H1102NLT

The H1102NLT from Pulse Electronics (now Yageo) is a single-port 10/100Base-TX Ethernet magnetic module integrating the RJ-45 connector, isolation transformer, and common-mode choke in a single package. The center-tapped transformer provides galvanic isolation (1500Vrms) and impedance matching between the Ethernet PHY transceiver and Cat5 cable. The integrated common-mode choke suppresses EMI for EMC compliance. LED pins are provided for link and activity indication. The module pairs directly with RTL8201F and similar PHY transceivers.

The H1102NLT integrates an isolation transformer, common-mode choke, and RJ-45 connector. The isolation transformer provides galvanic isolation between the PHY and cable, protecting against voltage surges and ground loops. The center tap connects to the PHY center-tap pins via capacitors for DC biasing. The common-mode choke suppresses common-mode noise on TX/RX pairs, reducing radiated EMI. The RJ-45 connector provides the physical Cat5 cable interface.

• Embedded MCU Ethernet (STM32 + RTL8201F + H1102NLT)
• Industrial PLC and HMI Ethernet interface
• Set-top box and smart TV LAN port
• Network printer Ethernet connectivity
• Home router 10/100 LAN port