{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451226","brand":"Molex","brandSlug":"molex","productSlug":"430451226","canonicalUrl":"https://icsourcedirect.com/molex/430451226","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451226","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 series 430451226, Board to Cable/Wire header, 12 positions dual-row, 0.118\" (3.00mm) pitch, 8A per circuit, 600V, male pin, gold mating/tin post, shrouded 4-wall, through hole, kinked pin solder termination, UL94 V-0, -40°C to 105°C, tray.","salesMarkdown":"## Board-to-Wire Power Header for Automotive and Industrial Harnesses The Molex 430451226 is a 12-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnects. Its 0.118\" (3.00 mm) pitch and 8 A per circuit rating place it in the power-distribution class — the contact geometry and housing are sized for sustained current, not just signal-level switching. The tin-plated solder tails (100.0 µin) are standard for wave-solder processes and provide a reliable joint without the cost of gold on the board side. The -40°C to 105°C operating range covers under-hood automotive and industrial cabinet environments, though derating above 85°C is typical for a 3.00 mm pitch connector at this current level. The 600 V rating provides ample creepage margin for 48 V and 400 V bus applications, but the limiting factor in a harness is usually the wire gauge, not the connector voltage. This header mates with the Micro-Fit 3.0 receptacle housings (43025 series) using the matching crimp terminals (43030 for 20-24 AWG or 45750 for 18-24 AWG). The dual-row, 12-circuit layout with 0.118\" (3.00 mm) row spacing means the mating receptacle must also be a 12-position, dual-row housing — a 10-circuit or 14-circuit receptacle will not align. The kinked pin solder tails provide a press-fit retention in the plated through-hole before soldering, which helps maintain coplanarity during wave solder.","metaTitle":"Molex Micro-Fit 3.0 430451226, 12 Pos Header, 3mm Pitch, 8A","metaDescription":"Molex 430451226 Micro-Fit 3.0 header, 12 circuits, 3.00mm pitch, 8A per circuit, 600V, gold mating contacts, shrouded 4-wall, through hole.","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":"430451226","Series":"Micro-Fit 3.0 43045","Package":"Tray","Features":"Board Guide, Board Lock","Shrouding":"Shrouded - 4 Wall","Termination":"Kinked Pin, Solder","description":"CONN HEADER VERT 12POS 3MM","Applications":"Automotive, General Purpose, Industrial, Medical, Telecommunications","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","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":"0.390\\\" (9.91mm)","Base Product Number":"043045","Insulation Material":"Liquid Crystal Polymer (LCP), Glass Filled","Number of Positions":"12","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":"Gold","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"100.0µin (2.54µm)","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.15","priceTiers":[{"qty":1,"price":"$4.15000","currency":"USD"},{"qty":10,"price":"$3.65500","currency":"USD"},{"qty":80,"price":"$2.90750","currency":"USD"},{"qty":1008,"price":"$2.40911","currency":"USD"},{"qty":3024,"price":"$2.24296","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/955975b21a3e7e0c1f6da7f32573f210.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451226/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of molex 430451226?","answer":"The mating pitch is 0.118\" (3.00 mm) for both the position spacing and the row spacing, which is the standard Micro-Fit 3.0 pitch."},{"question":"What is the mating connector for 430451226?","answer":"It mates with a Micro-Fit 3.0 receptacle housing (43025 series) using the 43030 or 45750 crimp terminals, in a 12-circuit dual-row configuration."},{"question":"What current rating for 430451226?","answer":"The header is rated 8 A per circuit, which is a power-level rating for a 3.00 mm pitch connector — suitable for distribution rails and motor drives, not just signal lines."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451226","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/430451226 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}}