{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451429","brand":"Molex","brandSlug":"molex","productSlug":"430451429","canonicalUrl":"https://icsourcedirect.com/molex/430451429","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451429","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 Series, 430451429, Header, Through Hole, 14 Circuits, 2 Rows, 0.118\" (3.00mm) Pitch, Solder Termination, Gold Mating Contacts, Tin Solder Tails, Locking Ramp, 8A, 600V, Tray.","salesMarkdown":"The Molex 430451429 is a 14-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnects. The 8 A per circuit rating at 600 V puts this firmly in the power-distribution class — sized for a DC rail or a moderate-current harness, not a signal line. ## What the 8 A rating means on the bench 8 A per circuit is the headline current at the stated operating temperature range. For a 3.00 mm pitch header, that current density means the contact beam and solder tail are sized for power duty, not just signal switching. The limiting factor in a real harness is the wire gauge you pair it with and the ambient temperature inside the enclosure — the 105°C ceiling is the housing limit, and you derate current above 25°C per the manufacturer's curve. The gold mating finish (30.0 µin) handles the mating cycles better than tin would; if this header is going into a harness that gets mated and unmated during equipment service, the gold pays for itself in contact resistance stability. The 4-wall shrouding protects the 14 pins during handling on the assembly line; a bent pin on a shrouded header is rare unless the receptacle is misaligned on insertion. For the wire side, the mating receptacle uses standard Micro-Fit 3.0 crimp terminals (20-24 AWG range), so if you already run those terminals on your press, the changeover is just a reel swap. ## Board layout notes The 3.00 mm pitch and 0.118\" row spacing define the board footprint — a standard 2-row grid with 0.125\" post length for the solder tails. The insulation height of 0.390\" (9.91 mm) means the header stands tall enough above the board that the mating receptacle clears nearby components — check your z-height budget if the board goes into a tight enclosure.","metaTitle":"Molex Micro-Fit 3.0 430451429 Header, 14 Pos, 3mm, 8A","metaDescription":"Molex 430451429 Micro-Fit 3.0 header, 14 circuits, 3.00mm pitch, 8A, 600V, gold mating contacts, through-hole, locking ramp. Active production, quoted 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":"430451429","Series":"Micro-Fit 3.0 43045","Package":"Tray","Features":"Board Guide","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","description":"CONN HEADER VERT 14POS 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":"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":"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":"$5.66","priceTiers":[{"qty":1,"price":"$5.66000","currency":"USD"},{"qty":10,"price":"$4.97700","currency":"USD"},{"qty":80,"price":"$3.95900","currency":"USD"},{"qty":1872,"price":"$3.16722","currency":"USD"},{"qty":2808,"price":"$3.05410","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/2cd00626506f7b62e7853978b7a4cb8e.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451429/alternatives.json"},"ai":{"faq":[{"question":"What is the mating connector for 430451429?","answer":"The 430451429 mates with a Micro-Fit 3.0 receptacle housing that accepts the standard Micro-Fit 3.0 crimp terminals. The receptacle uses the same locking ramp interface — the pair latches with an audible click."},{"question":"What is the current rating of molex 430451429?","answer":"The 430451429 is rated 8 A per circuit at 600 V. That is a power-class rating for a 3.00 mm pitch header — sized for a DC rail or harness power distribution, not signal-level duty. Derate above 25°C per the manufacturer's curve."},{"question":"What is 430451429's listed style?","answer":"The 430451429 is a Board to Cable/Wire header — it mounts on the PCB via through-hole solder and mates with a wire-harness receptacle. The 4-wall shrouding and locking ramp make it a field-serviceable power interconnect."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451429","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/430451429 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}}