H5019FNLT

Overview

The H5019FNLT is a LAN pulse transformer manufactured by Pulse Electronics, designed for 10/100/1000 Base-T applications. It features an inductance of 350µH with a turns ratio of 1CT:1 for both the transmitter and receiver channels. The component utilizes a surface mount installation type and operates within a temperature range of 0°C to 70°C. Its physical dimensions are 0.780 inches in length, 0.750 inches in width, and a maximum height of 0.100 inches (2.54mm). The device is RoHS compliant and classified as active.

Feature Summary

• Supports Gigabit Ethernet data transmission standards including 10/100/1000 Base-T protocols.
• Provides galvanic isolation between network lines via dedicated transmitter and receiver windings.
• Optimized for high-frequency signal integrity in compact surface-mount layouts.

Applications

• Gigabit Ethernet network interface cards
• Computer motherboard LAN ports
• Network switch internal circuitry

Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging configuration distinct from tube variants. Confirm current market status as the component may be subject to discontinuation notices or product change notifications affecting availability. Ensure compatibility with existing board footprints regarding the specified 19.81mm x 19.05mm outline.

Selection Notes

Select this component when a single-channel LAN transformer with 350µH primary inductance is required for 10/100/1000 Base-T systems. Consider the 0-70°C operating range against environmental requirements. Compare physical height constraints of 2.54mm against assembly clearance limits. Validate that the 1CT:1 winding configuration matches the PHY chip specifications.

Part Context

This part belongs to the H-series of LAN transformers from Pulse Electronics, engineered for standard Ethernet connectivity. It serves as a critical passive element in network interfaces, ensuring signal coupling while maintaining electrical isolation. The design supports modern networking speeds up to 1 Gbps within a standardized surface-mount footprint compatible with automated assembly processes.

Replacement Considerations

HX5019FNLT is a direct equivalent variant sharing identical electrical parameters and form factor. H5014FNL offers similar functionality but differs in package dimensions and thermal characteristics. Verify pinout compatibility before substituting with alternative series components.