{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451421","brand":"Molex","brandSlug":"molex","productSlug":"430451421","canonicalUrl":"https://icsourcedirect.com/molex/430451421","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451421","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 header, 430451421, 14-position dual-row 3.00mm pitch, 8A per circuit 600V, tin-plated 60µin, right-angle through-hole solder, shrouded 4-wall with board lock and locking ramp.","salesMarkdown":"The Molex 430451421 is a 14-position, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnect in harness assemblies. It uses a 3.00 mm pitch on both the pin-to-pin and row spacing, which sets the PCB footprint and routing density. Rated at 8 A per circuit with a 600 V voltage rating, this is a power-grade header, not a signal-only interconnect—the 8 A rating gives real headroom for DC rail or motor drive connections in automotive, industrial, and telecom equipment. ## What the key ratings mean for your fit The 3.00 mm pitch is the first dimension to match against your existing PCB layout—it dictates the hole pattern and clearance to adjacent components. The tin-on-tin contact finish at 60 µin on the mating side is a workhorse plating for moderate mating cycles (typically 25-50 cycles); it is not intended for high-cycle or corrosive environments where gold would be specified. The locking ramp and board lock together secure the connector against vibration—the board lock holds the header during wave solder and resists shear from cable strain, while the ramp latches to the mating receptacle housing. The right-angle orientation places the mating face parallel to the board, which saves Z-height in a space-constrained enclosure but requires enough clearance on the board edge for the cable exit. ## Where it fits in the series Within the Micro-Fit 3.0 43045 header family, the 430451421 sits at 14 positions in a dual-row configuration. The same 3.00 mm pitch and 8 A per circuit rating carry across the series, so the main selection driver is position count matching your BOM circuit count. The 16-position sibling 430451610 uses the identical footprint and ratings but adds two more circuits—useful if you need extra power or sense lines without changing the connector family or tooling. The datasheet is available from the manufacturer's documentation portal for the full mechanical drawing and mating interface dimensions.","metaTitle":"Molex Micro-Fit 3.0 430451421 Header, 14 Pos R/A 3mm","metaDescription":"Molex Micro-Fit 3.0 430451421 header, 14-position dual-row right-angle, 8A per circuit at 600V, tin-plated contacts, board lock. Active, available 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":"430451421","Series":"Micro-Fit 3.0 43045","Package":"Tray","Features":"Board Lock","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","description":"CONN HEADER R/A 14POS 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":"14","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":"$5.05","priceTiers":[{"qty":1,"price":"$5.05000","currency":"USD"},{"qty":10,"price":"$4.44300","currency":"USD"},{"qty":80,"price":"$3.53450","currency":"USD"},{"qty":1872,"price":"$2.82757","currency":"USD"},{"qty":2808,"price":"$2.72659","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/2cd00626506f7b62e7853978b7a4cb8e.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451421/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the Molex 430451421 and get a price?","answer":"Availability and current pricing are confirmed at the time of quote—submit an RFQ for your target quantity and we will provide a competitive offer."},{"question":"What is the closest pin-compatible alternative to 430451421?","answer":"Within the same Micro-Fit 3.0 43045 series, the 16-position header 430451610 uses the same 3.00 mm pitch, 8 A rating, and right-angle through-hole mounting. The only difference is the position count—16 versus 14—so it is a drop-in replacement only if your BOM accommodates two extra circuits."},{"question":"What is the mating connector for 430451421?","answer":"This header mates with the matching Micro-Fit 3.0 receptacle housing (such as the 43025 series) and uses the corresponding crimp terminals. The locking ramp on the header engages the latch on the receptacle for positive retention."},{"question":"Is 430451421 RoHS compliant?","answer":"Yes, the 430451421 is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451421","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/430451421 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}}