{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MS-166","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"MS-166","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/MS-166","factsUrl":"https://icsourcedirect.com/api/mcp/products/MS-166","rawCanonicalId":null},"summary":{"shortDescription":"Hirose MS-166 coaxial switch receptacle, female socket, 50 Ohm, 11 GHz max, SMT, gold-plated phosphor bronze body, Tape & Reel.","salesMarkdown":"## Coaxial Switch Receptacle — 2.80 mm Plug Diameter The Hirose MS-166 is a coaxial switch receptacle with a 2.80 mm plug diameter, designed as a female socket for surface-mount RF applications. It sits in the MS-166 series and carries an internal switch feature — the switching function allows signal routing or test-point isolation without an external relay. ## 50 Mating Cycles — Built for Low-Reconnect Duty Rated for 50 mating cycles, this connector is intended for applications where the connection is made a limited number of times — think internal antenna switching, test-point access, or factory calibration ports. The gold-on-gold contact interface (centre contact and body finish both gold) keeps contact resistance stable over those cycles, but the 50-cycle ceiling means it is not suited for frequent field reconnection. The snap-on fastening type reinforces this: quick to mate, not designed for repeated unmate-remate cycles in service. ## SMT Termination and Reel Packaging Both the shield and centre contact terminate by solder — surface-mount pads on the PCB, no through-hole posts. The Tape & Reel packaging confirms this part was designed for automated pick-and-place lines. ## Obsolete — Sourcing via Independent Distribution The MS-166 is marked obsolete by Hirose. If the BOM can accept a substitute, a parametric search for a 50 Ohm SMT coaxial switch receptacle with a 2.80 mm plug interface and internal switching is the next step; no pin-compatible drop-in is documented.","metaTitle":"Hirose MS-166 Coaxial Switch Receptacle, 50 Ohm, 11 GHz","metaDescription":"Hirose MS-166 coaxial switch receptacle, 50 Ohm impedance, 11 GHz max, SMT, gold body. Obsolete — sourced to order against RFQ via independent distribution.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Series":"MS-166","Package":"Tape & Reel (TR)","Features":"Internal Switch","Includes":"-","Impedance":"50 Ohms","Body Finish":"Gold","Cable Group":"-","Body Material":"Phosphor Bronze","Housing Color":"Gold","Mating Cycles":"50","Mounting Type":"Surface Mount","Connector Type":"Receptacle, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.4dB","Product Status":"Obsolete","Connector Style":"Coaxial Switch - 2.80mm Plug Dia","Frequency - Max":"11 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"-","Contact Termination":"Solder","Dielectric Material":"Liquid Crystal Polymer (LCP)","Operating Temperature":"-40°C ~ 85°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/e4d73a24503b9cf9c7a96d570eb91194.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the MS-166 obsolete?","answer":"Yes, the Hirose MS-166 is marked obsolete. There is no official replacement or cross-reference from Hirose."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/MS-166","citationPolicyUrl":"https://icsourcedirect.com/llms.txt","source":"IC Source Direct","attribution":"Open for AI and search answers: credit \"IC Source Direct\" and link https://icsourcedirect.com/hirose-electric-co-ltd/MS-166 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:25.888Z","lastPublished":"2026-07-20T14:34:25.888Z","indexable":true}}