Is there a pin-compatible replacement for FXL0840-4R7-M?

No pin-compatible replacement with the same 8.8x8.2mm package has been identified in this review. All functional alternatives require PCB layout modifications.

What risks should I check before replacing FXL0840-4R7-M?

The primary risk is mechanical incompatibility; check package dimensions and ensure your PCB layout can be modified. Also, verify the alternative's electrical characteristics suit your power supply's stability and efficiency targets.

FXL0840-4R7-M Alternatives, Datasheet & Cross Reference | Shenzhen CJiang Technology Co., Ltd.

FXL0840-4R7-M is a 4.7µH power inductor in an 8.8x8.2mm package. While no direct drop-in replacements are identified, several functional alternatives from the same manufacturer offer upgraded electrical performance in different packages.

AI replacement insight

Package riskhigh

All viable alternatives have a different, larger footprint, requiring a mandatory PCB redesign.

Electrical risklow

Alternatives offer superior current handling and lower DCR, which is generally a safe upgrade.

Can it be replaced directly?

No, a direct drop-in replacement for FXL0840-4R7-M was not found. All identified alternatives require board layout changes.

Best replacement path

FXL1350-4R7-M offers the best electrical upgrade but requires a significant board redesign. No direct drop-in replacement was found.

Main risk

Package mismatch is the main risk, preventing direct replacement and requiring a PCB redesign for any alternative.

Recommended alternatives

A functional alternative with higher current ratings, but in a larger physical package.

View details

Alternative comparison matrix

Feature / factor	FXL0840-4R7-M	FXL1050-4R7-M	FXL1350-4R7-M	Compatibility / risk
Package	8.8mm x 8.2mm	10mm x 11.5mm	13.45mm x 12.6mm	10mm x 11.5mm / 13.45mm x 12.6mm — Candidate is larger, requires board redesign.; FXL1350-4R7-M: Candidate is significantly larger, requires board redesign.
Inductance	4.7 µH	4.7 µH	4.7 µH	4.7 µH — Inductance value is identical.; FXL1350-4R7-M: Inductance value is identical.
Current	9.5 A	11.0 A	13.0 A	11.0 A / 13.0 A — Higher Irms provides more thermal margin.; FXL1350-4R7-M: Higher Irms provides more thermal margin.
Saturation Current	11.5 A	15.0 A	21.0 A	15.0 A / 21.0 A — Higher Isat prevents saturation at higher peak currents.; FXL1350-4R7-M: Higher Isat prevents saturation at higher peak currents.
Dcr	26.5 mΩ	14.0 mΩ	9.0 mΩ	14.0 mΩ / 9.0 mΩ — Lower DCR improves efficiency.; FXL1350-4R7-M: Lower DCR improves efficiency.

Application & sourcing insights

Questions & answers

FXL1350-4R7-M offers superior current ratings and lower DCR but requires a larger 13.45x12.6mm PCB footprint. For a closer size, FXL1050-4R7-M is also an electrical upgrade in a 10x11.5mm package.