HX1178NL

Overview

The HX1178NL is a single-port LAN transformer module designed for 10/100Base-T applications. It features surface mount termination and operates within a frequency range of 100 kHz to 100 MHz. The component provides an inductance of 350 uH and supports an insulation voltage of 1.5 kV. It functions reliably between -40°C and +85°C. Physical dimensions are 25.4 mm in length, 12.83 mm in width, and 6.22 mm in height. The module is unshielded and complies with RoHS standards.

Feature Summary

• Provides electrical circuit isolation meeting IEEE 802.3 standards for signal integrity
• Optimized for use with major LAN transceivers including Broadcom, Intel, and Micrel
• Supports peak reflow temperature ratings up to 245°C for surface mount assembly

Applications

• 10/100Base-T network interface circuits
• Single-port Ethernet data transmission systems
• LAN transceiver isolation interfaces

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as HX1178NLT utilize tape-and-reel packaging while the base model typically uses tube packaging. Confirm moisture sensitivity level requirements for storage and handling procedures prior to assembly. Ensure compatibility with the target transceiver manufacturer specifications regarding impedance and turns ratio alignment.

Selection Notes

Select this module for designs requiring a single-channel isolation solution for 10/100 Mbps Ethernet links. The component is suitable for applications demanding operation across extended industrial temperature ranges. Consider the physical footprint constraints given the specific length and width dimensions. Verify that the unshielded configuration meets the electromagnetic interference requirements of the final system design.

Part Context

This component belongs to Pulse Electronics' discrete LAN transformer module series. These modules are engineered to provide galvanic isolation between the PHY layer and the network medium. The product line emphasizes compatibility with various semiconductor transceivers while maintaining strict adherence to IEEE 802.3 specifications for data integrity and noise rejection.

Replacement Considerations

Publicly confirmed substitute part numbers include H1012NL, HX1148NL, PE-68515LNL, H1019NL, H1042NL, H1086NL, H1089NL, H1138NL, and PE-68515LNL.