / SMD (6.6x7.0mm) — Footprint matches, but 1mm taller; MWSA0603S-1R0MT: Larger footprint; CYA0630-1.0UH: Larger footprint, verify datasheet; SLO0630H1R0MTT: Larger footprint, verify datasheet |
| Current | 9.0A | 10.0A | 15.0A | 15.0A | 10.0A / 15.0A / 22.0A — Isat (Saturation); MWSA0603S-1R0MT: Isat (Saturation); CYA0630-1.0UH: Isat (Saturation); SLO0630H1R0MTT: Isat (Saturation) |
| Resistance | 17mΩ | 14mΩ | 7.4mΩ | 7.0mΩ | 14mΩ / 7.4mΩ / 7.0mΩ / 6.8mΩ — DCR (lower is better); MWSA0603S-1R0MT: DCR (lower is better); CYA0630-1.0UH: DCR (lower is better); SLO0630H1R0MTT: DCR (lower is better) |
| Inductance | 1.0µH | - | 1.0µH | - | 1.0µH — matched |
Application & sourcing insights
Questions & answers
The best alternative depends on your design constraints. If your PCB layout cannot change, review Sunlord's MWSA0503S-1R0MT, but be aware it has a slightly lower current rating (7.8A vs 8.0A) and is taller. If you can change the layout, Sunlord's MWSA0603S-1R0MT offers higher performance in a larger package.