MWSA0503S-4R7MT
Sunlord
Needs validationhigh risk
A functional alternative with higher current ratings but in a larger, non-compatible package.
Best Alternatives to SWPA3015S4R7MT
Finding a substitute for the Sunlord SWPA3015S4R7MT, a 4.7µH power inductor in a compact 3015 package, requires careful attention to both electrical specs and physical size. While functional alternatives exist, drop-in replacements are challenging to find.
AI replacement insight
Package riskhigh
All candidates have different, larger packages than the target's 3015 footprint.
Electrical risklow
Most candidates offer superior electrical performance (higher current, lower DCR).
Sourcing risklow
Alternatives are available from the same and different manufacturers.
Can it be replaced directly?
No, a direct, pin-compatible replacement for SWPA3015S4R7MT was not found in this review. All candidates are in larger packages requiring a PCB layout change.
Best replacement path
Search for 4.7µH inductors in a 3015 (3.0x3.0mm) package with Irms ≥ 1.2A and Isat ≥ 1.4A.
Main risk
The primary risk is mechanical incompatibility. All functional alternatives identified are in larger physical packages (4020, 6045, etc.) and cannot be used as drop-in replacements for the 3015 package.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | SWPA3015S4R7MT | MWSA0503S-4R7MT | SWPA4030S4R7MT | SWPA6045S4R7MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 3.0x3.0mm | 5.2x5.4mm | 4030 (4.0x4.0mm) | 6045 (6.0x6.0mm) | 5.2x5.4mm / 4030 (4.0x4.0mm) / 6045 (6.0x6.0mm) / SMD (7.1x6.6mm) — Candidate is larger and not a drop-in replacement.; SWPA4030S4R7MT: Candidate is larger and not a drop-in replacement.; SWPA6045S4R7MT: Candidate is significantly larger and not a drop-in replacement.; SLO0630H4R7MTT: Candidate is significantly larger and not a drop-in replacement. |
| Current | 1.2 A | 3.0 A | 2.1 A | 3.5 A | 3.0 A / 2.1 A / 3.5 A / 5.5 A — Candidate has a higher heat rating current (Irms).; SWPA4030S4R7MT: Higher Irms (from ES data), but was missing from primary spec.; SWPA6045S4R7MT: Candidate has a much higher heat rating current (Irms).; SLO0630H4R7MTT: Much higher Irms (from ES data), but was missing from primary spec. |
| Saturation Current A | 1.4 A | 4.6 A | - | 5.5 A | 4.6 A / 5.5 A / 9.0 A — Candidate has a higher saturation current (Isat).; SWPA6045S4R7MT: Candidate has a much higher saturation current (Isat).; SLO0630H4R7MTT: Much higher Isat. |
| Dcr Ohm | 0.125 Ω | 0.085 Ω | 0.072 Ω | 0.03 Ω | 0.085 Ω / 0.072 Ω / 0.03 Ω — Candidate has lower DCR.; SWPA4030S4R7MT: Candidate has lower DCR.; SWPA6045S4R7MT: Candidate has lower DCR, improving efficiency. |
| Manufacturer | Sunlord | - | - | - | Sunltech — Different manufacturer. |
Application & sourcing insights
Questions & answers
Based on this review, there is no single best alternative. While several parts like SWPA6045S4R7MT are electrically superior, they are all in larger packages and require a board redesign. The best path is to search for another 4.7µH inductor in a 3015 package.