Equivalent & Substitute Parts for Würth Elektronik 744866563

Part Overview

The Würth Elektronik 744866563 is a 56 mH Common Mode Choke (CMC) designed for two-line power line filtering applications with a maximum current rating of 1.5A and DC resistance of 530mOhm. This through-hole mounted component operates across a temperature range of -40°C to 125°C and complies with ROHS3 standards.

The 744866563 is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring common mode choke functionality with compatible electrical and mechanical specifications.

Substiute Parts

744866563

Würth ElektronikIn Stock: 980744866563 Datasheet

Current PartRFQ

7448040382

Würth ElektronikIn Stock: 10637448040382 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 744866563 is based on the following critical parameters that define functional equivalence:

• Filter Type: Power Line (common mode choke application)
• Number of Lines: 2-line configuration
• Mounting Type: Through Hole
• Package / Case: Vertical, 4 PC Pin
• Voltage Rating - AC: 250V minimum
• Operating Temperature Range: -40°C ~ 125°C
• RoHS Compliance: ROHS3 Compliant

The substitute part 7448040382 maintains compatibility across these core parameters. Variations in inductance value (56 mH vs. 82 mH), current rating (1.5A vs. 2.5A), and DC resistance (530mOhm vs. 170mOhm) are acceptable within the substitution framework, as these represent enhanced electrical performance characteristics suitable for the same application category.

Parameter Comparison

Engineering Selection Recommendations

The substitute part 7448040382 is recommended for applications currently using the obsolete 744866563. The substitute maintains active product status with Würth Elektronik, ensuring ongoing availability and supply chain stability.

Both parts comply with ROHS3 standards and REACH regulations. The substitute part demonstrates improved electrical performance with higher current rating (2.5A vs. 1.5A) and lower DC resistance (170mOhm vs. 530mOhm), while maintaining identical voltage and temperature specifications. The physical footprint remains compatible with through-hole mounting requirements.

Frequently Asked Questions (FAQ)

Q: Can the 7448040382 directly replace the 744866563 in existing designs?

A: Yes. Both parts share identical mounting type (through hole), package configuration (vertical, 4 PC pin), voltage rating (250V AC), and operating temperature range (-40°C ~ 125°C). The substitute provides enhanced current handling and reduced DC resistance.

Q: What are the key differences between these parts?

A: The primary differences are inductance value (56 mH vs. 82 mH), maximum current rating (1.5A vs. 2.5A), and DC resistance (530mOhm vs. 170mOhm). The 7448040382 offers higher performance specifications within the same form factor.

Q: Are there compliance or certification differences?

A: Both parts maintain ROHS3 compliance and REACH unaffected status. No compliance barriers exist for substitution.

Q: Does the higher inductance of the substitute part affect circuit performance?

A: Inductance value selection depends on specific circuit requirements. The 82 mH value of the substitute part provides increased filtering capability compared to the 56 mH original specification.

Q: What is the physical size difference?

A: The 744866563 measures 37.00mm L × 26.00mm W × 45.00mm H. The 7448040382 measures 28.00mm L × 19.00mm W × 32.00mm H, offering a more compact footprint while maintaining the same pin configuration.