{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1-1971921-3","brand":"TE Connectivity AMP Connectors","brandSlug":"te-connectivity-amp-connectors","productSlug":"1-1971921-3","canonicalUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-1971921-3","factsUrl":"https://icsourcedirect.com/api/mcp/products/1-1971921-3","rawCanonicalId":null},"summary":{"shortDescription":"TE Connectivity AMP Connectors 1-1971921-3, header, vertical through-hole, 3 positions (2 loaded), 2.50 mm pitch, shrouded 4-wall, locking ramp, tin-plated contacts, UL94 V-0, glow wire compliant, -40°C to 120°C.","salesMarkdown":"## 2.50 mm pitch, 3-position shrouded header with locking ramp The 1-1971921-3 is a vertical through-hole header from TE Connectivity, pitched at 0.098\" (2.50 mm) with 3 positions — but only 2 are loaded with contacts, so the third position is a keying or polarization slot. The 4-wall shrouding and locking ramp mean this header is designed for a secure, vibration-resistant mate with a matching receptacle — the ramp locks the pair together without a separate latch. ## Loaded positions and board guide detail The 3-position housing carries only 2 tin-plated copper alloy contacts — the empty position acts as a mechanical key to prevent mis-mating with a 3-position receptacle that expects all cavities filled. Supplied in tube packaging, RoHS3 compliant, and sourced to order against RFQ — confirm the mating receptacle and quantity at quote time.","metaTitle":"1-1971921-3 TE Connectivity Header 3 Pos 2.5mm Shrouded","metaDescription":"1-1971921-3 TE Connectivity AMP Connectors header, 3 positions (2 loaded), 2.50mm pitch, shrouded 4-wall, locking ramp, glow wire compliant, UL94 V-0.","metaKeywords":null},"attributes":{"series":null,"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":"-","Package":"Tube","Features":"Board Guide, Glow Wire Compliant","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","Applications":"General Purpose","Contact Type":"Tab","Contact Shape":"Rectangular","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Locking Ramp","Number of Rows":"1","Pitch - Mating":"0.098\\\" (2.50mm)","Product Status":"Active","Voltage Rating":"-","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Natural","Insulation Height":"0.610\\\" (15.49mm)","Ingress Protection":"-","Base Product Number":"1971921","Insulation Material":"Polyamide (PA), Nylon","Number of Positions":"3","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.114\\\" (2.90mm)","Current Rating (Amps)":"-","Operating Temperature":"-40°C ~ 120°C","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Tin","Contact Length - Mating":"-","Number of Positions Loaded":"2","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"-","Contact Finish Thickness - Mating":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6000","priceTiers":[{"qty":1,"price":"$0.60000","currency":"USD"},{"qty":10,"price":"$0.56200","currency":"USD"},{"qty":100,"price":"$0.46780","currency":"USD"},{"qty":500,"price":"$0.39964","currency":"USD"},{"qty":1000,"price":"$0.35028","currency":"USD"},{"qty":5000,"price":"$0.31032","currency":"USD"},{"qty":10000,"price":"$0.28681","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/1-1971921-3/alternatives.json"},"ai":{"faq":[{"question":"What is the exact pinout and dimensions of 1-1971921-3?","answer":"The header has 3 positions in a single row at 2.50 mm pitch, but only 2 positions are loaded with tin-plated contacts. The insulation height is 0.610\" (15.49 mm), and the solder tail length is 0.114\" (2.90 mm). The third position is empty and acts as a keying slot."},{"question":"Is 1-1971921-3 a shrouded header?","answer":"Yes, it is a shrouded - 4 wall header, meaning the housing fully encloses the contact area on all four sides. This protects the pins during handling and guides the mating receptacle into alignment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/te-connectivity-amp-connectors/1-1971921-3","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/1-1971921-3 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}}