NRS4018T4R7MDGJ
TAIYO YUDEN
Needs validationlow risk
A strong pin-compatible alternative with identical ratings and lower DCR for better efficiency.
Best Alternatives to SPH4018H4R7MT
Finding a substitute for the Sunlord SPH4018H4R7MT 4.7µH power inductor involves balancing current ratings and efficiency. Several pin-compatible options in the 4018 package are available, with trade-offs in DC resistance and current handling.
AI replacement insight
Electrical riskmedium
Candidates may have higher DCR, impacting efficiency. Current ratings (Irms, Isat) must be equal or greater.
Package risklow
The 4018 (4x4mm) package is standard, but always verify the land pattern in the datasheet before layout.
Can it be replaced directly?
Direct replacement for SPH4018H4R7MT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
NRS4018T4R7MDGJ from Taiyo Yuden is the best alternative, offering a lower DCR with matching current ratings.
Main risk
The main risk when substituting is accepting a part with higher DC Resistance (DCR), which will lower power efficiency.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | SPH4018H4R7MT | NRS4018T4R7MDGJ | NR4018S4R7MT | SWPA4018S4R7MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4018 (4.0x4.0mm) | 4018 (4.0x4.0mm) | 4018 | 4018 | 4018 (4.0x4.0mm) — Package dimensions match.; NR4018S4R7MT: Package dimensions match.; SWPA4018S4R7MT: Package dimensions match. |
| Inductance | 4.7 µH | 4.7 µH | - | - | 4.7 µH — Inductance value is identical. |
| Dcr Ohm | 0.084 Ω | 0.070 Ω | 0.117 Ω | 0.117 Ω | 0.070 Ω / 0.117 Ω — Lower DCR improves efficiency.; NR4018S4R7MT: Higher DCR will increase power loss.; SWPA4018S4R7MT: Higher DCR will increase power loss. |
| Current A | 1.7 A | 1.7 A | 2.3 A | 1.8 A | 1.7 A / 2.3 A / 1.8 A — Heat rating current (Irms) matches.; NR4018S4R7MT: Significantly higher Irms provides more thermal margin.; SWPA4018S4R7MT: Higher Irms provides more thermal margin. |
| Saturation Current A | 2.0 A | 2.0 A | 2.3 A | 2.2 A | 2.0 A / 2.3 A / 2.2 A — Saturation current (Isat) matches.; NR4018S4R7MT: Higher Isat prevents saturation at higher peak currents.; SWPA4018S4R7MT: Higher Isat prevents saturation at higher peak currents. |
Application & sourcing insights
Questions & answers
Verified drop-in options for SPH4018H4R7MT 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.