QSFP28 Cage — Press-Fit, EMI Shielded, Right-Angle Mount
The TE Connectivity 2170703-4 is a QSFP28 cage assembly designed for high-speed 100 Gbps (4x25 Gbps) optical and copper interconnect applications. The press-fit termination eliminates the need for soldering, making it suitable for backplane and mid-board mounting where rework or high-reliability solderless assembly is preferred. The integrated EMI shielding is essential for maintaining signal integrity at 25+ Gbps per lane, containing radiated emissions within the chassis. Right-angle through-hole mounting places the cage parallel to the PCB edge, suiting it for faceplate or I/O panel layouts where the module inserts from outside the enclosure.
Mounting and Termination Notes
The press-fit tail design requires a plated through-hole diameter matched to the manufacturer's recommended PCB footprint — the interference fit holds the cage in place without solder fillets.