Is there a pin-compatible replacement for CY54-3.3UH?

No, a pin-compatible replacement for CY54-3.3UH was not identified. All reviewed candidates have different physical packages or mounting styles, making them incompatible with the existing PCB layout.

What risks should I check before replacing CY54-3.3UH?

The main risk is physical incompatibility; check the package dimensions and footprint. Electrically, verify that the substitute's current ratings (Irms and Isat) and DCR are acceptable for your application. Also check the operating temperature range.

CY54-3.3UH Alternatives, Datasheet & Cross Reference | Shenzhen Hanxia Electronics Co., LTD

Searching for a replacement for the CY54-3.3UH power inductor? While no direct drop-in substitutes were found, we've analyzed several functional alternatives that may work for new designs or with board modifications.

AI replacement insight

Package riskhigh

No candidates match the 5.8x5.2mm SMD footprint; a board redesign is mandatory.

Electrical risklow

Functional alternatives offer superior current and DCR, but temperature range may be narrower.

Can it be replaced directly?

No direct, drop-in replacement for CY54-3.3UH was found. All reviewed alternatives with comparable or better electrical specifications have different, larger packages or mounting styles.

Best replacement path

Board redesign required

Main risk

Package incompatibility is the primary risk, preventing a direct swap on existing PCBs.

Recommended alternatives

A functional alternative with higher current ratings but a much larger package requiring a new PCB layout.

View details

Alternative comparison matrix

Feature / factor	CY54-3.3UH	MWSA1004S-3R3MT	PSPMAA1040H-3R3M-ANP	Compatibility / risk
Package	5.8 mm x 5.2 mm	10.0mm x 11.5mm	10.2mm x 11.0mm	10.0mm x 11.5mm / 10.2mm x 11.0mm — Not a drop-in replacement; requires board redesign.; PSPMAA1040H-3R3M-ANP: Not a drop-in replacement; requires board redesign.
Current	3.7A	7.96A	10.0A	7.96A / 10.0A — Candidate has significantly higher current handling.; PSPMAA1040H-3R3M-ANP: Candidate has significantly higher current handling.
Dcr	31.2mΩ	16.0mΩ	12.0mΩ	16.0mΩ / 12.0mΩ — Lower DCR results in less power loss.; PSPMAA1040H-3R3M-ANP: Lower DCR results in less power loss.
Temperature	-55°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C — Narrower operating range on the low end.; PSPMAA1040H-3R3M-ANP: Narrower operating range on the low end.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. The best alternatives, like PSPMAA1040H-3R3M-ANP, are electrically superior but require a board redesign due to a much larger package.