Is there a pin-compatible replacement for CYA1040-33UH?

No, a 1-to-1 pin-compatible replacement with matching key electrical specifications was not identified. While several alternatives share the same package and pinout, their inductance and current ratings differ significantly.

What risks should I check before replacing CYA1040-33UH?

Before replacing CYA1040-33UH, you must verify the substitute's inductance, saturation current (Isat), heat rating current (Idc), and DC resistance (DCR). An incorrect inductance will affect circuit stability and ripple, while lower current ratings can cause overheating or failure.

CYA1040-33UH Alternatives, Datasheet & Cross Reference | Shenzhen Hanxia Electronics Co., LTD

Explore alternatives for the CYA1040-33UH, a 33µH shielded power inductor. This guide analyzes potential substitutes, highlighting key differences in electrical parameters and package compatibility to inform your design choices.

AI replacement insight

Electrical riskhigh

No candidate matches the target's 33µH inductance and 4.0A Idc rating. Mismatches will impact DC-DC converter performance and reliability.

Package risklow

Several candidates share the same 11.6mm x 10.1mm SMD package, ensuring mechanical and layout compatibility.

Can it be replaced directly?

There is no direct, pin-to-pin replacement for CYA1040-33UH among the candidates reviewed. All options require careful re-evaluation of circuit performance.

Best replacement path

No direct drop-in replacement was found. The closest option is CYA1050-47UH, which shares the same package but has different inductance and current ratings, requiring engineering validation.

Main risk

The primary risk is electrical mismatch. Using a substitute with incorrect inductance will alter circuit behavior (e.g., ripple current, stability), while lower current ratings can lead to saturation or overheating.

Recommended alternatives

Form-fit compatible with different electrical parameters; requires engineering review before use.

View details

Alternative comparison matrix

Feature / factor	CYA1040-33UH	CYA1050-47UH	CYA1040-68UH	Compatibility / risk
Package	11.6mm x 10.1mm SMD	11.6mm x 10.1mm SMD	11.6mm x 10.1mm SMD	11.6mm x 10.1mm SMD — Same footprint, but from a different series (CYA1050 vs CYA1040).; CYA1040-68UH: Same package and product family.
Inductance	33 µH	47 µH	68 µH	47 µH / 68 µH — Inductance is ~42% higher, will affect circuit performance.; CYA1040-68UH: Inductance is more than double.
Current	Isat: 4.5A, Idc: 4.0A	Isat: 5A, Idc: 3.5A	Isat: 3.5A, Idc: 2.0A	Isat: 5A, Idc: 3.5A / Isat: 3.5A, Idc: 2.0A — Saturation current is higher, but heat rating current is lower.; CYA1040-68UH: Both saturation and heat rating currents are significantly lower.
Resistance	85 mΩ (Typ)	130 mΩ (Typ)	230 mΩ (Typ)	130 mΩ (Typ) / 230 mΩ (Typ) — Higher DC Resistance will increase losses.; CYA1040-68UH: DC Resistance is much higher.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found. The closest candidate, CYA1050-47UH, has a different inductance (47µH) and lower heat rating current (3.5A), and requires engineering review before use.