{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"925-118C-51S","brand":"Amphenol","brandSlug":"amphenol","productSlug":"925-118C-51S","canonicalUrl":"https://icsourcedirect.com/amphenol/925-118C-51S","factsUrl":"https://icsourcedirect.com/api/mcp/products/925-118C-51S","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMPM plug, female socket, 50 Ohm, 40 GHz, RG-405 semi-rigid cable, solder shield and contact, snap-on, gold body, 100 mating cycles, bulk pack includes connector + contact + insulator.","salesMarkdown":"It's a 50 Ohm, single-port, snap-on connector rated to 40 GHz — squarely in the millimeter-wave band where board-to-board and module-to-module interconnects need a smaller footprint than standard SMP. The gold-plated beryllium copper body and PTFE dielectric keep the signal clean through the launch. This is the plug half; it mates with any SMPM jack that uses the standard snap-on interface. ## What the 40 GHz Rating Means for the Signal Path 40 GHz is the upper end of the SMPM frequency range — this connector is built for mmWave applications like 5G backhaul, radar modules, and high-speed test heads. ## Cable and Termination Details This plug is built for RG-405 semi-rigid cable — the.085\" or.086\" diameter stuff that holds its shape once bent. Both the shield and the center contact are solder-terminated, so you need a controlled-temp iron and a steady hand; no crimp tool here. That means assembly steps matter: the insulator slides over the center conductor first, then the contact solders to the center pin, and the body solders to the cable braid. Rated for 100 mating cycles — that's typical for a snap-on SMPM connector. The snap-on retention is quick to engage and release, but the beryllium copper fingers in the jack will eventually lose their grip after repeated matings. For a test-fixture or a module that gets swapped quarterly, 100 cycles is plenty. For a permanent install that's mated once and left, it's irrelevant. The 925-138J-51P is the jack (male pin) counterpart to this plug — same SMPM snap-on interface, same 50 Ohm / 40 GHz rating, same beryllium copper construction. The key difference is mating cycles: the 925-138J-51P is rated for 500 cycles versus this plug's 100 cycles. That's because the 925-138J-51P uses a full detent retention feature, which spreads the wear across a larger engagement surface. If your application calls for frequent connect-disconnect — think a production test port or a module that gets swapped weekly — the 925-138J-51P is the better bet. For a one-time cable assembly that stays mated, the 925-118C-51S does the job at a lower cycle count.","metaTitle":"Amphenol RF 925-118C-51S SMPM Plug, 50 Ohm, 40 GHz, RG-405","metaDescription":"Amphenol RF 925-118C-51S SMPM plug, female socket, 50 Ohm, 40 GHz max, for RG-405 semi-rigid cable. Gold-plated beryllium copper body, 100 mating cycles.","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":"3 pcs - 1 Connector, 1 Contact, 1 Insulator","Impedance":"50Ohm","Body Finish":"Gold","Cable Group":"RG-405 (.085\\\", .086\\\" Semi Rigid)","Body Material":"Beryllium Copper","Housing Color":"Gold","Mating Cycles":"100","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Plug, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"-","Product Status":"Active","Connector Style":"SMPM","Frequency - Max":"40 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Solder","Base Product Number":"92511","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":"$8.2500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/fc3dbbd4eea63b27a113af5835013ad1.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/925-118C-51S/alternatives.json"},"ai":{"faq":[{"question":"What is the impedance of 925-118C-51S?","answer":"50 Ohms — standard for RF systems, so it drops into a 50 Ohm line without impedance mismatch."},{"question":"What cable does 925-118C-51S work with?","answer":"RG-405 semi-rigid cable.085\" or.086\" diameter. Both the shield and center contact are solder-terminated."},{"question":"What is the mating cycle rating of 925-118C-51S?","answer":"100 mating cycles — typical for a snap-on SMPM connector. For higher cycle life, consider the 925-138J-51P (500 cycles)."},{"question":"Where can I buy 925-118C-51S?","answer":"Sourced per RFQ against your BOM quantity. Availability and pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/925-118C-51S","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/925-118C-51S 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}}