74404064680 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74404064680 is a 68 µH semi-shielded drum core wirewound inductor rated for 1 A continuous current with 289 mOhm DC resistance. This component is designed for surface mount applications in the WE-LQS series and maintains active product status with AEC-Q200 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this inductance value and current rating category.

Substiute Parts

74404064680

Würth ElektronikIn Stock: 207174404064680 Datasheet

Current PartRFQ

SDCHA1V6045-680-R

Eaton - Electronics DivisionIn Stock: 1957SDCHA1V6045-680-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74404064680 is determined by the following critical parameters:

• Inductance Value: 68 µH within ±20% tolerance
• Current Rating: Minimum 1 A continuous current capability
• Saturation Current (Isat): Minimum 1.3 A to maintain performance margin
• DC Resistance (DCR): Maximum 305 mOhm to limit power dissipation variance
• Package Dimensions: 6.00 x 6.00 x 4.50 mm (nonstandard 6045 case)
• Shielding Configuration: Semi-shielded drum core construction
• Surface Mount Compatibility: SMD mounting type required
• Frequency Test Point: 100 kHz inductance measurement standard
• Compliance: AEC-Q200 rated for automotive applications

The Eaton SDCHA1V6045-680-R meets all substitution criteria within these parameter boundaries.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 74404064680 and Eaton SDCHA1V6045-680-R are active products with AEC-Q200 automotive qualification. The Eaton substitute provides equivalent inductance and shielding characteristics with improved current and saturation ratings, resulting in lower thermal stress margins in the application circuit. The DC resistance differential of 16 mOhm (5.5% variance) remains within acceptable power dissipation tolerances for 68 µH inductor applications at 1 A operation. Both components maintain identical package footprints and surface mount compatibility, enabling direct PCB layout substitution without redesign. The extended operating temperature range of the Eaton part (-55 to 125°C versus -40 to 125°C) provides additional thermal margin for applications requiring low-temperature performance.

Frequently Asked Questions (FAQ)

Q: Can the Eaton SDCHA1V6045-680-R be used as a direct replacement for the Würth Elektronik 74404064680?

A: Yes. Both components share identical inductance values (68 µH ±20%), package dimensions (6.00 x 6.00 x 4.50 mm), semi-shielded configuration, and AEC-Q200 compliance. The Eaton part provides higher current and saturation ratings with compatible DC resistance variance.

Q: What is the significance of the DC resistance difference between these parts?

A: The Würth part specifies 289 mOhm while the Eaton part specifies 305 mOhm. This 16 mOhm difference represents 5.5% variance and results in proportionally increased power dissipation. At 1 A operation, this translates to approximately 0.256 mW additional loss in the Eaton component, which is negligible for most applications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the Würth Elektronik 74404064680 and Eaton SDCHA1V6045-680-R carry AEC-Q200 qualification, confirming suitability for automotive-grade reliability and temperature cycling requirements.

Q: What core material differences exist between these inductors?

A: The Würth part uses ferrite core material while the Eaton part uses nickel zinc ferrite (NiZn). Both materials support the specified 68 µH inductance and semi-shielded configuration at the 100 kHz test frequency.

Q: Can these parts be used interchangeably on the same PCB without layout modifications?

A: Yes. Both components use identical nonstandard 6045 package dimensions and surface mount configuration, allowing direct footprint compatibility without PCB redesign.

Q: What is the moisture sensitivity level for both parts?

A: Both the Würth Elektronik 74404064680 and Eaton SDCHA1V6045-680-R are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.