Needs validationhigh risk
Functional alternative with significantly higher current and lower DCR, but in a much larger package.
Best Alternatives to SMNR4030-101MT
Finding a replacement for the SXN SMNR4030-101MT 100µH inductor requires careful review of package size and current ratings. While several parts offer better electrical performance, they are often in larger packages.
AI replacement insight
Package riskhigh
All electrically suitable alternatives are in larger packages and require PCB redesign.
Electrical risklow
Alternatives offer improved current handling and lower DCR, which is generally beneficial but should be verified.
Can it be replaced directly?
No direct, drop-in replacement for SMNR4030-101MT is available among the candidates reviewed due to package size mismatches.
Best replacement path
Redesign PCB for a larger, higher-current inductor like the SMNR series (e.g., SMNR6045-101MT) for improved performance.
Main risk
Package Mismatch
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | SMNR4030-101MT | SMDRH104R-101MT | SMDRH105R-101MT | SMNR6045-101MT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 4030 (4x4mm) | 10.3x10.3mm | 10.3x10.4mm | 6045 (6x6mm) | 10.3x10.3mm / 10.3x10.4mm / 6045 (6x6mm) / 8040 (8x8mm) — Not a physical fit for the target's footprint.; SMDRH105R-101MT: Not a physical fit for the target's footprint.; SMNR6045-101MT: Not a physical fit for the target's footprint.; SMNR8040-101MT: Not a physical fit for the target's footprint. |
| Inductance | 100 µH | 100 µH | 100 µH | 100 µH | 100 µH — matched; SMDRH105R-101MT: matched; SMNR6045-101MT: matched; SMNR8040-101MT: matched |
| Saturation Current A | 0.6 A | 1.66 A | 1.5 A | 0.95 A | 1.66 A / 1.5 A / 0.95 A / 1.15 A — Higher current handling is an upgrade.; SMDRH105R-101MT: Higher current handling is an upgrade.; SMNR6045-101MT: Higher current handling is an upgrade.; SMNR8040-101MT: Higher current handling is an upgrade. |
| Dcr Ohm | 1.15 Ω | 0.304 Ω | 0.247 Ω | 0.433 Ω | 0.304 Ω / 0.247 Ω / 0.433 Ω / 0.29 Ω — Lower DCR improves efficiency.; SMDRH105R-101MT: Lower DCR improves efficiency.; SMNR6045-101MT: Lower DCR improves efficiency.; SMNR8040-101MT: Lower DCR improves efficiency. |
Application & sourcing insights
Questions & answers
There is no direct drop-in replacement found. Alternatives like the SMNR8040-101MT offer superior current ratings and lower DCR but are in a much larger package, requiring a PCB redesign.