MDA1050-4R7M
KOHERELEC
Needs validationlow risk
An upgrade with higher current, lower DCR, and wider temperature range in a very similar package.
Best Alternatives to SMMS1050-4R7M
SMMS1050-4R7M is a 4.7µH shielded power inductor with a 14A saturation current. While no drop-in replacement is confirmed, several functional and form-fit alternatives exist, such as the MDA1050-4R7M upgrade candidate.
AI replacement insight
Package riskmedium
Candidates have similar but not identical packages. Footprint and height must be verified.
Electrical risklow
Several candidates offer matching or superior electrical specs, but some have higher DCR.
Can it be replaced directly?
Direct replacement for SMMS1050-4R7M should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The best replacement path is MDA1050-4R7M, which offers superior electrical performance in a nearly identical package. However, layout verification is essential.
Main risk
The main risk is physical incompatibility. Even for parts with similar dimensions, the exact land pattern and height must be verified to ensure proper fit and assembly.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | SMMS1050-4R7M | MDA1050-4R7M | SMMS1040-4R7M | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Inductance | 4.7µH | 4.7µH | 4.7µH | 4.7µH — Inductance value matches.; SMMS1040-4R7M: Inductance value matches. | |
| Saturation Current | 14.0A | 16.0A | 15.0A | 16.0A / 15.0A — Higher saturation current provides more margin.; SMMS1040-4R7M: Slightly higher saturation current. | |
| Dcr | 12.4mΩ | 9.3mΩ | 17.0mΩ | 9.3mΩ / 17.0mΩ — Lower DCR improves efficiency.; SMMS1040-4R7M: Higher DCR may increase power loss. | |
| Package | 11.5x10.0mm | 11.5x10.3mm | 11.5x10.0mm | 11.5x10.3mm / 11.5x10.0mm — Footprint is a near-match, verify layout.; SMMS1040-4R7M: Footprint matches the target. | |
| Temperature | -40°C to +125°C | -55°C to +155°C | - | -55°C to +155°C — Wider operating temperature range. | |
| Height | 5.0mm | - | 4.0mm | 4.0mm — Lower profile than target (5.0mm). |
Application & sourcing insights
Questions & answers
Verified drop-in options for SMMS1050-4R7M 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.