{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"2018431040","brand":"Molex","brandSlug":"molex","productSlug":"2018431040","canonicalUrl":"https://icsourcedirect.com/molex/2018431040","factsUrl":"https://icsourcedirect.com/api/mcp/products/2018431040","rawCanonicalId":null},"summary":{"shortDescription":"Molex MultiCat 201843 series, 2018431040, board-to-cable/wire header, 4 circuits, 7.40mm pitch, right-angle through-hole, shrouded with latch lock, gold-plated mating contacts, 1200V rating, -40°C to 150°C, UL94 V-0.","salesMarkdown":"## 7.40mm pitch and 1200V — the clearance story The 2018431040: The 0.291\" (7.40mm) pitch on this single-row header is the mechanical enabler for the 1200V voltage rating — wide contact spacing prevents flashover between adjacent pins in high-potential circuits. This is not a dense signal connector; the pitch and voltage pair it for power distribution in aerospace, automotive, industrial, and medical equipment where isolation margins matter. ## Right-angle through-hole and latch lock for vibration duty The latch lock holds the mating half under shock and vibration — a requirement for automotive and industrial harnesses. The 4-wall shrouding protects the male pins from damage during handling and guides the mating receptacle into alignment before the latch engages. ## PEI insulation and 150°C ceiling Polyetherimide (PEI) housing with UL94 V-0 flammability rating supports the -40°C to 150°C operating range — this header is specified for under-hood automotive, high-temp industrial cabinets, and medical sterilization cycles.","metaTitle":"Molex 2018431040 MultiCat Header R/A 4POS 7.4mm","metaDescription":"Molex 2018431040 MultiCat 201843 header, 4-position, 7.40mm pitch, right-angle through-hole, shrouded, latch lock, 1200V, -40°C to 150°C, UL94 V-0.","metaKeywords":null},"attributes":{"series":"MultiCat 201843","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings","Pin Headers"],"specifications":{"Mfr":"Molex","Style":"Board to Cable/Wire","Series":"MultiCat 201843","Package":"Tray","Features":"Board Guide","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","Applications":"Aerospace, Automotive, Industrial, Medical","Contact Type":"Male Pin","Contact Shape":"Circular","Mounting Type":"Through Hole, Right Angle","Connector Type":"Header","Fastening Type":"Latch Lock","Number of Rows":"1","Pitch - Mating":"0.291\\\" (7.40mm)","Product Status":"Active","Voltage Rating":"1200V","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Insulation Color":"Black","Insulation Height":"0.380\\\" (9.65mm)","Ingress Protection":"-","Base Product Number":"201843","Insulation Material":"Polyetherimide (PEI)","Number of Positions":"4","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"-","Current Rating (Amps)":"Varies by Wire Gauge","Operating Temperature":"-40°C ~ 150°C","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Gold","Contact Length - Mating":"-","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"196.9µin (5.00µm)","Contact Finish Thickness - Mating":"3.90µin (0.099µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.1700","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$22.17000","currency":"USD"},{"qty":10,"price":"$19.17500","currency":"USD"},{"qty":135,"price":"$16.41830","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/19379b0af3567651928932ed7d57772f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pin pitch of Molex 2018431040?","answer":"The mating pitch is 0.291\" (7.40mm), single row, 4 positions loaded. This wide pitch supports the 1200V voltage rating and is not compatible with standard 2.54mm or 5.08mm headers."},{"question":"Does 2018431040 have a latch lock?","answer":"Yes, the fastening type is Latch Lock. It provides positive retention with the mating MultiCat receptacle, suitable for vibration-prone environments like automotive and industrial applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/2018431040","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/molex/2018431040 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:45.458Z","lastPublished":"2026-07-17T19:50:45.458Z","indexable":true}}