{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"193991-4","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"193991-4","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/193991-4","factsUrl":"https://icsourcedirect.com/api/mcp/products/193991-4","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity Multimate XII power stamped pin contact, 193991-4, 8 AWG, silver plating 200.0 µin, crimp termination, bulk.","salesMarkdown":"It carries a silver contact finish at 200.0 µin (5.08 µm) thickness, which is heavy enough for repeated high-current mating in power distribution circuits — bus bars, battery interconnects, and server PSU harnesses where the contact sees thermal cycling, not just signal-level switching. The pin body is copper alloy, and the stamped construction keeps the per-unit cost lower than a machined alternative while still delivering the current capacity the 8 AWG wire demands. ## Silver plating at 200 µin — what that thickness buys you The 200.0 µin silver finish is roughly ten times the thickness of a typical gold flash on signal contacts. Silver's lower bulk resistivity than gold means less heat generation at the interface under high current, and the thick layer resists wear through repeated mating cycles better than a thin flash would. The trade-off is environmental: silver tarnishes in sulfur-bearing atmospheres (industrial plants, some automotive engine bays), so this pin is best suited for clean, dry power applications or sealed connector housings where the contact is not exposed to corrosive air. ## Crimp termination and tooling note This is a crimp-style contact — no soldering, no insulation displacement. The 8 AWG wire size is the only conductor gauge the contact is specified for, so the wire stripping diameter and the crimp die must match that cross-section. TE's application tooling for the Multimate XII series includes a hand-crimp tool and a pneumatic press with the correct die set; using the wrong die on 8 AWG will either under-crimp (high resistance, thermal runaway) or over-crimp (wire fracture at the barrel exit). The contact is supplied loose in bulk, so each piece is fed individually into the crimp tool.","metaTitle":"TE 193991-4 Multimate XII Power Pin, 8 AWG, Silver, 200 µin","metaDescription":"TE Connectivity 193991-4 Multimate XII stamped power pin contact, 8 AWG, silver-plated 200.0 µin. Active production, crimp termination. 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":"Power, Stamped","Series":"Multimate XII","Package":"Bulk","Wire Gauge":"8 AWG","Pin or Socket":"Pin","Contact Finish":"Silver","Product Status":"Active","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Base Product Number":"193991","Contact Termination":"Crimp","Contact Finish Thickness":"200.0µin (5.08µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.1800","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/193991-4/alternatives.json"},"ai":{"faq":[{"question":"Is the 193991-4 pin contact suitable for 8 AWG wire only?","answer":"Yes, the contact is specified for 8 AWG wire. The crimp barrel and current rating are sized for that gauge — using a smaller wire risks poor crimp retention and higher contact resistance."},{"question":"What is the contact finish thickness for 193991-4 and how does it affect performance?","answer":"The silver contact finish is 200.0 µin (5.08 µm) thick. That heavy plating supports high-current, high-cycle power duty better than a thin flash, but silver tarnishes in sulfurous environments, so the contact is best used in sealed or clean-air applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/193991-4","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/193991-4 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}}