H1664NL

Overview

The H1664NL is a LAN transformer module designed for 10/100 Base-T Ethernet applications. It features dual 1:1 turns ratios for both transmit and receive channels, supporting data rates up to 100 MHz. The component utilizes surface mount technology with dimensions of 28.19 mm length, 12.19 mm width, and a maximum seated height of 5.72 mm. It operates within a temperature range of 0°C to 70°C and includes insulation voltage capabilities compliant with IEEE standards.

Feature Summary

• Dual channel design supporting simultaneous transmit and receive operations
• Surface mount construction for automated assembly integration
• Compliance with IEEE standards for network signal integrity

Applications

• 10/100 Base-T Ethernet physical layer interfaces
• Network interface card (NIC) implementations
• Ethernet switch port circuits

Procurement Notes

Verify RoHS3 compliance status through official manufacturer documentation prior to procurement. Confirm humidity sensitivity handling requirements during storage and assembly processes. Ensure the specific package variant matches the required footprint dimensions for PCB layout compatibility. Cross-reference datasheet electrical characteristics against system isolation voltage requirements.

Selection Notes

Select this component for standard Gigabit or Fast Ethernet designs requiring dual-channel isolation. Evaluate thermal performance within the specified 0°C to 70°C operating range. Consider the surface mount profile for space-constrained layouts. Verify that the 1:1 turns ratio aligns with the transformerless PHY or coupled transformer architecture of the target network controller.

Part Context

This part belongs to the Pulse Electronics LAN transformer series, specifically engineered for high-speed digital communication interfaces. It serves as a critical passive component in Ethernet physical layers, providing galvanic isolation and impedance matching between the MAC/PHY and the external medium. The module integrates magnetic components into a single surface-mount package to reduce board space and assembly complexity.

Replacement Considerations

Consult official substitution lists for direct pin-compatible alternatives. Verify that any substitute maintains identical 1:1 turns ratios and IEEE compliance. Ensure replacement parts match the 28.19mm x 12.19mm footprint and 5.72mm height constraints.