MWSA1004S-3R3MT
Sunlord
Needs validationhigh risk
A functional alternative with higher current ratings and lower DCR, but in a larger physical package.
Best Alternatives to SMNR4030-3R3MT
Finding a replacement for the SMNR4030-3R3MT, a 3.3µH power inductor in a 4x4mm package, involves balancing electrical upgrades with physical constraints. While no drop-in alternatives were found, several functional alternatives offer superior performance if a PCB redesign is feasible.
AI replacement insight
Package riskhigh
All candidates are in larger packages and will not fit the existing PCB footprint.
Electrical risklow
All candidates offer superior current handling and lower DCR, which is a safe upgrade.
Can it be replaced directly?
No direct drop-in replacement was found. All candidates have different package sizes and are not pin-compatible.
Best replacement path
Use an electrically superior but physically larger alternative, requiring a PCB layout change.
Main risk
Package mismatch requiring PCB redesign.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | SMNR4030-3R3MT | MWSA1004S-3R3MT | PSPMAA1040H-3R3M-ANP | SMMS0630-3R3M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4030 (4x4mm) | 1004 (~10x11.5mm) | 1040H (~10x11mm) | 0630 (~7x7mm) | 1004 (~10x11.5mm) / 1040H (~10x11mm) / 0630 (~7x7mm) / 0650 (~7x7mm) — Candidate is significantly larger and not a drop-in replacement.; PSPMAA1040H-3R3M-ANP: Candidate is significantly larger and not a drop-in replacement.; SMMS0630-3R3M: Candidate is larger and not a drop-in replacement.; SMMS0650-3R3M: Candidate is larger and not a drop-in replacement. |
| Inductance | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH — Inductance value matches.; PSPMAA1040H-3R3M-ANP: Inductance value matches.; SMMS0630-3R3M: Inductance value matches.; SMMS0650-3R3M: Inductance value matches. |
| Saturation Current | 3.3 A | 16.0 A | 16.0 A | 9.5 A | 16.0 A / 9.5 A / 9.0 A — Significantly higher saturation current.; PSPMAA1040H-3R3M-ANP: Significantly higher saturation current.; SMMS0630-3R3M: Higher saturation current.; SMMS0650-3R3M: Higher saturation current. |
| Current | 2.4 A | 7.96 A | 10.0 A | 7.0 A | 7.96 A / 10.0 A / 7.0 A / 8.5 A — Significantly higher RMS current rating.; PSPMAA1040H-3R3M-ANP: Significantly higher RMS current rating.; SMMS0630-3R3M: Higher RMS current rating.; SMMS0650-3R3M: Higher RMS current rating. |
| Dcr | 40 mΩ | 16 mΩ | 12.0 mΩ | 24.5 mΩ | 16 mΩ / 12.0 mΩ / 24.5 mΩ / 20 mΩ — Lower DCR improves efficiency.; PSPMAA1040H-3R3M-ANP: Lower DCR improves efficiency.; SMMS0630-3R3M: Lower DCR improves efficiency.; SMMS0650-3R3M: Lower DCR improves efficiency. |
Application & sourcing insights
Questions & answers
While no direct drop-in replacement was found, parts like SMMS1040-3R3M and PSPMAA1040H-3R3M-ANP offer superior electrical performance (higher current, lower DCR). However, they are in larger packages and require a PCB redesign.