S558-5999-U7-F – BELFUSE
MODULE XFRMR LAN 10/100B-TX SMD
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The BELFUSE S558-5999-U7-F is a surface-mount, low-profile LAN transformer module designed for 10/100Base-TX Ethernet applications. This module provides electrical isolation and common mode noise reduction necessary for compliance with IEEE 802.3 standards. The S558-5999-U7-F integrates transmit and receive channels within a single package, minimizing board space requirements. Specific electrical characteristics include an inductance value optimized for 100Base-TX signaling, a turns ratio configured for appropriate impedance matching between the PHY and the Ethernet cable, and a defined isolation voltage rating, typically 1500Vrms or higher, to ensure network safety and signal integrity. The operating temperature range is generally specified to meet industrial requirements. The SMD package facilitates automated assembly processes and contributes to overall system reliability.