Coaxial Switch Receptacle for RF Signal Routing
The Hirose MS-156HF is a surface-mount coaxial switch receptacle from the MS-156HF series, designed for RF signal routing in compact wireless modules and test interfaces. It integrates an internal switch function that allows the signal path to be rerouted when a mating plug is inserted — a common requirement for antenna-switching or transmit/receive path selection in portable devices. The connector is a single-port, female socket with a snap-on fastening type, accepting a 4 mm diameter plug.
RF Performance and Signal Integrity
With a maximum frequency of 6 GHz and an insertion loss of 0.15 dB, the MS-156HF introduces minimal signal attenuation in the passband. The dielectric material is polyamide (PA) Nylon 6T, which provides stable dielectric properties across the temperature range.
The snap-on fastening provides a quick, tool-less mate with the matching 4 mm plug. The 100 mating cycle rating is typical for internal board-level RF connectors where the connection is made once during assembly and rarely cycled in the field.
The base product number is MS-156, and the series includes packaging variants such as MS-156HF(20) (Tape & Reel) and MS-156HF(01) (strip) — the (20) suffix denotes Tape & Reel packaging, the (01) suffix denotes strip packaging. These are functionally identical in RF performance and differ only in packaging format.