H1664FNL

Overview

The H1664FNL is a LAN 10/100 Base-T pulse transformer manufactured by Pulse Electronics. It features a surface mount design with a 1CT:1CT transmitter and 1CT:1CT receiver configuration. The component provides an inductance of 350µH and supports a minimum isolation voltage of 1500Vrms. It operates within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated transmission and reception functionality for Ethernet applications
• Surface mount construction for automated assembly
• High potential isolation capability

Applications

• LAN 10/100 Base-T network interface circuits
• Ethernet signal coupling modules
• Telecommunications equipment requiring galvanic isolation

Procurement Notes

Verify the specific datasheet version and qualification data availability, as historical Product Change Notifications indicate revisions to header designs and part numbering schemes. Confirm that the current supply matches the required pin configuration and package dimensions to ensure compatibility with existing board layouts and internal assembly requirements.

Selection Notes

Select this component for applications requiring a compact solution for 10/100 Mbps Ethernet connectivity. Ensure the operating environment remains within the specified 0°C to +70°C range. Consider the surface mount footprint and height constraints during PCB layout to guarantee proper mechanical fit and thermal performance.

Part Context

This component belongs to the Pulse Electronics family of audio and signal transformers designed for high-speed data transmission. It serves as a critical passive element in Ethernet PHY interfaces, providing impedance matching and signal integrity maintenance while isolating the transceiver from the external network medium.