The 908-22100: The snap-on fastening gives quick, tool-less mating for board-level interconnects where the cable assembly needs to be swapped in the field or during test. The SMT termination with a board-edge cutout mounting style means the connector sits at the PCB perimeter, letting the coaxial cable exit cleanly without bending over the board surface.
Rated for 50 Ohm characteristic impedance and a maximum frequency of 6 GHz, this jack covers the common wireless bands including Wi-Fi, Bluetooth, and cellular up to mid-band 5G. The gold-over-beryllium copper centre contact maintains consistent contact force through the 500-cycle mating life, so the VSWR doesn't drift after repeated connects.
Mounting and Board Layout
The board-edge cutout mounting type places the connector body flush with the PCB outline, which saves board real estate and keeps the RF launch clean. The SMT shield termination reflows alongside other surface-mount components, eliminating a separate soldering step.
How 908-22100 Compares to 908-22101
The closest functional sibling is the 908-22101, which shares the same MMCX interface, 50 Ohm impedance, 6 GHz ceiling, and 500-cycle rating. The difference is the dielectric material: the 908-22100 uses PTFE, while the 908-22101 uses Liquid Crystal Polymer (LCP). PTFE offers a lower and more stable dielectric constant over temperature, which makes the 908-22100 the better choice for phase-critical or wide-temperature-range RF paths. The 908-22101 also has a black housing versus gold, but that is cosmetic — the functional swap decision rides on the dielectric requirement.