{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3-643821-2","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"3-643821-2","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-643821-2","factsUrl":"https://icsourcedirect.com/api/mcp/products/3-643821-2","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity MTA-156 receptacle, 3-643821-2, 2 positions, 1 row, 0.156\" (3.96mm) pitch, IDC termination, tin contact finish, free-hanging, locking ramp, blue housing.","salesMarkdown":"## Two-Position IDC Receptacle for 0.156\" Pitch Ribbon Cable The 3-643821-2: The 0.156\" (3.96mm) pitch matches the standard MTA-156 header footprint, so the cable slot lines up with the header pins without guesswork. Blue housing with a closed end and a polarizing key means the cable can't be shoved in backwards or from the wrong side. ## IDC Termination and 26 AWG Wire This receptacle is built for 26 AWG wire — the IDC slot is dimensioned for that conductor diameter. Push the ribbon cable or discrete wires into the slot, press the cover down, and the contacts slice through the insulation to grab the conductor. No stripping, no crimping, no extra parts. ## Locking Ramp and Polarizing Key The polarizing key on the closed end ensures the receptacle only mates one way with the header, so you don't discover a reversed cable after the harness is tied down. Free-hanging (in-line) mounting means it floats on the cable, not on the board — useful for point-to-point wiring where the header is panel-mounted or board-mounted.","metaTitle":"TE MTA-156 3-643821-2, 2-Pos IDC Receptacle, 0.156\" Pitch","metaDescription":"TE MTA-156 3-643821-2 2-position IDC receptacle, 0.156\" pitch, tin plating, locking ramp, RoHS. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":"MTA-156","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Circular Connectors","Panel-Mount & In-Line Circular"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Color":"Blue","Pitch":"0.156\\\" (3.96mm)","Series":"MTA-156","Package":"Bulk","Features":"Closed End, Polarizing Key","Wire Type":"Discrete or Ribbon Cable","Wire Gauge":"26 AWG","Row Spacing":"-","Contact Type":"Female Socket","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Receptacle","Contact Finish":"Tin","Fastening Type":"Locking Ramp","Number of Rows":"1","Product Status":"Active","lifecycle_stage":"unknown","Cable Termination":"IDC","Base Product Number":"643821","Number of Positions":"2","Contact Finish Thickness":"80.0µin (2.03µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3400","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.34000","currency":"USD"},{"qty":10,"price":"$0.30700","currency":"USD"},{"qty":25,"price":"$0.30560","currency":"USD"},{"qty":50,"price":"$0.29940","currency":"USD"},{"qty":100,"price":"$0.25580","currency":"USD"},{"qty":250,"price":"$0.23024","currency":"USD"},{"qty":500,"price":"$0.21744","currency":"USD"},{"qty":1000,"price":"$0.19058","currency":"USD"},{"qty":2500,"price":"$0.18930","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/fdbcce876e4e651cce625f0f39993f5e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 3-643821-2?","answer":"Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What is the mating part for 3-643821-2?","answer":"This receptacle mates with a 0.156\" pitch MTA-156 header — typically a straight or right-angle pin header with 2 positions and a locking ramp. The polarizing key ensures correct orientation."},{"question":"Is 3-643821-2 RoHS compliant?","answer":"Yes, 3-643821-2 is RoHS compliant — no restricted substances in the housing or tin plating."},{"question":"What wire gauge does 3-643821-2 support?","answer":"3-643821-2 is designed for 26 AWG discrete or ribbon cable. The IDC slot is sized for that conductor diameter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-643821-2","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/3-643821-2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:25.888Z","lastPublished":"2026-07-20T14:34:25.888Z","indexable":true}}