Würth Elektronik 74404064010 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74404064010 is a 1 µH semi-shielded drum core wirewound inductor rated for 5.14 A continuous current with 11mOhm DC resistance. This component is part of the WE-LQS series and maintains active product status with AEC-Q200 qualification. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for surface mount applications requiring 1 µH inductance in a 6.00mm x 6.00mm footprint.

Substiute Parts

74404064010

Würth ElektronikIn Stock: 324174404064010 Datasheet

Current PartRFQ

SDCHA1V6045-1R0-R

Eaton - Electronics DivisionIn Stock: 2542SDCHA1V6045-1R0-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74404064010 is determined by the following criteria:

Inductance Value: Substitute parts must provide 1 µH inductance at 100 kHz test frequency. This is the primary functional requirement.

Current Capacity: The substitute must support a minimum continuous current rating equal to or greater than 5.14 A. Higher current ratings provide additional design margin.

DC Resistance: Substitute parts must maintain DC resistance within acceptable limits for the application. Lower DCR values reduce power dissipation and heat generation.

Saturation Current: The substitute's saturation current must exceed the application's peak current requirements to prevent inductor saturation and performance degradation.

Physical Package: Substitute parts must fit the 6.00mm x 6.00mm x 4.50mm maximum envelope to ensure PCB compatibility without layout modifications.

Shielding Configuration: Semi-shielded construction is required to maintain EMI performance characteristics equivalent to the original part.

Operating Temperature Range: The substitute must support the -40°C to 125°C operating window or a superset thereof.

Mounting Technology: Surface mount configuration is mandatory for assembly process compatibility.

The Eaton SDCHA1V6045-1R0-R meets all substitution criteria within these parameters.

Parameter Comparison

Engineering Selection Recommendations

The Eaton SDCHA1V6045-1R0-R is a qualified substitute for the Würth Elektronik 74404064010 based on the following engineering factors:

Electrical Performance: Both parts deliver 1 µH inductance at 100 kHz with identical saturation margin characteristics. The Eaton substitute provides 8.0 A continuous current capacity versus the 5.14 A requirement, establishing additional design headroom. DC resistance of 10mOhm in the substitute is lower than the 11mOhm specification, resulting in reduced power dissipation.

Mechanical Compatibility: Identical 6.00mm x 6.00mm x 4.50mm package dimensions ensure direct PCB footprint compatibility without layout revision.

Thermal Performance: The Eaton part extends the low-temperature operating limit to -55°C, providing broader environmental coverage than the -40°C minimum of the original part.

Quality and Compliance: Both components carry AEC-Q200 automotive qualification and MSL 1 moisture sensitivity rating. Both are rated for the full -40 to 125°C industrial temperature range or better.

Core Material Difference: The Würth part uses ferrite core material while the Eaton substitute uses nickel zinc ferrite (NiZn). Both materials are semi-shielded and suitable for the specified inductance and current requirements at 100 kHz test frequency.

Frequently Asked Questions (FAQ)

Q: Can the Eaton SDCHA1V6045-1R0-R be used as a direct replacement without circuit modification?

A: Yes. Both parts provide 1 µH inductance in identical 6.00mm x 6.00mm x 4.50mm packages with surface mount compatibility. The Eaton substitute meets or exceeds all critical electrical parameters including current rating, saturation current, and DC resistance.

Q: What is the difference between ferrite and nickel zinc ferrite core materials?

A: Both materials are ferrite-based and suitable for this inductance and frequency range. The core material difference does not affect the specified electrical parameters at 100 kHz test frequency. Material selection is an internal design choice by each manufacturer.

Q: Does the lower DC resistance of the Eaton part affect circuit performance?

A: Lower DC resistance (10mOhm versus 11mOhm) reduces power dissipation and heat generation. This is a beneficial characteristic that improves efficiency without affecting the 1 µH inductance specification.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the Würth 74404064010 and Eaton SDCHA1V6045-1R0-R carry AEC-Q200 qualification, confirming suitability for automotive-grade reliability requirements.

Q: What is the significance of the ±20% tolerance on the Eaton part versus ±30% on the Würth part?

A: The Eaton substitute has a tighter inductance tolerance specification. This means the actual inductance value will be closer to the nominal 1 µH specification. Tighter tolerance is advantageous for precision circuit applications.

Q: Can I use the Eaton part in applications requiring the extended -55°C low-temperature rating?

A: Yes. The Eaton SDCHA1V6045-1R0-R supports -55 to 125°C operation, exceeding the -40 to 125°C range of the original part. This makes it suitable for extended low-temperature environments.

Q: Are there any packaging or moisture sensitivity differences?

A: Both parts are supplied in Tape & Reel packaging with MSL 1 (Unlimited) moisture sensitivity rating. Handling and storage requirements are equivalent.