Is there a pin-compatible replacement for FXL0420-1R2-M?

No direct pin-compatible replacement with identical performance was found. APH0420T1R5M shares the same package and pinout but has different electrical characteristics that must be reviewed by an engineer before use.

What risks should I check before replacing FXL0420-1R2-M?

Key risks include package size mismatch, which requires a new PCB layout, and electrical differences like lower current ratings (Irms) or higher DC resistance (DCR), which can lead to overheating and reduced efficiency. Always verify performance in your application.

FXL0420-1R2-M Alternatives, Datasheet & Cross Reference | Shenzhen CJiang Technology Co., Ltd.

FXL0420-1R2-M is a compact 1.2µH power inductor. While no direct drop-in replacement has been identified, alternatives exist that offer upgraded performance in a larger package or similar form factor with performance trade-offs.

AI replacement insight

Package riskhigh

One strong candidate has a larger package, making it incompatible without a board redesign.

Electrical riskhigh

The same-package alternative has lower current ratings and higher resistance, risking overheating and circuit instability.

Can it be replaced directly?

No direct, drop-in replacement with identical performance was found. Alternatives require either a PCB layout change or careful engineering review due to different electrical parameters.

Best replacement path

For a performance upgrade, use FXL0530-1R2-M if a PCB layout change is possible. If the footprint must be maintained, APH0420T1R5M is a high-risk option that requires extensive validation.

Main risk

The primary risks are physical package mismatch or electrical performance degradation, such as lower current handling and higher power loss.

Recommended alternatives

Performance upgrade with identical inductance but in a larger package.

View details

Alternative comparison matrix

Feature / factor	FXL0420-1R2-M	FXL0530-1R2-M	APH0420T1R5M	Compatibility / risk
Package	4.4mm x 4.2mm	5.4mm x 5.2mm	4.4mm x 4.2mm	5.4mm x 5.2mm / 4.4mm x 4.2mm — Candidate is larger, requires layout change.; APH0420T1R5M: Package size matches.
Inductance	1.2µH	1.2µH	1.5µH	1.2µH / 1.5µH — Inductance value matches.; APH0420T1R5M: Inductance is 25% higher, may affect circuit tuning.
Current	5.4A	8.5A	5.0A	8.5A / 5.0A — Higher RMS current rating is a significant upgrade.; APH0420T1R5M: Lower RMS current rating, risk of overheating.
Saturation Current A	5.2A	11.0A	5.5A	11.0A / 5.5A — Higher saturation current provides more headroom.; APH0420T1R5M: Slightly higher saturation current.
Dcr Ohm	27mΩ	16mΩ	46mΩ	16mΩ / 46mΩ — Lower DCR improves efficiency.; APH0420T1R5M: Significantly higher DCR will reduce efficiency.

Application & sourcing insights

Questions & answers

For higher performance, FXL0530-1R2-M offers better current ratings but requires a larger PCB footprint. For a similar footprint, APH0420T1R5M is a high-risk option with a lower current rating and higher resistance that requires careful circuit validation.