HX1344NL

Overview

The HX1344NL is a LAN discrete transformer module from Pulse Electronics, designed for 100Base-TX non-POE applications. It features a 350µH inductance with a .65Ω DC resistance and a 1CT:1CT turns ratio for both transmitter and receiver channels. The component supports four ports and operates within a frequency range of 1kHz to 100MHz. It provides 1.5kV isolation voltage and withstands peak reflow temperatures up to +245°C. Operating temperatures range from -40°C to +125°C, with physical dimensions of approximately 16.00mm length, 11.65mm width, and 5.72mm height.

Feature Summary

• Provides electrical circuit isolation meeting IEEE 802.3 standards while maintaining signal integrity for demanding applications.
• Optimized for compatibility with all major LAN transceivers in 10/100 Base-T networks.
• Features high thermal stability with a peak reflow temperature rating of +245°C.

Applications

• 100Base-TX Ethernet network interfaces
• LAN transceiver circuit isolation
• Non-POE (Power over Ethernet) data transmission systems

Procurement Notes

Verify the current lifecycle status before procurement, as this specific part number is listed as obsolete by multiple distributors. Confirm availability of alternative stock or qualified replacement components from authorized sources. Ensure that the selected substitute maintains identical pinout, inductance values, and isolation ratings to guarantee seamless integration into existing 100Base-TX designs without requiring schematic modifications.

Selection Notes

Select this component for applications requiring robust signal integrity and electrical isolation in 100Base-TX environments. The 350µH inductance and low DC resistance support efficient data transmission. Consider the surface mount package and operating temperature range when designing for industrial or commercial enclosures. Verify that the non-POE specification aligns with the power delivery requirements of the target network infrastructure.

Part Context

This component belongs to the HX series of LAN discrete transformer modules from Pulse Electronics. These modules are engineered to provide galvanic isolation between the PHY chip and the RJ45 connector. The series is characterized by compact surface-mount packaging and compliance with IEEE 802.3 standards, ensuring reliable performance in high-speed digital communication circuits.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the HX1344NL is marked obsolete, engineers must identify equivalent components based on matching electrical parameters such as 350µH inductance, 1CT:1CT ratio, and 4-port configuration.

FAQ

Is the HX1344NL compatible with Power over Ethernet (PoE)?

No, the HX1344NL is specifically designated for non-POE applications.

What is the maximum peak reflow temperature for this transformer?

The module is rated for a peak reflow temperature of +245°C.