Is there a pin-compatible replacement for CY43-47UH?

No pin-compatible replacement is currently confirmed. All reviewed alternatives have different package sizes and will not fit the same PCB layout as the CY43-47UH, which is in a 4.5x4.0mm package.

What risks should I check before replacing CY43-47UH?

The main risk is the physical package mismatch; all alternatives are larger and require a PCB redesign. Also, check the wider inductance tolerance (±20% vs. the original's ±10%) and ensure the new component's saturation characteristics are suitable for your application.

CY43-47UH Alternatives, Datasheet & Cross Reference | Shenzhen Hanxia Electronics Co., LTD

CY43-47UH is a compact 47µH shielded power inductor. While no direct drop-in replacements are identified, several functional alternatives with superior electrical characteristics are available if a PCB layout change is possible.

AI replacement insight

Package riskhigh

All alternatives have larger footprints and will not fit the existing PCB layout.

Electrical risklow

Candidates offer higher current ratings and lower DCR, but wider tolerance must be evaluated.

Can it be replaced directly?

No, there is no direct, drop-in replacement for the CY43-47UH among the candidates reviewed. All options require a PCB layout change due to larger package sizes.

Best replacement path

For new designs or redesigns, candidates like TAIYO YUDEN's NR6045T470M offer a good balance of improved performance in a standard package, though larger than the original.

Main risk

Physical incompatibility. All potential alternatives are in significantly larger packages, requiring a mandatory PCB redesign.

Recommended alternatives

A high-current functional alternative with very low DCR, but in a much larger package with wider tolerance.

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Alternative comparison matrix

Feature / factor	CY43-47UH	FCH1365-470M	NR6045T470M	SLH0704S470MTT	Compatibility / risk
Inductance	47 µH	47 µH	47 µH	47 µH	47 µH — Inductance matches target value.; NR6045T470M: Inductance matches target value.; SLH0704S470MTT: Inductance matches target value.
Current	0.5 A	6.0 A	1.3 A	1.0 A	6.0 A / 1.3 A / 1.0 A — Vastly superior current handling.; NR6045T470M: Significantly higher current rating.; SLH0704S470MTT: Higher current rating provides more margin.
Dcr	820 mΩ	63 mΩ	211 mΩ	266 mΩ	63 mΩ / 211 mΩ / 266 mΩ — Extremely low DCR for high efficiency.; NR6045T470M: Much lower DCR improves efficiency.; SLH0704S470MTT: Lower DCR improves efficiency.
Package	4.5x4.0mm	13x13mm	6.0x6.0mm	7.3x7.3mm	13x13mm / 6.0x6.0mm / 7.3x7.3mm — Very large package (1365 size), requires significant board space.; NR6045T470M: Larger package (6045 size), requires PCB redesign.; SLH0704S470MTT: Significantly larger package, requires PCB redesign.
Tolerance	±10%	±20%	±20%	±20%	±20% — Wider tolerance may impact circuit performance.; NR6045T470M: Wider tolerance may impact circuit performance.; SLH0704S470MTT: Wider tolerance may impact circuit performance.

Application & sourcing insights

Questions & answers

Currently, no direct drop-in replacement has been identified. However, parts like TAIYO YUDEN's NR6045T470M offer superior current handling and lower resistance, but require a larger PCB footprint and have a wider inductance tolerance.