Is there a pin-compatible replacement for XRCD43-100M?

While no replacement is guaranteed to be 100% pin-compatible without verification, the XR0420-100M and SMS0420-100MT have nearly identical package dimensions, making them strong candidates. Always check the datasheet land patterns before design-in.

What risks should I check before replacing XRCD43-100M?

Key risks include: 1) Physical Footprint: Ensure the replacement's land pattern matches your PCB. 2) DC Resistance (DCR): A higher DCR will reduce efficiency. 3) Current Ratings: Ensure both RMS and saturation currents meet your needs. 4) Shielding: The target is unshielded; a shielded replacement may alter EMI.

XRCD43-100M Alternatives, Datasheet & Cross Reference | Dongguan Xiangru Electronics Co., Ltd

Finding a replacement for the XRCD43-100M, a 10µH, 1.15A unshielded inductor in a 4.5x4.0mm SMD package, involves matching inductance, current ratings, and physical footprint. Several alternatives offer higher current handling in similar packages.

AI replacement insight

Package riskmedium

Alternatives are similarly sized but not identical; PCB land pattern verification is critical.

Electrical risklow

Most candidates offer upgraded current, but some have higher DCR, impacting efficiency.

Can it be replaced directly?

No exact drop-in replacement is confirmed. However, XR0420-100M is a very close form-fit-function candidate with upgraded current, requiring verification of the land pattern and tolerance for higher DC resistance.

Best replacement path

Consider XR's own XR0420-100M, which offers higher current in a nearly identical package, but note the higher DCR. For cross-vendor options, SMS0420-100MT is also a strong candidate.

Main risk

The main risks are physical footprint mismatch and changes in DC Resistance (DCR), which can affect board layout, circuit efficiency, and thermal performance.

Recommended alternatives

Strong alternative from the same manufacturer with higher current in a nearly identical package.

View details

Alternative comparison matrix

Feature / factor	XRCD43-100M	XR0420-100M	SMS0420-100MT	Compatibility / risk
Package	4.5x4.0mm	4.4x4.2mm	4.6x4.2mm	4.4x4.2mm / 4.6x4.2mm — Very similar size, land pattern verification required.; SMS0420-100MT: Very similar size, land pattern verification required.
Current	1.15A	1.6A	1.6A	1.6A — Higher current rating is a safe upgrade.; SMS0420-100MT: Higher current rating is a safe upgrade.
Dcr Ohm	182mΩ	282mΩ	220mΩ	282mΩ / 220mΩ — Higher DCR will slightly reduce efficiency.; SMS0420-100MT: Higher DCR will slightly reduce efficiency.
Saturation Current A	Unknown	2.0A	-	2.0A — Target Isat is unknown, but candidate is likely an upgrade.
Shielding	Unshielded	-	Shielded	Shielded — May improve EMI performance.

Application & sourcing insights

Questions & answers

The XR0420-100M is a strong alternative from the same manufacturer. It offers a higher current rating (1.6A vs 1.15A) in a very similar 4.4x4.2mm package, though its DC resistance is slightly higher.