FEXL0430A-3R3M
cjiang (Changjiang Microelectronics Tech)
Needs validationhigh risk
Functional alternative with higher current ratings in a smaller physical footprint.
Best Alternatives to FXL0518-3R3-M
FXL0518-3R3-M is a 3.3µH power inductor. While no direct drop-in replacements have been identified, several functional alternatives offer superior electrical characteristics but require PCB layout changes due to different package sizes.
AI replacement insight
Package riskhigh
All candidates have different footprints, requiring a mandatory board respin.
Electrical risklow
Most alternatives are electrical upgrades (higher current, lower DCR), which is generally safe but should be verified in-circuit.
Can it be replaced directly?
No, there are no direct pin-compatible replacements for FXL0518-3R3-M. All functional alternatives have different physical packages and require a board redesign.
Best replacement path
For new designs, consider FEXL0430A-3R3M for a smaller, upgraded option or FXL0650-3R3-M for a larger, higher-current option. Both require a new PCB layout.
Main risk
The primary risk is mechanical incompatibility. All electrically suitable alternatives have different package footprints, requiring a PCB redesign.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | FXL0518-3R3-M | FEXL0430A-3R3M | FXL0650-3R3-M | FXL1040-3R3-M | Compatibility / risk |
|---|---|---|---|---|---|
| Inductance | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH | 3.3 µH — Inductance matches target.; FXL0650-3R3-M: Inductance matches target.; FXL1040-3R3-M: Inductance matches target.; APH0630T3R3M: Inductance matches target. |
| Package | 5.4mm x 5.2mm | 4.1mm x 4.1mm | 7.0mm x 6.6mm | 11.5mm x 10mm | 4.1mm x 4.1mm / 7.0mm x 6.6mm / 11.5mm x 10mm — Smaller footprint requires PCB redesign.; FXL0650-3R3-M: Larger footprint requires PCB redesign.; FXL1040-3R3-M: Much larger footprint requires PCB redesign.; APH0630T3R3M: Larger footprint requires PCB redesign. |
| Saturation Current A | 3.84 A | 6.2 A | 8.0 A | 16.0 A | 6.2 A / 8.0 A / 16.0 A / 7.89 A — Higher current handling.; FXL0650-3R3-M: Significantly higher current handling.; FXL1040-3R3-M: Vastly superior current handling.; APH0630T3R3M: Significantly higher current handling. |
| Dcr Ohm | 58 mΩ | 28.6 mΩ | 22 mΩ | 11.8 mΩ | 28.6 mΩ / 22 mΩ / 11.8 mΩ / 27 mΩ — Lower DCR improves efficiency.; FXL0650-3R3-M: Lower DCR improves efficiency.; FXL1040-3R3-M: Vastly superior DCR improves efficiency.; APH0630T3R3M: Lower DCR improves efficiency. |
| Manufacturer | cjiang | - | - | - | APV — Cross-vendor alternative. |
Application & sourcing insights
Questions & answers
The best alternative depends on your design constraints. For a smaller footprint with upgraded performance, consider FEXL0430A-3R3M. For higher current handling in a larger package, FXL0650-3R3-M is a good choice. Both require a PCB layout change.