MWSA1004S-220MT
Sunlord
Needs validationhigh risk
High-performance electrical alternative with much higher current, but in a very large package.
Best Alternatives to SMMS0420-220M
SMMS0420-220M is a 22µH molded power inductor in a compact 4.6x4.2mm package. While no direct pin-compatible replacements are identified, several functional alternatives with superior electrical performance are available but require board redesign.
AI replacement insight
Electrical risklow
Alternatives offer superior current and DCR ratings.
Package riskhigh
No drop-in found. All alternatives are larger and require PCB layout changes.
Can it be replaced directly?
No direct pin-for-pin replacement for SMMS0420-220M has been identified. All potential alternatives require a different PCB footprint.
Best replacement path
Use a functional alternative with higher current and lower DCR if PCB space allows for a larger package, such as the SMMS0650-220M.
Main risk
The primary risk is mechanical incompatibility; all reviewed alternatives are in larger packages and require a board redesign.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SMMS0420-220M | MWSA1004S-220MT | SLO0630H220MTT | SMMS0630-220M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4.6x4.2x2.0mm | 10.0x11.5x4.0mm | 7.3x6.6x3.0mm | 7.4x6.8x3.0mm | 10.0x11.5x4.0mm / 7.3x6.6x3.0mm / 7.4x6.8x3.0mm / 7.4x6.8x5.0mm — Candidate is substantially larger.; SLO0630H220MTT: Candidate is significantly larger.; SMMS0630-220M: Candidate is significantly larger.; SMMS0650-220M: Candidate is significantly larger. |
| Inductance | 22µH | 22µH | 22µH | 22µH | 22µH — matched; SLO0630H220MTT: matched; SMMS0630-220M: matched; SMMS0650-220M: matched |
| Saturation Current A | 1.5A | 5.5A | 3.2A | 3.5A | 5.5A / 3.2A / 3.5A / 4.0A — Much higher current handling is a major upgrade.; SLO0630H220MTT: Higher current handling is a performance upgrade.; SMMS0630-220M: Higher current handling is a performance upgrade.; SMMS0650-220M: Higher current handling is a performance upgrade. |
| Dcr Ohm | 450mΩ | 66mΩ | 139mΩ | 126mΩ | 66mΩ / 139mΩ / 126mΩ / 125mΩ — Significantly lower DCR improves efficiency.; SLO0630H220MTT: Lower DCR improves efficiency.; SMMS0630-220M: Lower DCR improves efficiency.; SMMS0650-220M: Lower DCR improves efficiency. |
Application & sourcing insights
Questions & answers
Electrically, parts like SMMS0650-220M or MWSA1004S-220MT are superior with higher current ratings and lower resistance. However, they are physically larger and require a new PCB layout.