LG2P109N LF

Overview

The LG2P109N LF is a dual-port LAN pulse transformer designed for Gigabit Ethernet (1000 Base-T) applications. It features a primary-to-secondary turns ratio of 1:1CT for both transmitter and receiver sections. The component provides an inductance of 350µH and utilizes a through-hole mounting configuration. Its physical dimensions are 32.50mm in length, 8.50mm in width, with a maximum seated height of 11.60mm. The device operates within a temperature range of 0°C to 70°C and complies with RoHS3 standards.

Feature Summary

• Dual-port architecture supporting simultaneous transmission and reception for 1000 Base-T networks
• Integrated magnetic design combining pulse transformers for signal coupling and isolation
• Through-hole construction suitable for standard PCB assembly processes

Applications

• Gigabit Ethernet network interface cards
• Ethernet switch port circuits
• Network adapter modules requiring 1000 Base-T compliance

Procurement Notes

Verify the specific suffix requirements against the target schematic, as variations such as LG2P109RN LF may exist within the product family. Confirm that the through-hole footprint matches the board layout constraints. Ensure the operating temperature range aligns with the environmental specifications of the final equipment. Check for RoHS3 compliance documentation if required by regional regulations. Validate availability status directly with the manufacturer or authorized distributors due to potential supply fluctuations.

Selection Notes

Select this component when a dual-port solution is required for Gigabit Ethernet PHY interfaces. The 350µH inductance value must match the impedance matching requirements of the connected transceiver. Consider the physical size constraints of the enclosure, as the DIP package occupies significant board area compared to surface-mount alternatives. Ensure the voltage ratings and isolation capabilities meet the safety standards of the application environment.

Part Context

This part belongs to Pulse Electronics' LAN magnetic components portfolio, specifically engineered for high-speed data communication. It serves as a critical interface between the Ethernet PHY chip and the external cabling system. The dual-port design simplifies circuit topology by integrating both transmit and receive paths into a single module, reducing component count and assembly complexity in network hardware designs.

Replacement Considerations

LG2P109RN LF is listed as a parameter-equivalent substitute from Pulse Electronics.