Needs validationhigh risk
Strong electrical upgrade with higher current and lower DCR, but requires board redesign for its larger package.
Best Alternatives to SWPA8040S150MT
Finding a replacement for the Sunlord SWPA8040S150MT, a 15µH power inductor in an 8x8mm package, requires careful consideration. While no direct pin-compatible options were found, several functional alternatives offer superior electrical performance but necessitate a board redesign.
AI replacement insight
Package riskhigh
All candidates have different footprints (larger or smaller) and are not mechanically compatible.
Electrical risklow
Most candidates are electrical upgrades. Two have higher DCR, which requires an efficiency review.
Sourcing risklow
Candidates are from various manufacturers, offering supply chain diversity for a new design.
Can it be replaced directly?
No direct, pin-compatible replacement for SWPA8040S150MT was identified. All functional alternatives require a PCB layout change due to different package sizes.
Best replacement path
For new designs or board revisions, parts like SMDRI127-150MT offer superior current handling and lower DCR in a larger package. For existing boards, no direct replacement was found.
Main risk
The primary risk is the package mismatch. None of the candidates are drop-in replacements, necessitating a board redesign and validation.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | SWPA8040S150MT | FCH1365-150M | SLO1040H150MTT | SMDRI127-150MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 8040 (8.0x8.0mm) | 13.7x12.8mm | 10.8x10.0mm | 12.3x12.3mm | 13.7x12.8mm / 10.8x10.0mm / 12.3x12.3mm / 1770 (~17x17mm) — Larger footprint, not a drop-in replacement.; SLO1040H150MTT: Larger, rectangular footprint, not a drop-in replacement.; SMDRI127-150MT: Larger footprint, not a drop-in replacement.; SMMS1770-150M: Much larger footprint, not a drop-in replacement. |
| Saturation Current A | 3.4A | 12.0A | 7.0A | 8.0A | 12.0A / 7.0A / 8.0A / 25.0A — Significantly higher saturation current.; SLO1040H150MTT: Higher saturation current.; SMDRI127-150MT: Significantly higher saturation current.; SMMS1770-150M: Significantly higher saturation current. |
| Current A | 2.6A | 10.0A | 4.5A | 4.5A | 10.0A / 4.5A / Missing — Significantly higher RMS current rating.; SLO1040H150MTT: Higher RMS current rating (from ES data).; SMDRI127-150MT: Higher RMS current rating (from ES data).; SMMS1770-150M: RMS current not in structured data, but low DCR implies high rating. |
| Dcr Ohm | 47mΩ | 30mΩ | 32mΩ | 27mΩ | 30mΩ / 32mΩ / 27mΩ / 18.8mΩ — Lower DCR improves efficiency.; SLO1040H150MTT: Lower DCR improves efficiency.; SMDRI127-150MT: Lower DCR improves efficiency.; SMMS1770-150M: Significantly lower DCR improves efficiency. |
Application & sourcing insights
Questions & answers
The best functional alternative is SMDRI127-150MT, which offers higher current ratings and lower DCR. However, it is not a drop-in replacement and requires a PCB redesign for its larger 12.3x12.3mm package.