{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1408349-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1408349-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1408349-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/1408349-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity QMA jack, female socket, 50 Ohm, 6 GHz, RG-402 semi-rigid cable, solder termination, bulkhead front-side nut, gold body, 100 mating cycles, 0.25 dB insertion loss, 335 V.","salesMarkdown":"## QMA Snap-On Bulkhead Jack for RG-402 Semi-Rigid The QMA interface is the quick-connect snap-on variant of the SMA — same 50 Ohm impedance and 6 GHz frequency ceiling, but the snap-on coupling replaces the threaded nut for faster mating in dense panel layouts where a torque wrench is awkward. The kit ships as four pieces: the connector body, one contact, one lockwasher, and one nut, so you get the full bulkhead mount hardware in one bag. ## RF Performance and Mechanical Limits Rated at 50 Ohms nominal impedance with a maximum operating frequency of 6 GHz and an insertion loss of 0.25 dB — the loss figure tells you this is a low-insertion interface suited for the upper end of the cellular and ISM bands where every tenth of a dB counts. The voltage rating is 335 V, and the snap-on fastening type is rated for 100 mating cycles; that cycle count is typical for a QMA and reflects the trade-off: faster mate/demate than an SMA, but the snap-on collet wears sooner than a threaded nut. This jack is built specifically for RG-402 (.141\" semi-rigid) cable — the cable group is listed in the spec, so the centre conductor and dielectric dimensions are matched to the contact and body bore.","metaTitle":"TE Connectivity 1408349-1 QMA Jack, 50 Ohm, 6 GHz, Bulkhead","metaDescription":"TE Connectivity 1408349-1 QMA jack, female socket, 50 Ohm, 6 GHz max, 0.25 dB insertion loss, 335 V, 100 mating cycles. RG-402 semi-rigid cable.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Series":"-","Package":"Bulk","Features":"-","Includes":"4 pcs - 1 Connector, 1 Contact, 1 Lockwasher, 1 Nut","Impedance":"50 Ohms","Body Finish":"Gold","Cable Group":"RG-402 (.141\\\" Semi Rigid)","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"100","Mounting Type":"Panel Mount","Connector Type":"Jack, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.25dB","Product Status":"Active","Voltage Rating":"335 V","Connector Style":"QMA","Frequency - Max":"6 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"Bulkhead - Front Side Nut","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"1408349","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C ~ 80°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.4800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What cable fits the 1408349-1 connector?","answer":"The 1408349-1 is designed for RG-402 (.141\" semi-rigid) cable. The centre conductor and dielectric dimensions of that cable match the contact and body bore of this jack."},{"question":"What is the impedance of 1408349-1?","answer":"The 1408349-1 is a 50 Ohm nominal impedance connector, rated to 6 GHz maximum frequency with an insertion loss of 0.25 dB."},{"question":"What is the insertion loss of 1408349-1?","answer":"The listed insertion loss is 0.25 dB, measured at the rated frequency range up to 6 GHz."},{"question":"How many mating cycles is 1408349-1 rated for?","answer":"The QMA snap-on interface is rated for 100 mating cycles. This is typical for a quick-connect RF connector — the snap-on collet wears sooner than a threaded SMA nut."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1408349-1","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/1408349-1 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}}