RJ45 Jack for Legacy 10/100BASE-T Networks
The TE Connectivity 555764-1 is an 8p8c (RJ45, Ethernet) jack — the 8-position, 8-contact modular interface standard for twisted-pair copper cabling. It is rated Cat3, which limits it to 10/100BASE-T Ethernet applications — not suitable for Gigabit or Category 5e/6 networks.
SMT Retention and Assembly Fit
The tab direction is down, meaning the latch on the mating RJ45 plug engages on the underside of the jack — confirm this matches your enclosure cutout orientation.
Obsolete — Sourcing Path
The 555764-1 is listed as Obsolete. If your design can accept a parametric alternative, a current-production Cat5e or Cat6 RJ45 jack from TE Connectivity's modular jack portfolio would be the practical route, but no direct pin-compatible drop-in is documented in this record.
