{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FA1-NKSJ-C01-6","brand":"Amphenol","brandSlug":"amphenol","productSlug":"FA1-NKSJ-C01-6","canonicalUrl":"https://icsourcedirect.com/amphenol/FA1-NKSJ-C01-6","factsUrl":"https://icsourcedirect.com/api/mcp/products/FA1-NKSJ-C01-6","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol SMB/Fakra jack, female socket, 50 Ohm, 4 GHz, latch lock, crimp termination, RG-174/188/316/LMR-100, 5-piece kit, nickel body, gold centre contact.","salesMarkdown":"## SMB/Fakra Jack for RG-174 and LMR-100 Coax — 50 Ohm, 4 GHz The Amphenol FA1-NKSJ-C01-6 is a Code K SMB/Fakra jack, female socket, designed for in-line (free-hanging) termination on small-diameter coaxial cables. It is a 5-piece kit that includes the connector body, centre contact, ferrule, housing, and locking clip — one order code covers the full cable termination hardware. ## Code K Keying and Latch Lock — Vibration-Resistant Mating The Fakra interface uses a colour-coded mechanical keying system; this connector carries Code K, identified by a curry-coloured housing. This jack accepts RG-174, RG-188A, RG-316, LMR-100, and M17/119-RG174 cables — common small-diameter coax types used in low-power RF and signal applications. Note that LMR-. ## RF Performance and Dielectric The PTFE dielectric keeps insertion loss to 0.3 dB at 4 GHz, with a stable dielectric constant over the -40°C to 115°C operating range. For signal paths running up to 4 GHz, this jack delivers a clean launch; above that frequency the VSWR rises and the interface is not specified.","metaTitle":"Amphenol FA1-NKSJ-C01-6 SMB Fakra Jack, 50 Ohm, 4 GHz","metaDescription":"Amphenol FA1-NKSJ-C01-6 SMB/Fakra jack, female socket, 50 Ohm, 4 GHz max, latch lock, crimp termination. Includes 5-piece kit.","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":"Code K","Includes":"5 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Housing, 1 Locking Clip","Impedance":"50Ohm","Body Finish":"Nickel","Cable Group":"RG-174, 188, 188A, 316, LMR-100, M17/119-RG174","Body Material":"Brass","Housing Color":"Curry","Mating Cycles":"100","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Jack, Female Socket","Fastening Type":"Latch Lock","Insertion Loss":"0.3dB","Product Status":"Active","Connector Style":"SMB, Fakra","Frequency - Max":"4 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"FA1-NKSJ","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~115°C","Center Contact Plating":"Gold","Center Contact Material":"Beryllium Copper"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/d070412a21755d7d6c114f893e40ba1f.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/FA1-NKSJ-C01-6/alternatives.json"},"ai":{"faq":[{"question":"What cables are compatible with FA1-NKSJ-C01-6?","answer":"The FA1-NKSJ-C01-6 accepts RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 coaxial cables. LMR-195 is not listed and is too large for the cable entry."},{"question":"What is the difference between latch lock and snap-on coaxial connectors?","answer":"Latch lock (used on this Fakra jack) provides a positive mechanical retention that resists vibration and accidental disconnection, unlike the push-on snap coupling of standard SMB connectors. The latch must be manually released to unmate, which adds security in automotive and industrial environments."},{"question":"Can FA1-NKSJ-C01-6 be used with LMR-195 cable?","answer":"No, LMR-195 is not in the listed cable group (RG-174, 188, 188A, 316, LMR-100, M17/119-RG174). The cable entry and ferrule are sized for these smaller-diameter cables."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/FA1-NKSJ-C01-6","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/FA1-NKSJ-C01-6 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}}