ALAN-409

Overview

The ALAN-409 is a pulse transformer module designed for LAN applications, manufactured by Abracon LLC. It features a single channel configuration with a 1CT:1CT turns ratio and an inductance of 350uH. The component operates within a frequency range of 100 kHz to 100 MHz and supports surface mount (SMD/SMT) termination. Physical dimensions are 27.55 mm in length, 16.2 mm in width, and 7.35 mm in height. It functions reliably between -40°C and +85°C.

Feature Summary

• Integrated pulse transformer module for LAN signal integrity
• Surface mount construction for automated assembly
• Extended temperature operational capability

Applications

• Quad Port 10/100BASE-T LAN Transformer systems
• Auto MDI/MDIX circuit implementations
• Wired networking infrastructure components

Procurement Notes

Verify current availability status as the product lifecycle is listed as obsolete or discontinued by major distributors. Confirm specific ordering suffixes if tape-and-reel packaging is required instead of cut tape. Ensure compatibility with existing PCB footprints before procurement attempts due to potential supply chain limitations.

Selection Notes

Select this component for 10/100BASE-T applications requiring a 1CT:1CT ratio and 350uH inductance. Verify that the 8-pin chip package fits the design constraints. Consider the extended temperature range suitability for industrial environments. Check for alternative active parts if long-term supply is critical.

Part Context

Part of the ALAN series from Abracon, specifically engineered for Ethernet connectivity. It serves as a key passive component in network interface cards and switches. The series includes variations like ALAN-410 and ALAN-411 for different port configurations.

Replacement Considerations

Public confirmed substitute part numbers include ALAN-409-T. Verify pinout and electrical specifications match exactly when substituting.