{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"919-118J-51PT","brand":"Amphenol","brandSlug":"amphenol","productSlug":"919-118J-51PT","canonicalUrl":"https://icsourcedirect.com/amphenol/919-118J-51PT","factsUrl":"https://icsourcedirect.com/api/mcp/products/919-118J-51PT","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF MCX receptacle, female socket, 50 Ohm, 2 GHz, 1 port, SMT, gold body, snap-on, 500 mating cycles, 0.1 dB insertion loss.","salesMarkdown":"The Amphenol RF 919-118J-51PT is a 50 Ohm MCX receptacle, female socket, designed for surface-mount termination on a PCB. It carries a single port with a snap-on fastening type, rated to 2 GHz maximum frequency. The gold-plated brass body and beryllium copper center contact with gold plating support 500 mating cycles, and the PTFE dielectric keeps insertion loss to 0.1 dB across the band. This connector suits RF signal paths in compact wireless modules, test equipment, and instrumentation where a low-profile, quick-connect MCX interface is needed. ## Signal Integrity and Frequency Ceiling The 2 GHz frequency ceiling defines the usable bandwidth — above that, the snap-on interface and PTFE dielectric begin to introduce reflections. The 0.1 dB insertion loss is low enough that a single mated pair in the signal path adds negligible attenuation at 2 GHz. ## Mating Cycles and Field Service For a permanent install, the cycle count is more than adequate; for a daily-use test port, it gives a reasonable service life before replacement. Surface-mount termination with the shield soldered to the PCB ground plane. The snap-on fastening means the mating plug clicks into place without a coupling nut — quick to mate, but the retention relies on the snap detent, so the board-side solder joint must handle any cable strain.","metaTitle":"Amphenol RF 919-118J-51PT MCX Receptacle, 50 Ohm, 2 GHz","metaDescription":"Amphenol RF 919-118J-51PT MCX receptacle, female socket, 50 Ohm impedance, 2 GHz max frequency, 500 mating cycles, gold plating, SMT.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"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":"Surface Mount","Connector Type":"Receptacle, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"0.1dB","Product Status":"Active","Voltage Rating":"500 V","Connector Style":"MCX","Frequency - Max":"2 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"91911","Contact Termination":"Solder","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.2493","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b9d7635183d4d9e54625e304c495a00f.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/919-118J-51PT/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance and connector type of the 919-118J-51PT?","answer":"It is a 50 Ohm MCX receptacle, female socket, with a snap-on fastening type."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/919-118J-51PT","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/919-118J-51PT 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}}