{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"221643-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"221643-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/221643-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/221643-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity SMA jack-to-jack adapter, 221643-1, 50 Ohm impedance, 18 GHz max frequency, straight body, panel mount bulkhead, stainless steel, gold-plated beryllium copper center contacts, 500 mating cycles, includes lockwasher and nut.","salesMarkdown":"## SMA Jack-to-Jack Bulkhead Adapter, 18 GHz The TE Connectivity 221643-1 is a same-series SMA jack-to-jack adapter, built for panel-mount bulkhead applications where you need to extend or reconfigure an SMA signal path without changing gender. The straight body keeps the RF launch axis aligned with the panel plane. The adapter uses a stainless steel body for corrosion resistance in panel-mount environments, with gold-plated beryllium copper center contacts on both the female-to-female interface. The dielectric is PTFE, which gives stable dielectric constant across temperature. The lockwasher prevents the nut from backing off under vibration, which is the common failure mode on a panel-mount adapter that sees cable torque. ## What the 18 GHz Rating Means for the Signal Path The 18 GHz max frequency is the upper limit where the adapter's VSWR and insertion loss stay within the SMA interface's typical specification window. Below that frequency, the 50 Ohm impedance match through the PTFE dielectric and gold-plated beryllium copper contacts is stable.","metaTitle":"TE 221643-1 SMA Jack to Jack Adapter, 18 GHz, 50 Ohm","metaDescription":"TE Connectivity 221643-1 SMA jack-to-jack adapter, 50 Ohm, 18 GHz max, stainless steel body, panel mount bulkhead. Obsolete — sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"Straight","Series":"-","Package":"Bulk","Features":"-","Includes":"3 pcs - 1 Connector, 1 Lockwasher, 1 Nut","Impedance":"50Ohm","Body Finish":"-","Adapter Type":"Jack to Jack","Body Material":"Stainless Steel","Center Gender":"Female to Female","Mating Cycles":"500","Mounting Type":"Panel Mount","Adapter Series":"SMA to SMA","Fastening Type":"Threaded, Threaded","Insertion Loss":"-","Product Status":"Obsolete","Conversion Type":"Same Series","Frequency - Max":"18 GHz","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead","Ingress Protection":"-","Base Product Number":"221643","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper","Convert To (Adapter End)":"SMA Jack, Female Socket","Convert From (Adapter End)":"SMA Jack, Female Socket"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$23.8000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/93395fe64485beb72556a6a2be9bb710.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the specifications of the 221643-1 SMA adapter?","answer":"The 221643-1 is a straight SMA jack-to-jack adapter, 50 Ohm impedance, rated to 18 GHz max frequency. It is a panel mount bulkhead adapter and includes the connector, lockwasher, and nut."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/221643-1","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/te-connectivity-amp-connectors/221643-1 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}}