HX2358NLS

Overview

The HX2358NLS is a single-port LAN discrete transformer module from Pulse Electronics, designed for 100Base-TX PoE+ applications. It features SMD/SMT termination and operates within a frequency range of 1 MHz to 125 MHz. The module provides 350 µH inductance with a maximum DC resistance of 750 mOhms and supports a power rating of 15 W. Electrical isolation is rated at 1.5 kV, ensuring compliance with IEEE 802.3 standards. It functions reliably between -40°C and +85°C. The component measures 12.7 mm x 9.09 mm x 5.99 mm and is available in Reel, Cut Tape, and MouseReel packaging formats.

Feature Summary

• Provides electrical circuit isolation meeting IEEE 802.3 standards while maintaining signal integrity for demanding applications.
• Optimized for major LAN transceivers with peak reflow temperature rating of +245°C.
• Supports Power over Ethernet Plus (PoE+) functionality for integrated power and data transmission.

Applications

• 100Base-TX Ethernet network interfaces
• PoE+ powered device implementations
• LAN transceiver circuit isolation

Procurement Notes

Verify the specific datasheet version for the HX2358NLS to confirm exact pinout configurations and mechanical tolerances before integration. Ensure that the selected packaging format aligns with your automated assembly equipment capabilities. Cross-reference the RoHS compliance status with current regulatory requirements for your target market. Confirm thermal management strategies are adequate for the specified operating temperature range and power dissipation levels during final design validation.

Selection Notes

Select this component when designing 100Base-TX systems requiring integrated PoE+ support and robust galvanic isolation. The 1.5 kV isolation voltage makes it suitable for environments requiring enhanced safety separation between network lines and internal circuitry. Consider the 125 MHz frequency range compatibility with standard Ethernet signaling rates. The unshielded design may require careful PCB layout to manage electromagnetic interference in dense layouts.

Part Context

This module belongs to the HX2326 series of LAN discrete transformers from Pulse Electronics. These components are engineered to replace traditional discrete transformer assemblies, reducing board space and simplifying manufacturing processes. The series is widely used in industrial and commercial networking equipment where reliability and signal integrity are critical for consistent data transmission performance.

Replacement Considerations

Publicly confirmed substitute part numbers for the HX2358NLS were not identified in the provided source material. Verify compatibility with alternative modules by comparing primary/secondary impedance, inductance values, and physical footprint dimensions against the original specification sheet.