{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"644874-4","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"644874-4","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/644874-4","factsUrl":"https://icsourcedirect.com/api/mcp/products/644874-4","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMP Connectors MTA-100 series, 4-position single-row through-hole header, 0.100\" (2.54mm) pitch, shrouded-1 wall, friction lock, tin-plated square pins, UL94 V-0, ROHS3 compliant.","salesMarkdown":"The 644874-4: With 4 positions loaded, the header occupies a compact 0.400\" (10.16mm) of board edge, leaving room for adjacent connectors on tight layouts. The kinked pin solder termination provides mechanical retention in the plated through-hole before wave soldering — the kink acts as a press-fit interference that holds the header upright during assembly. ## Mating half and locking: friction lock compatibility The single-wall shroud (shrouded-1 wall) protects the mating pins from accidental shorting against the board or chassis, but does not provide the full polarization of a 4-wall shroud — orientation is guided by the friction lock keying, not by a shroud wall. For a typical 22 AWG wire in a 25°C ambient, the MTA-100 system is commonly rated around 5 A per contact, but derate above 25°C per the product derating curve. Voltage rating is 250VAC, which covers most signal-level AC and DC circuits in industrial control, instrumentation, and consumer electronics.","metaTitle":"644874-4 TE Connectivity MTA-100 Header, 4 Pos, 0.100\" Pitch","metaDescription":"TE Connectivity MTA-100 4-position single-row header, 0.100\" (2.54mm) pitch, shrouded-1 wall, friction lock, tin-plated contacts, UL94 V-0.","metaKeywords":null},"attributes":{"series":"MTA-100","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings","Pin Headers"],"specifications":{"Mfr":"TE Connectivity AMP Connectors","Style":"Board to Cable/Wire","Series":"MTA-100","Package":"Bulk","Features":"-","Shrouding":"Shrouded - 1 Wall","Termination":"Kinked Pin, Solder","Applications":"General Purpose","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Friction Lock","Number of Rows":"1","Pitch - Mating":"0.100\\\" (2.54mm)","Product Status":"Active","Voltage Rating":"250VAC","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Natural","Insulation Height":"0.310\\\" (7.87mm)","Ingress Protection":"-","Base Product Number":"644874","Insulation Material":"Thermoplastic","Number of Positions":"4","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":"0.520\\\" (13.21mm)","Contact Finish - Mating":"Tin","Contact Length - Mating":"0.295\\\" (7.49mm)","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":"$0.5900","priceTiers":[{"qty":1,"price":"$0.59000","currency":"USD"},{"qty":10,"price":"$0.55000","currency":"USD"},{"qty":100,"price":"$0.45790","currency":"USD"},{"qty":500,"price":"$0.39118","currency":"USD"},{"qty":1000,"price":"$0.34286","currency":"USD"},{"qty":5000,"price":"$0.30374","currency":"USD"},{"qty":10000,"price":"$0.28073","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/644874-4/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 644874-4 and how is it quoted?","answer":"644874-4 is sourced through independent distribution channels. Submit an RFQ for a firm quote."},{"question":"What is the pitch of 644874-4?","answer":"The pitch is 0.100\" (2.54mm), which is the standard 0.100-inch grid used across the MTA-100 series. This sets the board footprint and the mating half requirement."},{"question":"Is 644874-4 RoHS compliant?","answer":"Yes, 644874-4 is ROHS3 compliant — lead-free and free of the six restricted substances under the RoHS directive."},{"question":"What is the compatible receptacle for 644874-4?","answer":"This header mates with MTA-100 receptacle housings that accept the matching crimp socket contacts. The friction lock on the header engages with the corresponding ramp on the receptacle housing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/644874-4","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/644874-4 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}}