Shielded RJ45 Jack with Integrated Status LED
The TE Connectivity 1-1909119-4 is a right-angle, shielded modular jack with an integrated green-yellow bicolor LED, terminated through-hole with solder. It carries 8 positions and 8 contacts (8P8c, RJ45 Ethernet) in a single port, with a board lock for secure PCB retention during assembly and service. The Cat3 rating means this jack is specified for 10BASE-T Ethernet and voice applications up to 16 MHz — not Gigabit or PoE+ — so match it to the data rate your BOM requires.
Cat3 vs. Higher-Rated Jacks — What the Rating Means for Your Build
The Cat3 rating defines the jack's transmission performance: it is verified for frequencies up to 16 MHz, which covers 10BASE-T Ethernet and analog telephony. A Cat5e or Cat6 jack would handle 100 MHz or 250 MHz respectively for 100BASE-TX / Gigabit. If your BOM calls for 100 Mb/s or faster, this jack is not the fit — you need a Cat5e-rated part. For basic 10 Mb/s Ethernet or POTS lines, the Cat3 rating is correct and cost-effective.
Shielding and Mounting — Board-Level Fit
The shielded shell bleeds common-mode noise to the chassis ground through the through-hole solder tabs — critical for passing radiated emissions in an enclosure.