6p6c RJ Jack with Heavy Gold for Repeated Mating
The TE Connectivity 5520250-3 is a 6p6c (6 position, 6 conductor) modular jack — the standard footprint for RJ11, RJ12, RJ14, and RJ25 connectors. It is a right-angle, through-hole part, unshielded, with a Cat3 rating that limits its signal path to 16 MHz. That makes it a fit for POTS telephone lines, ISDN terminals, and 10BASE-T Ethernet, but not for 100BASE-TX or faster data links.
Board Lock and Panel Stops Simplify Assembly
Two mechanical features on this jack reduce assembly risk. The panel stops set a consistent insertion depth when the jack is mounted through a panel cutout — no need to eyeball the seating depth. Together they mean the jack lands square on the board and sits at the correct height relative to the panel face every time.
Cat3 Rating Sets the Bandwidth Ceiling
The Cat3 performance rating (16 MHz) is the hard limit on this jack's signal bandwidth. It is adequate for analog voice and 10BASE-T, but if the BOM calls for 100BASE-TX or Power over Ethernet, this is not the right part — a Cat5e or Cat6 jack would be needed. The unshielded construction (no metal shell) also means it relies on the system's overall EMI strategy rather than providing its own ground plane.