Is there a pin-compatible replacement for CY43-22UH?

No, a direct pin-compatible replacement for CY43-22UH was not identified. All evaluated alternatives have different package dimensions, which means they are not drop-in replacements and would require changes to the circuit board layout.

What risks should I check before replacing CY43-22UH?

Before replacing CY43-22UH, you must check three main risks: 1) Package Footprint: Ensure the substitute's larger size fits your PCB. 2) Inductance Tolerance: Most alternatives have a ±20% tolerance, which is weaker than the target's ±10%. 3) Temperature Range: Some parts may have a narrower operating temperature range.

CY43-22UH Alternatives, Datasheet & Cross Reference | Shenzhen Hanxia Electronics Co., LTD

Finding a substitute for the CY43-22UH inductor involves balancing electrical upgrades with physical constraints. While several functional alternatives offer higher performance, none are direct drop-in replacements due to package differences.

AI replacement insight

Package riskhigh

All candidates have larger footprints, requiring PCB redesign. No form-fit match found.

Electrical risklow

Most candidates offer superior current and DCR ratings. The main electrical caveat is a weaker inductance tolerance (±20% vs ±10%).

Sourcing risklow

Candidates are from major manufacturers like TDK and Sunlord, suggesting good availability.

Can it be replaced directly?

No direct, pin-compatible replacement was found among the candidates. All options have different package footprints, requiring a PCB layout modification.

Best replacement path

SWPA5020S220MT is the most promising functional alternative, offering superior current handling and DCR. However, it requires verifying that the slightly larger 5.0x5.0mm footprint is acceptable for the PCB layout.

Main risk

The primary risk across all potential substitutes is the package mismatch. None of the candidates are drop-in replacements for the 4.5x4.0mm target part.

Recommended alternatives

A strong functional alternative with better electricals and a closer, but not identical, package size.

View details

Alternative comparison matrix

Feature / factor	CY43-22UH	SWPA5020S220MT	VLS6045EX-220M	Compatibility / risk
Package	4.5x4.0mm	5.0x5.0mm	6.0x6.0mm	5.0x5.0mm / 6.0x6.0mm — Slightly larger footprint requires PCB layout check.; VLS6045EX-220M: Not a drop-in replacement; requires PCB layout change.
Current	0.6A	1.15A (Isat)	2.4A (Isat)	1.15A (Isat) / 2.4A (Isat) — Higher current handling.; VLS6045EX-220M: Significantly higher current handling.
Dcr Ohm	0.27Ω	0.200Ω	0.105Ω	0.200Ω / 0.105Ω — Lower DCR improves efficiency.; VLS6045EX-220M: Lower DCR improves efficiency.
Tolerance	±10%	±20%	±20%	±20% — Wider tolerance may affect circuit precision.; VLS6045EX-220M: Wider tolerance may affect circuit precision.
Temperature	-55°C to +125°C	-	-40°C to +125°C	-40°C to +125°C — Reduced lower operating temperature limit.

Application & sourcing insights

Questions & answers

The best functional alternative is SWPA5020S220MT by Sunlord. It offers higher current ratings and lower DCR, but you must verify if its slightly larger 5.0x5.0mm package fits your PCB.