SFP+ Cage for Board-Edge Optical Modules
The TE Connectivity 2057021-1 is an SFP+ cage, the metal enclosure that houses an SFP+ transceiver module on the PCB. The cage is EMI shielded, which keeps radiated noise from the high-speed serial lanes inside the chassis and prevents external interference from coupling into the signal path. Solder termination secures the cage ground pins to the board, completing the shield bond.
Mounting and Board Layout Fit
The board footprint must match the cage's pinout and keep-out zone; the base product number 2057021 ties to the TE mechanical drawing that defines the hole pattern and board cutout. Tray packaging delivers the cages in a rigid carrier for pick-and-place or hand assembly.