WE-LAN 749023016 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 749023016 is a 350µH LAN 1000 Base-T pulse transformer designed for Surface Mount applications in 10/100/1000 Mbps Ethernet networks. This component features a 1CT:1CT turns ratio configuration and operates across the 0°C to 70°C temperature range. The part is classified as Obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and legacy system support.

Substiute Parts

749023016

Würth ElektronikIn Stock: 837749023016 Datasheet

Current PartRFQ

749023015B

Würth ElektronikIn Stock: 714749023015B Datasheet

MFR RecommendedRFQ

H6062FNL

Pulse ElectronicsIn Stock: 2154H6062FNL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 749023016 is determined by the following critical parameters:

• Transformer Type: LAN 1000 Base-T or LAN 10/100/1000 Base-T (backward compatible)
• Inductance: 350µH (exact match required)
• Turns Ratio: 1CT:1CT configuration (primary and secondary)
• Mounting Type: Surface Mount
• Operating Temperature Range: 0°C ~ 70°C minimum
• Compliance: ROHS3 and REACH Unaffected status

Substitute parts must maintain electrical equivalence in inductance and turns ratio while supporting the same LAN speed classifications. Physical dimensions may vary within acceptable PCB layout tolerances for Surface Mount assembly. Moisture sensitivity and regulatory compliance must meet or exceed the original specification.

Parameter Comparison

Engineering Selection Recommendations

749023015B (Würth Elektronik - Manufacturer Recommended)

This part is the manufacturer-recommended substitute and carries Active product status. As a Würth Elektronik component, it maintains design continuity with the original 749023016. ROHS3 compliance and REACH Unaffected status align with regulatory requirements. This option is preferred for applications requiring direct manufacturer support and design validation.

H6062FNL (Pulse Electronics - Cross-Manufacturer Alternative)

This part provides functional equivalence with confirmed 350µH inductance and 1CT:1CT turns ratio configuration for both transmitter and receiver paths. Active product status ensures long-term availability. RoHS compliance and REACH Unaffected status satisfy regulatory requirements. Physical dimensions differ slightly (0.689" L x 0.600" W vs. 0.720" L x 0.480" W), requiring PCB layout verification. This option is suitable for applications where cross-manufacturer sourcing is acceptable and inventory availability is prioritized.

Frequently Asked Questions (FAQ)

Q: Can the 749023015B directly replace the 749023016 without PCB modifications?

A: The 749023015B is the manufacturer-recommended substitute. Specific dimensional data for the 749023015B is not provided in the specification. PCB layout verification is recommended before implementation.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are inductance (350µH), turns ratio (1CT:1CT), transformer type (LAN 1000 Base-T or LAN 10/100/1000 Base-T), and operating temperature range (0°C ~ 70°C minimum). All substitute parts must match these specifications.

Q: Is the H6062FNL suitable for direct replacement on existing PCBs?

A: The H6062FNL meets electrical requirements but has different physical dimensions (0.689" L x 0.600" W vs. 0.720" L x 0.480" W). PCB footprint and clearance verification is necessary before substitution.

Q: Are there compliance differences between the substitute parts?

A: All parts maintain ROHS compliance and REACH Unaffected status. The 749023015B specifies ROHS3, while the H6062FNL specifies RoHS Compliant. Both satisfy regulatory requirements for the application.

Q: Why is the 749023016 classified as Obsolete?

A: Obsolete status indicates the part is no longer manufactured by Würth Elektronik. The 749023015B and H6062FNL are active alternatives that provide equivalent functionality for new designs and legacy system support.

Q: What is the difference between LAN 1000 Base-T and LAN 10/100/1000 Base-T transformer types?

A: LAN 10/100/1000 Base-T transformers support backward compatibility with 10 Mbps and 100 Mbps Ethernet in addition to 1000 Mbps operation. Both types are suitable for 1000 Base-T applications.