H1174NLT Equivalent & Substitute Parts

Part Overview

The H1174NLT is an isolation and data interface transformer module manufactured by Pulse Electronics, designed for 10/100 Mbps Ethernet applications. This component features a 1:1 turns ratio configuration with separate transmitter and receiver windings in a surface mount package. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

H1174NLT

Pulse ElectronicsIn Stock: 759H1174NLT Datasheet

Current PartRFQ

H1174FNLT

Pulse ElectronicsIn Stock: 1491H1174FNLT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The H1174FNLT qualifies as a direct substitute for the H1174NLT based on the following critical parameters:

Matching Electrical Specifications:

• Identical turns ratio configuration: 1:1 Transmitter and 1:1 Receiver
• Same transformer type classification: LAN 10/100 Base-T isolation transformer
• Identical operating temperature range: 0°C ~ 70°C
• Matching RoHS compliance and MSL rating

Matching Mechanical Specifications:

• Surface mount packaging on both components
• Compatible footprint dimensions within acceptable tolerance
• Similar height profile suitable for standard PCB assembly

Compliance Alignment:

• Both parts maintain RoHS Compliant status
• Identical REACH Unaffected classification
• Same ECCN and HTSUS codes

The H1174FNLT represents an active product with enhanced availability, making it the appropriate substitute for the obsolete H1174NLT in new designs and legacy system support.

Parameter Comparison

Engineering Selection Recommendations

The H1174FNLT is the qualified substitute for H1174NLT applications. Selection is based on:

Product Status: The H1174NLT is obsolete with limited remaining inventory. The H1174FNLT maintains active product status with established supply chain availability.

Electrical Compatibility: Both components maintain identical 1:1 turns ratio configurations and operating temperature specifications required for 10/100 Mbps Ethernet isolation transformer applications.

Compliance Certification: Both parts satisfy RoHS Compliant requirements and maintain identical REACH Unaffected status, ensuring regulatory alignment for current manufacturing standards.

Mechanical Fit: Surface mount packaging and similar height profiles support direct PCB layout compatibility. Minor dimensional variations in length and width remain within standard PCB design tolerances for transformer module placement.

Packaging Consideration: The H1174FNLT is supplied in Tape & Reel format, standard for high-volume production environments and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the H1174FNLT directly replace the H1174NLT on existing PCBs?

A: The H1174FNLT is mechanically and electrically compatible with the H1174NLT. Both components feature surface mount packaging with similar footprint dimensions and identical electrical specifications. PCB layout verification is recommended to confirm dimensional clearances, particularly regarding the minor width variation (0.500" vs 0.574").

Q: What is the primary reason for substitution?

A: The H1174NLT is classified as obsolete. The H1174FNLT provides equivalent electrical performance with active product status and established supply availability.

Q: Are there compliance differences between these parts?

A: Both the H1174NLT and H1174FNLT maintain identical RoHS Compliant and REACH Unaffected certifications. No compliance trade-offs exist between these components.

Q: What packaging formats are available for the H1174FNLT?

A: The H1174FNLT is supplied in Tape & Reel (TR) packaging, suitable for automated pick-and-place assembly operations.

Q: Do these transformers support the same data rates?

A: Both components are specified for 10/100 Mbps Ethernet applications with identical 1:1 turns ratio configurations and operating temperature ranges.