Würth Elektronik 74404052033 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74404052033 is a 3.3 µH semi-shielded wirewound inductor rated for 2.6 A continuous current with a DC resistance of 42.2mOhm. This component is part of the WE-LQS series and maintains active product status with full AEC-Q200 compliance. Substitute parts are identified to provide equivalent electrical performance and mechanical compatibility for applications requiring 3.3 µH inductance in surface mount configurations where the original part may be unavailable or require alternative sourcing.

Substiute Parts

74404052033

Würth ElektronikIn Stock: 315874404052033 Datasheet

Current PartRFQ

SDCHA1V5020-3R3R

Eaton - Electronics DivisionIn Stock: 3373SDCHA1V5020-3R3R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74404052033 is determined by strict equivalence across the following critical parameters:

Inductance Value: 3.3 µH nominal inductance is the primary selection criterion. Tolerance variations (±30% for main part, ±20% for substitute) remain within acceptable operational margins for most applications.

Current Rating: The substitute part must support the application's current requirements. The main part is rated for 2.6 A continuous current; substitute parts with equal or higher current ratings (2.8 A or greater) are acceptable.

DC Resistance: DCR values must be comparable to ensure equivalent power dissipation characteristics. The main part specifies 42.2mOhm; substitutes with DCR within ±5% are functionally equivalent.

Saturation Current: Both parts specify 4.6 A Isat, ensuring identical saturation behavior.

Shielding Configuration: Semi-shielded construction is maintained across all parts to preserve electromagnetic compatibility characteristics.

Package Dimensions: All parts conform to 5.00mm x 5.00mm x 2.00mm surface mount package specifications.

Thermal Range: Operating temperature ranges must encompass the application's operating environment. The substitute part extends the lower temperature limit to -55°C, providing broader environmental coverage.

Compliance Standards: AEC-Q200 certification is maintained across all parts, ensuring automotive-grade reliability.

Parameter Comparison

Engineering Selection Recommendations

Both the Würth Elektronik 74404052033 and Eaton SDCHA1V5020-3R3R are active products with AEC-Q200 certification, confirming suitability for automotive and industrial applications requiring high reliability standards.

The Eaton SDCHA1V5020-3R3R substitute provides equivalent electrical performance with the following characteristics:

Current rating of 2.8 A exceeds the main part's 2.6 A specification, providing additional design margin in current-limited applications.

DC resistance of 43mOhm is within 1.9% of the main part's 42.2mOhm specification, ensuring comparable power dissipation.

Inductance tolerance of ±20% is tighter than the main part's ±30%, offering improved consistency in production environments.

Extended operating temperature range of -55°C to 125°C accommodates broader environmental specifications compared to the main part's -40°C to 125°C range.

Both parts maintain identical saturation current (4.6 A), semi-shielded configuration, surface mount packaging (5.00mm x 5.00mm x 2.00mm), and MSL 1 moisture sensitivity rating.

Selection between these parts should be based on availability, lead time, and specific application temperature requirements. Both parts are functionally interchangeable for 3.3 µH inductance applications within the specified current and thermal operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the Eaton SDCHA1V5020-3R3R directly replace the Würth Elektronik 74404052033?

A: Yes. Both parts share identical inductance (3.3 µH), saturation current (4.6 A), shielding configuration (semi-shielded), package dimensions (5.00mm x 5.00mm x 2.00mm), and AEC-Q200 compliance. The Eaton part's higher current rating (2.8 A vs. 2.6 A) and tighter inductance tolerance (±20% vs. ±30%) provide equivalent or improved performance characteristics.

Q: What are the key differences between these parts?

A: The primary differences are: (1) Current rating: Eaton part rated for 2.8 A versus Würth part at 2.6 A; (2) Inductance tolerance: Eaton ±20% versus Würth ±30%; (3) Operating temperature range: Eaton -55°C to 125°C versus Würth -40°C to 125°C; (4) DC resistance: Eaton 43mOhm versus Würth 42.2mOhm (1.9% difference); (5) Self-resonant frequency: Eaton 66 MHz versus Würth 70 MHz.

Q: Are both parts suitable for automotive applications?

A: Yes. Both parts carry AEC-Q200 certification, confirming compliance with automotive reliability and quality standards.

Q: What is the significance of the ±30% and ±20% inductance tolerances?

A: Inductance tolerance defines the acceptable range of actual inductance values around the nominal 3.3 µH specification. The Eaton part's ±20% tolerance provides tighter control, resulting in more consistent inductance values across production batches. The Würth part's ±30% tolerance allows wider variation but remains acceptable for most circuit applications where inductance precision is not critical.

Q: Can these parts be used interchangeably in high-current applications?

A: The Eaton SDCHA1V5020-3R3R is preferred for applications approaching 2.6 A continuous current due to its 2.8 A rating, providing additional thermal margin. Both parts share identical 4.6 A saturation current specifications.

Q: Are there any temperature-related considerations for part selection?

A: The Eaton part's extended lower temperature limit (-55°C versus -40°C) makes it suitable for applications requiring operation in colder environments. Both parts support the same upper temperature limit of 125°C.

Q: Do both parts have identical moisture sensitivity ratings?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity concerns and unlimited shelf life under standard storage conditions.