TE Connectivity 5557484-1 modular jack, 8P8C (RJ45, Ethernet), vertical orientation, shielded with EMI finger, through-hole solder termination, 50.0µin gold contact finish, board lock and panel stops, tray package.
| Parameter | Value |
|---|---|
| Mounting | Through Hole |
| Connector type | Jack |
| Operating temperature | -40°C ~ 85°C |
| LED color | Does Not Contain LED |
| Contact material | Phosphor Bronze |
| Housing material | Polyester |
| Package | Tray |
| Ratings | Cat3 |
| Features | Board Lock, Panel Stops |
| Shielding | Shielded, EMI Finger |
| Orientation | Vertical |
| Termination | Solder |
| Tab direction | User Selectable |
| Contact finish | Gold |
| Rows | 1 |
| Number of ports | 1 |
| Contact finish thickness | 50.0µin (1.27µm) |
| Number of positions (Contacts) | 8p8c (RJ45, Ethernet) |
It is shielded with an integrated EMI finger, which bleeds common-mode noise from the cable shield to the chassis ground before it reaches the signal pairs — a detail that matters in industrial or telecom enclosures where radiated emissions limits apply.
The board lock anchors the part during reflow or wave solder, and the panel stops set the insertion depth against the chassis cutout.
The 5557484-1 is a standard 8P8C (RJ45) modular jack rated Cat3. Cat3 is not rated for the higher current levels of Power over Ethernet (PoE) applications — PoE typically requires Cat5e or better magnetics and higher current-capable contacts. This jack is suited for 10BASE-T Ethernet and voice applications.