{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3-644742-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"3-644742-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-644742-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/3-644742-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMP Connectors MTA-156 header, 3-644742-1, 3 positions (2 loaded), 3.96mm pitch, single-row, shrouded 1 wall, friction lock, through-hole solder, gold mating contacts, UL94 V-0.","salesMarkdown":"## What the 3.96mm Pitch and 2 Loaded Positions Mean for Your Build The 3-644742-1: This MTA-156 header carries a 3.96mm pitch — wide enough to route a single 18–22 AWG wire per position without crowding the board trace or the mating receptacle. The 3-position housing ships with only 2 positions loaded, which is a common pattern when one pin serves as a ground or keying placeholder; verify your harness schematic expects two active circuits, not three. The gold mating finish at 30 µinch handles moderate-cycle industrial use — think 50 to 100 matings in a bench tester or control panel where the connector is disconnected quarterly. Tin on the solder post keeps the board-level joint cost-effective. Friction lock holds the header to the mating receptacle with a simple ramp-and-detent — it keeps the pair together under light vibration or cable tug, but won't survive the shock profile of a vehicle or a machine tool spindle. For those environments, look at the MTA-156 with a positive latch. The natural colour insulator is a visual cue that this is the unkeyed version; some MTA-156 housings use colour to indicate polarization.","metaTitle":"3-644742-1 TE Connectivity MTA-156 Header 3 Pos 3.96mm Pitch","metaDescription":"3-644742-1 TE Connectivity AMP Connectors MTA-156 header, 3 positions (2 loaded), 3.96mm pitch, gold mating contacts, friction lock, through-hole solder","metaKeywords":null},"attributes":{"series":"MTA-156","packageCase":null,"mountingType":null,"rohsStatus":"RoHS Compliant","productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings","Pin Headers"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"Board to Cable/Wire","Series":"MTA-156","Package":"Bulk","Features":"-","Shrouding":"Shrouded - 1 Wall","Termination":"Solder","Applications":"General Purpose, Industrial","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Friction Lock","Number of Rows":"1","Pitch - Mating":"0.156\\\" (3.96mm)","Product Status":"Active","Voltage Rating":"600VAC","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Natural","Insulation Height":"0.425\\\" (10.80mm)","Ingress Protection":"-","Base Product Number":"644742","Insulation Material":"Thermoplastic, Glass Filled","Number of Positions":"3","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.125\\\" (3.18mm)","Current Rating (Amps)":"Varies by Wire Gauge","Operating Temperature":"-55°C~105°C","Mated Stacking Heights":"-","Overall Contact Length":"0.650\\\" (16.51mm)","Contact Finish - Mating":"Gold","Contact Length - Mating":"0.400\\\" (10.16mm)","Number of Positions Loaded":"2","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"150.0µin (3.81µm)","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3100","priceTiers":[{"qty":1,"price":"$2.31000","currency":"USD"},{"qty":10,"price":"$2.01400","currency":"USD"},{"qty":100,"price":"$1.79930","currency":"USD"},{"qty":500,"price":"$1.49942","currency":"USD"},{"qty":1000,"price":"$1.28522","currency":"USD"},{"qty":5000,"price":"$1.13956","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/7ac1b1beea64dabc0c2f4cb4b3b121a4.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/3-644742-1/alternatives.json"},"ai":{"faq":[{"question":"Is 3-644742-1 RoHS compliant?","answer":"Yes, 3-644742-1 is RoHS compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/3-644742-1","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/3-644742-1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}