Is there a pin-compatible replacement for CYA1250-3.3UH?

No pin-compatible replacement has been verified. Candidates with similar electrical properties were found in different packages (e.g., 1770, 1265), which are not physically compatible with the 1250 footprint.

What risks should I check before replacing CYA1250-3.3UH?

Key risks include: 1) Package Mismatch: Ensure the substitute's footprint and height fit your PCB layout. 2) DCR: A higher DC resistance increases power loss and heat. 3) Current Ratings: Verify both saturation (Isat) and thermal (Irms/Idc) currents meet or exceed your design's peak and continuous needs.

CYA1250-3.3UH Alternatives, Datasheet & Cross Reference | SHOU HAN

Finding a substitute for the SHOU HAN CYA1250-3.3UH, a 3.3µH power inductor, involves matching its key electrical parameters and 1250 package. Alternatives may offer higher current ratings but often require PCB layout changes.

AI replacement insight

Package riskhigh

No alternatives found in the same 1250 package with matching parameters.

Electrical riskmedium

Alternates have higher current ratings but may have higher DCR, impacting efficiency and thermals.

Sourcing risklow

Multiple manufacturers produce similar high-current inductors.

Can it be replaced directly?

No direct, drop-in replacement for CYA1250-3.3UH is currently identified. All suitable candidates require a PCB layout change due to different package sizes.

Best replacement path

Functional alternate requiring board redesign.

Main risk

Package incompatibility is the main risk, preventing a direct drop-in replacement.

Recommended alternatives

Functional alternate with higher current ratings but different package requiring layout change.

View details

Alternative comparison matrix

Feature / factor	CYA1250-3.3UH	SMMS1770-3R3M	CYA1265-3.3UH	Compatibility / risk
Package	1250	1770	1265	1770 / 1265 — Requires PCB layout change.; CYA1265-3.3UH: Requires PCB layout change.
Inductance	3.3µH	3.3µH	3.3µH	3.3µH — matched; CYA1265-3.3UH: matched
Saturation Current A	32A	54A	45A	54A / 45A — Higher saturation current provides more margin.; CYA1265-3.3UH: Higher saturation current provides more margin.
Current	20A	28A	25A	28A / 25A — Higher heat rating current (Idc).; CYA1265-3.3UH: Higher heat rating current (Idc).
Dcr Ohm	5.5mΩ max	4.2mΩ max	5.0mΩ typ	4.2mΩ max / 5.0mΩ typ — Better max DCR, slightly worse typical DCR (3.68mΩ vs 3.5mΩ).; CYA1265-3.3UH: Higher DCR will increase power loss and heat.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. Functional alternatives like SXN's SMMS1770-3R3M offer higher current ratings but come in a different package, requiring a board redesign. Always verify all parameters for your specific application.