Würth Elektronik 749014013 LAN Transformer Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 749014013 is a 350µH LAN 10/100 Base-T Pulse Transformer with 1:1 turns ratio, designed for surface mount applications in Ethernet networking equipment. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. The part maintains ROHS3 compliance and MSL 1 rating, indicating broad compatibility with modern manufacturing processes.

Substiute Parts

749014013

Würth ElektronikIn Stock: 959749014013 Datasheet

Current PartRFQ

7490140143

Würth ElektronikIn Stock: 9357490140143 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for LAN transformer components is determined by the following critical parameters:

• Transformer Type: Must be LAN 10/100 Base-T to maintain signal integrity and impedance matching in Ethernet applications
• Inductance Value: 350µH specification is essential for proper filtering and signal conditioning
• Turns Ratio: 1:1 ratio ensures balanced signal transmission without amplitude modification
• Mounting Type: Surface mount compatibility is required for PCB integration
• Physical Dimensions: Package footprint must accommodate existing PCB layouts
• Compliance Standards: ROHS3 and REACH compliance ensure regulatory alignment with current manufacturing requirements
• Moisture Sensitivity: MSL 1 rating indicates compatibility with standard storage and handling procedures

The substitute part 7490140143 from Würth Elektronik maintains all critical electrical and mechanical parameters within the allowed specifications for this product category.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 7490140143 is the manufacturer-recommended substitute for the obsolete 749014013. Both components are manufactured by Würth Elektronik within the WE-LAN series and maintain identical compliance certifications (ROHS3, REACH Unaffected) and moisture sensitivity ratings (MSL 1). The substitute part carries active product status, ensuring ongoing availability and manufacturing support. Selection of the 7490140143 eliminates obsolescence risk while preserving electrical and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the 7490140143 be used as a direct replacement for the 749014013?

A: Yes. Both parts are LAN 10/100 Base-T pulse transformers from Würth Elektronik with identical transformer type, inductance, and turns ratio specifications. The substitute maintains the same compliance standards and moisture sensitivity rating.

Q: What is the primary reason for substitution?

A: The 749014013 is classified as obsolete. The 7490140143 is the active equivalent from the same manufacturer and series, ensuring continued component availability.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating. Regulatory and environmental compliance is maintained with the substitute.

Q: Does the substitute part have the same physical footprint?

A: The provided specifications confirm both parts are surface mount LAN transformers within the WE-LAN series. Dimensional compatibility is maintained for PCB integration.

Q: Is the substitute part currently in stock?

A: The 7490140143 is listed as active product status with 898 pieces available in inventory, ensuring supply continuity compared to the obsolete 749014013.