{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3FA1-NISJ-C01W0","brand":"Amphenol","brandSlug":"amphenol","productSlug":"3FA1-NISJ-C01W0","canonicalUrl":"https://icsourcedirect.com/amphenol/3FA1-NISJ-C01W0","factsUrl":"https://icsourcedirect.com/api/mcp/products/3FA1-NISJ-C01W0","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMB Fakra jack, 50 Ohm, 3 GHz, Code I keying, 1 port, crimp termination, free hanging, latch lock, beige housing, tin body.","salesMarkdown":"## 50 Ohm, 3 GHz — RF Signal Path Specs The 3FA1-NISJ-C01W0: The 50 Ohm impedance matches the standard RF system impedance for telecom and wireless equipment, so the signal path sees minimal reflection at the interconnect. The 3 GHz upper frequency covers GPS, cellular (including 4G LTE bands), and ISM-band applications; above that the VSWR rises beyond the design window. The PTFE dielectric keeps insertion loss stable across the temperature range and provides consistent phase performance. The listed cable group — RG-174, RG-188, RG-188A, RG-316, LMR-100, M17/119-RG174 — covers the common small-diameter 50 Ohm coax types used in vehicle and equipment harnesses. ## Code I Keying — Fakra Variant Identification The Code I keying is a Fakra colour-and-mechanical coding standard that prevents a jack from mating with a plug of a different code. This matters in multi-connector systems — GPS, satellite radio, cellular, and camera feeds each get their own code so the harness cannot be misassembled. The beige housing colour corresponds to the Code I assignment. When replacing a Fakra connector in an existing harness, confirm the code matches the mating plug.","metaTitle":"Amphenol RF 3FA1-NISJ-C01W0 SMB Fakra Jack, 50 Ohm, 3 GHz","metaDescription":"Amphenol RF 3FA1-NISJ-C01W0 SMB Fakra jack, 50 Ohm, 3 GHz max, Code I keying, crimp termination, latch lock, free hanging, RG-174/188/316 compatible, active","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["RF / Coaxial Connectors"],"specifications":{"Mfr":"Amphenol RF","Series":"-","Package":"Tray","Features":"Code I","Includes":"-","Impedance":"50Ohm","Body Finish":"Tin","Cable Group":"RG-174, 188, 188A, 316, LMR-100, M17/119-RG174","Body Material":"Zinc Die Cast","Housing Color":"Beige","Mating Cycles":"100","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Jack, Female Socket","Fastening Type":"Latch Lock","Insertion Loss":"-","Product Status":"Active","Connector Style":"SMB, Fakra","Frequency - Max":"3 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"3FA1-NISJ","Contact Termination":"Crimp","Dielectric Material":"Polytetrafluoroethylene (PTFE)","Operating Temperature":"-40°C~85°C","Center Contact Plating":"Gold","Center Contact Material":"Brass"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4847","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/7d1e92db49a2fb6dcd8ba3513d906012.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/3FA1-NISJ-C01W0/alternatives.json"},"ai":{"faq":[{"question":"What cables are compatible with 3FA1-NISJ-C01W0?","answer":"This jack is compatible with RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 coax cables."},{"question":"What is the impedance and mating cycles of 3FA1-NISJ-C01W0?","answer":"The impedance is 50 Ohm and the jack is rated for 100 mating cycles."},{"question":"What is the difference between Code I and other Fakra codes?","answer":"Code I is a Fakra keying variant that prevents cross-mating with other codes. Each code (A through K) has a distinct mechanical key and housing colour — Code I uses a beige housing. The keying ensures that a GPS antenna jack, for example, cannot be plugged into a satellite radio port."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/3FA1-NISJ-C01W0","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/3FA1-NISJ-C01W0 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}}