The TE Connectivity 2301997-2 is a dual-port RJ45 jack designed for 10/100 Base-T Ethernet with AutoMDIX support. It sits in a shielded, right-angle through-hole package with board locks and EMI fingers, built for industrial-temperature environments spanning -40°C to 85°C. Each port carries 4 cores, meaning it handles 10/100 Base-T signaling but not 1000 Base-T, which requires all 8 conductors.
Through-hole termination gives a robust mechanical bond to the board, preferred over SMT for connectors that see cable strain.
Shielding and EMI Performance
The brass shield with integrated EMI fingers provides a low-impedance path to chassis ground, containing radiated emissions from the Ethernet PHY and preventing external noise from coupling into the signal pairs. This is standard practice for equipment requiring FCC or EN55022 Class B compliance. The EMI fingers contact the mating plug's shell before the signal pins engage, bleeding off electrostatic discharge before it reaches the PHY.