What the 2227303-3 Is and Where It Goes
The TE Connectivity 2227303-3 is an SFP cage — the metal enclosure that houses a pluggable SFP transceiver module on a PCB, not the module itself. The integral EMI shielding is the main event here: the cage forms a continuous ground path around the module, keeping radiated emissions from the high-speed serial lines inside the enclosure. This is the part you spec when the layout calls for a single-port SFP cage in a tray-friendly package for pick-and-place or hand assembly.
Mounting and Termination Fit
The through-hole, right-angle solder termination means the cage pins go into plated through-holes and are wave-soldered from the bottom side. Board layout needs the keep-out zone for the cage body and the clearance for the module latch — the datasheet drawing gives the exact footprint. The Tray packaging is standard for hand-load or tube-fed assembly; if your line prefers Box packaging, the sibling 2227302-3 is the same cage in a Box format.