{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"925-128C-51A","brand":"Amphenol","brandSlug":"amphenol","productSlug":"925-128C-51A","canonicalUrl":"https://icsourcedirect.com/amphenol/925-128C-51A","factsUrl":"https://icsourcedirect.com/api/mcp/products/925-128C-51A","rawCanonicalId":null},"summary":{"shortDescription":"Amphenol RF SMPM plug, female socket, 50 Ohm, DC to 6 GHz, for RG-178/196 cables, snap-on, gold/beryllium copper contacts, 500 mating cycles, includes end cap.","salesMarkdown":"The 925-128C-51A: It terminates RG-178 and RG-196 cables — the two most common miniature coax sizes for this interface — and comes as a kit that includes the connector body and an end cap. The 6 GHz ceiling covers L-band through C-band; for higher-frequency work (up to 40 GHz) you would step to the 925-138J-51P sibling, which is a male pin jack with a full detent. The cable group (RG-178, 196) tells you the coax diameter and dielectric fit — these are 0.070-inch and 0.080-inch cables respectively, so the crimp shield termination and solder centre contact are sized for those dimensions. 500 mating cycles is typical for gold-plated SMPM interfaces; the gold on both centre contact and body finish keeps contact resistance stable over repeated connect-disconnect cycles in test or field-service scenarios. The 925-138J-51P is the male pin jack counterpart in the same SMPM family. Both are 50 Ohm, both use snap-on fastening, and both have 500 mating cycles. The key difference: the 925-128C-51A is a plug with a female socket and uses a crimp shield termination, while the 925-138J-51P is a jack with a male pin and uses a solder shield termination. If your cable assembly calls for a male pin on the mating end, the 925-138J-51P is the direct swap; if you need a female socket, this is your part. The 6 GHz frequency limit is identical on both.","metaTitle":"Amphenol RF 925-128C-51A SMPM Plug, 50 Ohm, 6 GHz","metaDescription":"Amphenol RF 925-128C-51A SMPM plug, female socket, 50 Ohm, DC to 6 GHz, for RG-178/196 cables. Snap-on, gold-plated, 500 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":"2 pcs - 1 Connector, 1 End Cap","Impedance":"50Ohm","Body Finish":"Gold; Nickel","Cable Group":"RG-178, 196","Body Material":"Beryllium Copper, Brass","Housing Color":"Gold, Silver","Mating Cycles":"500","Mounting Type":"Free Hanging (In-Line), Right Angle","Connector Type":"Plug, Female Socket","Fastening Type":"Snap-On","Insertion Loss":"-","Product Status":"Active","Connector Style":"SMPM","Frequency - Max":"6 GHz","Number of Ports":"1","lifecycle_stage":"unknown","Mounting Feature":"-","Ingress Protection":"-","Shield Termination":"Crimp","Base Product Number":"92512","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":"$10.0800","stockQuantity":17,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/8e3571b154e160b48ab8cdf10c184231.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 925-128C-51A?","answer":"Current pricing and lead time are confirmed at quote time — submit an RFQ for your quantity."},{"question":"What is the impedance of 925-128C-51A?","answer":"The impedance is 50 Ohm, the standard for RF signal chains. Confirm your system impedance matches to avoid return loss."},{"question":"Does 925-128C-51A fit RG-178 and RG-196 cables?","answer":"Yes, it is designed for RG-178 and RG-196 cables. The crimp shield termination and solder centre contact are sized for these miniature coax dimensions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/amphenol/925-128C-51A","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/925-128C-51A 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}}