{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"919-109J-51PX","brand":"Amphenol","brandSlug":"amphenol","productSlug":"919-109J-51PX","canonicalUrl":"https://icsourcedirect.com/amphenol/919-109J-51PX","factsUrl":"https://icsourcedirect.com/api/mcp/products/919-109J-51PX","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol MCX receptacle, female socket, 50 Ohm, 6 GHz, 0.1 dB insertion loss, through-hole solder, snap-on, gold body, 1 port, bulk.","salesMarkdown":"## MCX Receptacle, 50 Ohm, 6 GHz — Interface and Fit The Amphenol 919-109J-51PX is a 50 Ohm MCX receptacle with a female socket contact, designed for through-hole solder termination to a PCB. The 0.1 dB insertion loss at 6 GHz is low for a snap-on connector, indicating the PTFE dielectric and beryllium copper centre contact hold a clean 50 Ohm match across the band. ## Ratings That Govern the RF Path The 6 GHz maximum frequency is the practical ceiling; above that the snap-on interface geometry and the PTFE dielectric's loss tangent begin to degrade return loss. The 500 mating cycles are standard for a gold-plated RF connector — the snap-on coupling wears faster than a threaded SMA, but 500 cycles covers test-board and field-service life without contact fretting. The dielectric is PTFE — the standard RF-grade material that holds the impedance tolerance through temperature and humidity. Shield and centre contact both terminate by solder — through-hole on the shield legs, solder cup on the centre pin. The snap-on fastening locks with a positive detent; no coupling nut torque to verify.","metaTitle":"Amphenol 919-109J-51PX MCX Receptacle, 50 Ohm, 6 GHz","metaDescription":"Amphenol 919-109J-51PX MCX receptacle, female socket, 50 Ohm impedance, 6 GHz max frequency, 0.1 dB insertion loss, 500 mating cycles, gold body, through-hole","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors","RF Cable Assemblies"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Bulk","Features":"-","Includes":"-","Impedance":"50Ohm","Body Finish":"Gold","Cable Group":"-","Body Material":"Brass","Housing Color":"Gold","Mating Cycles":"500","Mounting Type":"Through Hole","Connector Type":"Receptacle, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.1dB","Product Status":"Active","Connector Style":"MCX","Frequency - Max":"6 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"91910","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-65°C~165°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.6000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/9fc6e3b9b0c0ced451d33a6b62b342eb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 919-109J-51PX available via RFQ confirmation?","answer":"The 919-109J-51PX is available to order through independent distribution."},{"question":"What is the impedance of 919-109J-51PX?","answer":"The impedance is 50 Ohm — the standard for RF signal paths. This connector matches 50 Ohm characteristic impedance systems."},{"question":"Is 919-109J-51PX compatible with SMA connectors?","answer":"No — this is an MCX connector, not an SMA. MCX uses a snap-on coupling, while SMA uses a threaded 1/4-36 coupling nut. The two interfaces are mechanically incompatible; an adapter is required to interconnect them."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/919-109J-51PX","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/amphenol/919-109J-51PX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-23T20:41:44.623Z","lastPublished":"2026-07-23T20:41:44.623Z","indexable":true}}