SWPA5040S4R7MT
Sunlord
Needs validationhigh risk
Electrically superior alternative with matching inductance but requires more board space due to its larger 5040 package.
Best Alternatives to SMNR4020-4R7MT
Finding a replacement for the SMNR4020-4R7MT 4.7µH inductor involves balancing electrical parameters with physical package size. While no direct pin-compatible replacements were found, several functional alternatives exist that may require a PCB layout change.
AI replacement insight
Package riskhigh
No drop-in replacement found; all alternatives require a PCB redesign.
Electrical risklow
Multiple candidates meet or exceed key electrical specs like current and DCR.
Can it be replaced directly?
No direct drop-in replacement for SMNR4020-4R7MT has been identified. All candidates require a PCB layout modification due to different package sizes.
Best replacement path
If board space allows, use an electrically superior part in a larger package like SWPA5040S4R7MT (5040) for better performance. Otherwise, a board redesign is unavoidable.
Main risk
The main risk is the physical package mismatch, which necessitates a PCB redesign for any of the functional alternatives.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SMNR4020-4R7MT | SWPA5040S4R7MT | VLS6045EX-4R7M-H | XRIM252012S4R7MBCA | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4020 | 5040 | 6045 | 2520 | 5040 / 6045 / 2520 / 3030 Metric (1212 Imperial) — Larger footprint, requires PCB redesign.; VLS6045EX-4R7M-H: Larger footprint, requires PCB redesign.; XRIM252012S4R7MBCA: Smaller footprint, requires PCB redesign.; VLS3012HBX-4R7M: Smaller footprint, requires PCB redesign. |
| Inductance | 4.7µH | 4.7µH | 4.7µH | 4.7µH | 4.7µH — matched; VLS6045EX-4R7M-H: matched; XRIM252012S4R7MBCA: matched; VLS3012HBX-4R7M: matched |
| Saturation Current A | 2.35A | 3.5A | 5.8A | 2.4A | 3.5A / 5.8A / 2.4A / 2.51A — Higher saturation current.; VLS6045EX-4R7M-H: Significantly higher saturation current.; XRIM252012S4R7MBCA: Slightly higher saturation current.; VLS3012HBX-4R7M: Slightly higher saturation current. |
| Current A | 1.34A | 3.3A | 4.2A | 1.8A | 3.3A / 4.2A / 1.8A — Higher thermal current rating.; VLS6045EX-4R7M-H: Significantly higher thermal current.; XRIM252012S4R7MBCA: Higher thermal current rating. |
| Dcr Ohm | 0.075Ω | 0.03Ω | 0.027Ω | 0.15Ω | 0.03Ω / 0.027Ω / 0.15Ω / 0.201Ω — Lower DCR improves efficiency.; VLS6045EX-4R7M-H: Lower DCR improves efficiency.; XRIM252012S4R7MBCA: Higher DCR increases power loss.; VLS3012HBX-4R7M: Significantly higher DCR increases power loss. |
Application & sourcing insights
Questions & answers
The best alternative depends on board space. If a larger 5040 package fits, SWPA5040S4R7MT offers better current ratings and lower DCR. If space is tight, XRIM252012S4R7MBCA is smaller but has higher DCR.