{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1-66399-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1-66399-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-66399-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/1-66399-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity Multimate III+ series, 1-66399-1 stamped socket contact, crimp termination, 20-24 AWG, tin finish 50.0µin, bulk package.","salesMarkdown":"The 20-24 AWG wire range covers the most common signal and low-power circuit sizes in control cabinets and harness assemblies. The crimp termination is a standard barrel style — the stamped contact body deforms around the stripped conductor and insulation, giving a gas-tight joint when the correct tooling is used. For a harness builder, this means the contact fits a broad range of wire without needing multiple terminal part numbers for different gauges within that span. The 50.0µin tin plating is a robust layer for moderate mating cycle counts — think 25 to 50 cycles in a typical installation-and-service scenario. Tin contacts work well in dry circuit and low-current signal applications where the voltage is high enough to break through the surface oxide film (typically above 5-10 mV). For high-vibration environments or applications requiring hundreds of mating cycles, a gold-plated contact from the same Multimate III+ family would be the better choice, but for most panel wiring and internal harness work, this tin finish is the standard, cost-effective option. ## Multimate III+ Series Compatibility This contact is a direct fit for any Multimate III+ housing that accepts stamped socket contacts — the series includes a wide range of pin and socket housings in various circuit sizes and configurations. If you're stocking spares for a panel that uses Multimate III+ connectors, this contact is the socket-side terminal you need. Stock both halves or neither — the contact alone is useless without the matching pin contact and housing, but as a replacement terminal for an existing assembly, it's the right part.","metaTitle":"TE 1-66399-1 Multimate III+ Stamped Socket Contact","metaDescription":"TE 1-66399-1 stamped socket contact for Multimate III+ series. Crimp termination, 20-24 AWG, 50.0µin tin plating. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circular Connectors","Multi-Purpose Circular"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Type":"Stamped","Series":"Multimate III+","Package":"Bulk","Wire Gauge":"20-24 AWG","Pin or Socket":"Socket","Contact Finish":"Tin","Product Status":"Active","lifecycle_stage":"unknown","Contact Material":"Brass","Base Product Number":"66399","Contact Termination":"Crimp","Contact Finish Thickness":"50.0µin (1.27µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/75fd3e2141d98e23b44a5cb9ce9b5977.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/1-66399-1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 1-66399-1?","answer":"1-66399-1 is available to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time. No stock-holding claim is made here; sourcing is per request."},{"question":"Is 1-66399-1 compatible with Multimate III+ series connectors?","answer":"Yes, the 1-66399-1 is a stamped socket contact designed specifically for the Multimate III+ series. It mates with the corresponding pin contacts and fits into Multimate III+ housings that accept stamped socket terminals."},{"question":"What is the wire gauge range for 1-66399-1?","answer":"The 1-66399-1 accepts 20-24 AWG wire. This covers the common range for signal and low-power circuits in control and harness applications."},{"question":"What is the contact finish for 1-66399-1?","answer":"The contact has a tin finish with a thickness of 50.0µin (1.27µm). This provides good corrosion resistance for general-purpose use with moderate mating cycle requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-66399-1","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/te-connectivity-amp-connectors/1-66399-1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:51:40.457Z","lastPublished":"2026-07-22T18:51:40.457Z","indexable":true}}