The TE Connectivity 2-2170808-4 is a QSFP28 cage, ganged as a 1 x 2 configuration with an integrated heat sink. This is the mechanical enclosure that receives a QSFP28 transceiver module — the cage provides the card-edge connector interface, EMI containment, and thermal management for the module. The press-fit termination eliminates solder, which suits high-reliability backplane assemblies where rework and thermal stress on the PCB are concerns. Right-angle orientation places the cage parallel to the board edge, aligning the module's faceplate with the enclosure's I/O panel. The integrated heat sink draws heat from the transceiver without requiring a separate thermal pad or clip assembly, saving board space and assembly steps.
EMI Shielding and Light Pipe — Built-In, Not Added Later
The metal cage structure provides EMI shielding around the transceiver. The light pipe is integrated into the cage assembly.
Mounting and Termination — Press-Fit Through-Hole
The press-fit termination uses compliant pins that cold-work into the plated through-hole, creating a gas-tight joint without solder.