The TE Connectivity 2301995-2 is a single-port shielded RJ45 jack built for 10/100 Base-T Ethernet with AutoMDIX support — the kind of jack you spec when the PHY needs automatic crossover detection and the board layout calls for a vertical through-hole mount. It carries 4 cores per jack, meaning it terminates the four signal pairs of a standard 10/100 Base-T cable (pins 1-2-3-6 active, 4-5-7-8 unused or PoE). The 30.0µin gold contact finish is a heavy-duty plating that handles the mating cycles of a field-serviceable port without fretting corrosion — not a thin-flash consumer jack.
The 10/100 Base-T and AutoMDIX application rating is the headline spec here — it tells you the internal magnetics and signal routing are tuned for 100 Mbps Ethernet with automatic MDI/MDI-X crossover. That means you can plug a straight-through or crossover cable into this port and the PHY sorts out the pair swap internally. No need for a crossover cable or manual switch. The vertical orientation and 0.665" (16.90 mm) height above board are the dimensions that matter for enclosure fit. A vertical jack stands upright off the PCB, so the mating RJ45 plug enters parallel to the board — common for panel-mount applications where the jack protrudes through a cutout. The 16.90 mm height tells you how much clearance you need above the board surface to the inside of the enclosure lid.
Through-hole solder termination with a vertical orientation. The tab direction is up, and the single-row, single-port layout keeps the footprint compact. The Cut Tape option is useful for prototyping or low-volume builds where you don't want to commit to a full reel. The ROHS3 compliance means no restricted substances in the solder plating or housing material — clean for EU and California regulatory markets.