{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2-644751-1","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"2-644751-1","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/2-644751-1","factsUrl":"https://icsourcedirect.com/api/mcp/products/2-644751-1","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMP Connectors MTA-156 header, 2-644751-1, 21-position single-row, 0.156\" (3.96mm) pitch, right-angle through-hole, tin-plated square pins, unshrouded, UL94 V-0 natural thermoplastic housing.","salesMarkdown":"## Board Layout Fit: 0.156\" Pitch, 21 Positions, Right-Angle The 2-644751-1: This is a 21-position single-row header on a 0.156\" (3.96mm) pitch — the footprint takes about 3.12 inches of board edge for the full row. All 21 positions are loaded, so there are no empty cavities to manage in the BOM or on the line. The square male pins measure 0.390\" (9.91mm) mating length and 0.175\" (4.45mm) post length for solder-through-hole assembly. ## Current and Voltage: Wire-Gauge Dependent, 600VAC Rating The voltage rating is 600VAC, which covers most industrial control and appliance power distribution. Tin-plated mating contacts are suited for moderate-cycle applications in controlled environments.","metaTitle":"2-644751-1 TE Connectivity MTA-156 Header, 21 Pos","metaDescription":"2-644751-1 TE Connectivity AMP Connectors MTA-156 header, 21 positions, 0.156\" (3.96mm) pitch, right-angle through-hole, tin contacts, UL94 V-0.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"Board to Cable/Wire","Series":"MTA-156","Package":"Bulk","Features":"-","Shrouding":"Unshrouded","Termination":"Solder","Applications":"General Purpose, Industrial","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole, Right Angle","Connector Type":"Header","Fastening Type":"-","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":"0.125\\\" (3.18mm)","Ingress Protection":"-","Base Product Number":"644751","Insulation Material":"Thermoplastic, Glass Filled","Number of Positions":"21","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.175\\\" (4.45mm)","Current Rating (Amps)":"Varies by Wire Gauge","Operating Temperature":"-55°C~105°C","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Tin","Contact Length - Mating":"0.390\\\" (9.91mm)","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0199","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/35932fe046d4d4e2cae4e1e99d2494c7.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/2-644751-1/alternatives.json"},"ai":{"faq":[{"question":"What is the mating connector for 2-644751-1?","answer":"This unshrouded header mates with MTA-156 receptacle housings and crimp socket terminals from the same series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/2-644751-1","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/2-644751-1 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}}