{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MS-156C3(20)","brand":"Hirose Electric Co Ltd","brandSlug":"hirose-electric-co-ltd","productSlug":"MS-156C3~120~2","canonicalUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/MS-156C3~120~2","factsUrl":"https://icsourcedirect.com/api/mcp/products/MS-156C3(20)","rawCanonicalId":null},"summary":{"shortDescription":"Hirose MS-156C Series coaxial switch receptacle, MS-156C3(20), 50 Ohm, 11 GHz, 0.4 dB insertion loss, SMT, snap-on, gold body, 1 port, internal switch.","salesMarkdown":"## Coaxial Switch Receptacle for 11 GHz Signal Paths The Hirose MS-156C3(20) is a 50 Ohm coaxial switch receptacle from the MS-156C series, designed for RF signal routing up to 11 GHz. The internal switch feature lets the connector select between two signal routes without an external relay — useful in antenna diversity circuits, test equipment, and module-level RF switching. The gold body finish and gold-plated center contact (copper alloy) keep contact resistance low and resist corrosion over the rated 100 mating cycles. The SMT mounting and solder shield termination suit automated assembly on RF PCBs where controlled impedance is critical. ## What the 11 GHz and 0.4 dB Specs Mean for Your RF Design The 11 GHz max frequency and 0.4 dB insertion loss are the two specs that define this connector's signal-integrity envelope. At 11 GHz, the insertion loss of 0.4 dB means the signal loses less than 10% of its power through the switch — tight enough for most receiver front-ends and test paths. For a board layout engineer: the SMT footprint must match the recommended land pattern to keep the impedance discontinuity below the connector's own 0.4 dB budget. ## Mating and Termination — Snap-On, SMT, Solder Shield The fastening type is snap-on — the mating plug pushes onto the receptacle and locks with a detent, no threads or bayonet. The 100 mating cycles are enough for field-swappable modules and test fixtures but not for daily reconnect in a production test handler. The contact termination is also solder — the center pin solders to the PCB trace. The single-port design means one signal path in, one switched path out (or through). The internal switch is normally closed to one position and opens when the plug is inserted, routing the signal to the plug path.","metaTitle":"Hirose MS-156C3(20) Coaxial Switch Receptacle, 50 Ohm","metaDescription":"Hirose MS-156C3(20) coaxial switch receptacle, 50 Ohm impedance, 11 GHz max frequency, 0.4 dB insertion loss, SMT, snap-on fastening, gold body.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"Hirose Electric Co Ltd","Series":"MS-156C","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Internal Switch","Includes":"-","Impedance":"50Ohm","Body Finish":"Gold","Cable Group":"-","Body Material":"Phosphor Bronze","Housing Color":"Gold","Mating Cycles":"100","Mounting Type":"Surface Mount","Connector Type":"Receptacle, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.4dB","Product Status":"Active","Connector Style":"Coaxial Switch - 4mm Plug Dia","Frequency - Max":"11 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"MS-156C3","Contact Termination":"Solder","Dielectric Material":"Polyamide (PA), Nylon 6T","Operating Temperature":"-40°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Copper Alloy"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5500","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/MS-156C3(20)/alternatives.json"},"ai":{"faq":[{"question":"What is the insertion loss of MS-156C3(20)?","answer":"The insertion loss is 0.4 dB at the rated frequency range."},{"question":"Is MS-156C3(20) compatible with standard 50 ohm cable?","answer":"Yes, the connector is designed for 50 Ohm impedance systems, so it is compatible with standard 50 Ohm coaxial cable when mated with the correct 4 mm diameter plug."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/hirose-electric-co-ltd/MS-156C3~120~2","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-156C3~120~2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}