Right-Angle 6P6C Jack with Board Lock
It accepts standard RJ11, RJ12, RJ14, and RJ25 plugs — the 6p6c format covers single and dual telephone lines plus 10/100BASE-T Ethernet. The jack is unshielded and rated Cat3, so it is suited for voice and low-speed data applications where the signal path does not require the higher bandwidth or crosstalk isolation of a Cat5e or Cat6 jack. Gold-plated phosphor bronze contacts resist corrosion over repeated mating cycles.
Tab-Down Keying and Pinout
The tab direction is specified as Down, meaning the latch on the mating plug faces the PCB when inserted. This is the standard keying for most modular jacks mounted on a horizontal PCB — the plug clips in from above and the latch hooks under the jack body. The pinout follows the 6p6c convention: positions 3 and 4 are the centre pair (tip and ring for a single phone line), with the outer pairs available for a second line or data. The 1-row contact arrangement keeps the footprint narrow, which helps when routing traces between the solder tails on a dense board.
The Cat3 rating limits this jack to a maximum frequency of 16 MHz. That is enough for analog telephony, ISDN, and 10BASE-T Ethernet, but it will not pass the 100 MHz bandwidth required for 100BASE-TX or the 250 MHz for Gigabit Ethernet. For a voice-only or low-speed data line, the unshielded construction keeps cost and assembly simple.