6-Port Shielded RJ45 Jack for Industrial Ethernet
The TE Connectivity 5557572-3 is a 6-port ganged modular jack, 8P8C (RJ45) configuration, in a shielded right-angle through-hole package. This is the connector you spec when a single board-edge component needs to terminate six Ethernet drops — it consolidates what would otherwise be six discrete jacks into one pick-and-place item, saving board real estate and reducing per-port placement cost. The shield is integral, not an add-on can, so the EMI containment path is built into the housing from the start.
Tin-plated jacks would fret after a few cycles; this one holds its contact resistance through the life of the equipment.
Board Guide and Solder Joint Protection
The board guide feature is a molded alignment post on the bottom of the housing. It locates the jack precisely during wave solder and, more importantly, takes the mechanical shear load when an RJ45 plug is inserted or yanked out. Without it, the through-hole solder joints carry all the insertion force — the board guide shunts that force into the PCB, not the solder fillets.
Temperature Range and Environmental Fit
The PCT housing handles the thermal cycling without cracking or wicking moisture into the contacts. The 85°C upper limit is the component temp, not just ambient, so derate if the jack sits next to a hot power supply or heatsink.
Shielding and EMI Performance
Shielded construction means the jack has a metal shell that grounds through the through-hole solder tails to the PCB ground plane. In industrial Ethernet runs where motor drives or switching supplies radiate common-mode noise, the shield bleeds that energy before it couples into the differential signal pairs. No shield means the cable braid stops at the plug — the jack itself becomes the noise entry point.