SM7850-470MT
SXN
Needs validationmedium risk
A functional alternative with matched inductance but a larger package and superior current handling.
Best Alternatives to SWPA4020S470MT
Explore functional alternatives for the Sunlord SWPA4020S470MT 47µH inductor. While no direct drop-in replacements are available, several options offer superior electrical performance if a different package size is acceptable for your design.
AI replacement insight
Package riskhigh
All candidates are much larger than the 4x4mm target, requiring a board redesign.
Electrical risklow
Candidates offer higher current and lower DCR, which is generally a safe upgrade, but circuit stability should be verified.
Can it be replaced directly?
No direct, drop-in replacement for the SWPA4020S470MT is available among the reviewed candidates due to significant package size differences.
Best replacement path
Select a functional alternative with a higher current rating and redesign the PCB layout to accommodate the larger package.
Main risk
The main risk is the physical incompatibility, as all alternatives require a larger PCB footprint and will not fit on the existing layout.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | SWPA4020S470MT | SM7850-470MT | SMDRH104R-470MT | SMMS0850-470M | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4020 (4x4mm) | SM7850 (7.8x7.8mm) | 10.3x10.3mm | 0850 (8.3x8.3mm) | SM7850 (7.8x7.8mm) / 10.3x10.3mm / 0850 (8.3x8.3mm) / 1050 (11.5x10.2mm) — Not a drop-in replacement. Requires PCB redesign.; SMDRH104R-470MT: Not a drop-in replacement. Requires PCB redesign.; SMMS0850-470M: Not a drop-in replacement. Requires PCB redesign.; SMMS1050-470M: Not a drop-in replacement. Requires PCB redesign. |
| Inductance | 47 µH | 47 µH | 47 µH | 47 µH | 47 µH — matched; SMDRH104R-470MT: matched; SMMS0850-470M: matched; SMMS1050-470M: matched |
| Saturation Current A | 0.74 A | 1.28 A | 2.44 A | 4.0 A | 1.28 A / 2.44 A / 4.0 A / 4.5 A — Higher current handling.; SMDRH104R-470MT: Significantly higher current handling.; SMMS0850-470M: Significantly higher current handling.; SMMS1050-470M: Significantly higher current handling. |
| Dcr Ohm | 810 mΩ | 150 mΩ | 128 mΩ | 190 mΩ | 150 mΩ / 128 mΩ / 190 mΩ / 110 mΩ — Significantly lower resistance, higher efficiency.; SMDRH104R-470MT: Significantly lower resistance, higher efficiency.; SMMS0850-470M: Significantly lower resistance, higher efficiency.; SMMS1050-470M: Significantly lower resistance, higher efficiency. |
Application & sourcing insights
Questions & answers
The best alternative depends on your board space and current needs. SM7850-470MT offers a good performance upgrade in a moderately larger package, while parts like SMMS1770-470M provide much higher current handling in a very large footprint.