MWSA1004S-3R3MT
Sunlord
Needs validationmedium risk
A 3.3µH inductor from the same series with higher current ratings in a larger package.
Best Alternatives to MWSA0518S-3R3MT
MWSA0518S-3R3MT is a 3.3µH power inductor in a compact 0518 package. While direct replacements are unavailable, several upgrades with superior current ratings exist in different packages, requiring a board redesign.
AI replacement insight
Package riskhigh
No candidates match the target's 0518 package. Board redesign is mandatory.
Electrical risklow
All candidates are electrical upgrades with better current and DCR ratings.
Can it be replaced directly?
Direct replacement for MWSA0518S-3R3MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Upgrading to a larger package like the Sunlord MWSA1004S-3R3MT offers significantly better current handling and lower DCR, but requires a PCB redesign.
Main risk
The primary risk is mechanical incompatibility. All reviewed alternatives are in different packages and are not drop-in replacements.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | MWSA0518S-3R3MT | MWSA1004S-3R3MT | SMMS0650-3R3M | SMMS1040-3R3M | Compatibility / risk |
|---|---|---|---|---|---|
| Inductance | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH — Inductance matches target value.; SMMS0650-3R3M: Inductance matches target value.; SMMS1040-3R3M: Inductance matches target value.; SMMS1770-3R3M: Inductance matches target value. |
| Dcr Ohm | 58 mΩ | 16 mΩ | 20 mΩ | 10.8 mΩ | 16 mΩ / 20 mΩ / 10.8 mΩ / 3.68 mΩ — Significantly lower DCR improves efficiency.; SMMS0650-3R3M: Lower DCR improves efficiency.; SMMS1040-3R3M: Significantly lower DCR improves efficiency.; SMMS1770-3R3M: Significantly lower DCR improves efficiency. |
| Saturation Current A | 4.8 A | 16.0 A | 9.0 A | 16.0 A | 16.0 A / 9.0 A / 54.0 A — Higher saturation current provides more margin.; SMMS0650-3R3M: Higher saturation current provides more margin.; SMMS1040-3R3M: Higher saturation current provides more margin.; SMMS1770-3R3M: Vastly superior saturation current provides huge design margin. |
| Package | 0518 | 1004 | 0650 (7.1mm x 6.6mm) | 1040 | 1004 / 0650 (7.1mm x 6.6mm) / 1040 / 1770 — From same mfr/series but larger package. Requires board redesign.; SMMS0650-3R3M: Package is not compatible, requires board redesign.; SMMS1040-3R3M: Package is not compatible, requires board redesign.; SMMS1770-3R3M: Package is not compatible, requires board redesign. |
Application & sourcing insights
Questions & answers
Verified drop-in options for MWSA0518S-3R3MT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.