{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3-643818-9","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"3-643818-9","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-643818-9","factsUrl":"https://icsourcedirect.com/api/mcp/products/3-643818-9","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity MTA-156 IDC receptacle, 3-643818-9, 9 positions, 1 row, 0.156\" (3.96mm) pitch, 20 AWG, tin contacts, free-hanging, locking ramp, yellow housing.","salesMarkdown":"## IDC Receptacle for Discrete or Ribbon Cable Harnesses The TE Connectivity MTA-156 3-643818-9 is a 9-position, single-row IDC receptacle designed for mass-termination of 20 AWG discrete or ribbon cable. The 0.156\" (3.96mm) pitch matches the standard MTA-156 header footprint, making this a direct wire-to-board interconnect for harness assembly. The yellow housing includes a polarizing key and a closed end, which together ensure the cable is inserted to the correct depth and the connector cannot be mated in reverse orientation. Termination is via insulation displacement (IDC), which eliminates wire stripping and crimping for a single-operation factory harness build. ## Wiring the 20 AWG IDC Termination This receptacle is specifically gated for 20 AWG wire. The IDC slot dimensions and insulation displacement blades are tuned to that gauge; using a different wire size risks an incomplete termination or damaged contacts. The closed-end design acts as a wire stop, so the conductor bottoms out at a consistent depth across all nine positions during gang termination. This thickness is standard for IDC applications where the termination wipes through the wire insulation and makes a gas-tight connection.","metaTitle":"TE MTA-156 3-643818-9, 9 Pos IDC Receptacle, 0.156\" Pitch","metaDescription":"TE MTA-156 3-643818-9 9-position IDC receptacle, 0.156\" pitch, 20 AWG, tin plating, locking ramp. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":"MTA-156","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Circular Connectors","Panel-Mount & In-Line Circular"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Color":"Yellow","Pitch":"0.156\\\" (3.96mm)","Series":"MTA-156","Package":"Bulk","Features":"Closed End, Polarizing Key","Wire Type":"Discrete or Ribbon Cable","Wire Gauge":"20 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":"643818","Number of Positions":"9","Contact Finish Thickness":"80.0µin (2.03µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8000","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.80000","currency":"USD"},{"qty":10,"price":"$0.76500","currency":"USD"},{"qty":25,"price":"$0.73160","currency":"USD"},{"qty":50,"price":"$0.72140","currency":"USD"},{"qty":100,"price":"$0.63030","currency":"USD"},{"qty":250,"price":"$0.60672","currency":"USD"},{"qty":500,"price":"$0.57302","currency":"USD"},{"qty":1000,"price":"$0.49549","currency":"USD"},{"qty":2500,"price":"$0.45841","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/ad26fc9853a9d4a4928ffe54fdc804e3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 3-643818-9 and what is the price?","answer":"3-643818-9 is sourced to order through independent distribution."},{"question":"Is 3-643818-9 a polarized connector with locking ramp?","answer":"Yes. The housing includes a polarizing key to prevent mis-mating, and the fastening type is a locking ramp that provides positive retention when mated with the corresponding header."},{"question":"What is the pitch and wire gauge for 3-643818-9?","answer":"The pitch is 0.156\" (3.96mm) and the wire gauge is 20 AWG. The IDC termination is designed specifically for this wire size."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-643818-9","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/3-643818-9 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}