{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430450421","brand":"Molex","brandSlug":"molex","productSlug":"430450421","canonicalUrl":"https://icsourcedirect.com/molex/430450421","factsUrl":"https://icsourcedirect.com/api/mcp/products/430450421","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 series, 430450421 header, 4 circuits, 2 rows, 0.118\" (3.00mm) pitch, 8A, 600V, through-hole right-angle, tin-plated contacts, board lock, shrouded 4-wall, solder termination.","salesMarkdown":"The Molex 430450421 is a 4-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnects in automotive, industrial, medical, and telecom gear. It carries 8 A per circuit at 600 V on a 3.00 mm pitch — the current rating is the real load-bearing spec here, sized for moderate power distribution inside an enclosure, not signal-level duty. The right-angle through-hole orientation puts the wire exit parallel to the board, which saves height in a shallow lid. ## Board lock and shrouding — why they matter The board lock (a pair of plastic posts that snap into the PCB) holds the header in place during wave solder and resists the shear from the cable strain after mating. The 4-wall shroud protects the male pins from being bent during handling and guides the receptacle home — no bent pins on the line. The locking ramp on the shroud gives an audible click when the mating housing seats, which is the field-service check that the pair is fully mated.","metaTitle":"Molex Micro-Fit 3.0 430450421, 4-Pin Header, 3mm Pitch, 8A","metaDescription":"Molex 430450421 Micro-Fit 3.0 right-angle header, 4 circuits, 3.00mm pitch, 8A, 600V, tin contacts, board lock, UL94 V-0. Active production, ROHS3. Sourced to order.","metaKeywords":null},"attributes":{"series":"Micro-Fit 3.0 43045","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Style":"Board to Cable/Wire","title":"430450421","Series":"Micro-Fit 3.0 43045","Package":"Tray","Features":"Board Lock","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","description":"CONN HEADER R/A 4POS 3MM","Applications":"Automotive, General Purpose, Industrial, Medical, Telecommunications","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole, Right Angle","Connector Type":"Header","Fastening Type":"Locking Ramp","Number of Rows":"2","Pitch - Mating":"0.118\\\" (3.00mm)","Voltage Rating":"600V","Contact Material":"Brass","Insulation Color":"Black","Insulation Height":"0.290\\\" (7.37mm)","Base Product Number":"043045","Insulation Material":"Liquid Crystal Polymer (LCP), Glass Filled","Number of Positions":"4","Row Spacing - Mating":"0.118\\\" (3.00mm)","Contact Finish - Post":"Tin","Contact Length - Post":"0.125\\\" (3.18mm)","Current Rating (Amps)":"8A","Operating Temperature":"-40°C ~ 105°C","Contact Finish - Mating":"Tin","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Mating":"60.0µin (1.52µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.16","priceTiers":[{"qty":1,"price":"$2.16000","currency":"USD"},{"qty":10,"price":"$1.83600","currency":"USD"},{"qty":80,"price":"$1.51700","currency":"USD"},{"qty":2232,"price":"$1.15769","currency":"USD"},{"qty":6696,"price":"$1.06188","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/dfff01b2e2ed78f9b97db4b2de03830c.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430450421/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does the 430450421 carry?","answer":"The 430450421 is ROHS3 compliant and carries a UL94 V-0 flammability rating on the LCP housing. No CE or IEC certification is listed in the spec record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430450421","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/430450421 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:44:45.277Z","lastPublished":"2026-07-16T10:44:45.277Z","indexable":true}}