RF Coaxial Switch for Dense PCB Layouts
The Hirose MS-180(20) is a surface-mount coaxial switch receptacle from the MS-180 series, designed as a 50 Ohm RF interconnect with an internal switch feature. It uses a 2.24mm plug diameter interface and a snap-on fastening style, making it suited for board-level signal routing where space is tight and a clean RF path is needed up to 11 GHz. The gold-plated brass body and gold center contact plating handle repeated matings without corrosion concerns in controlled environments.
What the RF Specs Mean for Your Signal Path
The 11 GHz max frequency covers common wireless bands including Wi-Fi 6E and 5G sub-6 GHz, with headroom for higher-frequency harmonics. Insertion loss is rated at 0.3dB through the switch path, which is low enough that it won't eat into your link budget on short board-to-board runs. The internal switch lets you route the RF signal without an external relay, saving board area and part count.
Mating Cycles and Mechanical Life
The snap-on fastening gives a positive tactile lock when mated, and the gold-on-gold contact interface keeps resistance stable across those cycles. If you need a higher cycle count, the MS-162B sibling in the same family is rated for 12000 cycles but uses a larger 4mm plug diameter.