{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451814","brand":"Molex","brandSlug":"molex","productSlug":"430451814","canonicalUrl":"https://icsourcedirect.com/molex/430451814","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451814","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 header, 18 positions, dual-row, 3.00mm pitch, 8A per circuit at 600V, through-hole kinked-pin solder termination, gold mating finish, 4-wall shrouded with board guide.","salesMarkdown":"The Molex 430451814 is an 18-circuit, dual-row header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power and signal interconnects. It uses a 3.00 mm pitch on both the pin-to-pin and row spacing, which gives enough creepage for the 600 V rating without forcing an oversized board footprint. The header is through-hole mounted with kinked solder tails for retention during wave soldering, and the 4-wall shrouding protects the male pins from damage during handling and blind mating. A built-in board guide on the housing aids alignment during PCB insertion, reducing the risk of bent pins on the assembly line. ## Key Ratings and What They Mean Rated 8 A per circuit at 600 V, this header carries bus-level current per pin — sized for a power distribution rail inside a harness, not a low-current signal line. The 30.0 µinch gold plating on the mating surface is a robust industrial grade, supporting repeated mating cycles in automotive or medical equipment where field service is expected. The tin-plated solder tails (100.0 µinch) are standard for through-hole soldering. The UL94 V-0 liquid crystal polymer housing and -40°C to 105°C operating range suit it for under-hood automotive and industrial cabinet environments where thermal cycling and flammability ratings are specified. ## Mating and Termination This header mates with the matching Micro-Fit 3.0 receptacle housing (sold separately) using a positive locking ramp for vibration-resistant connection. The kinked-pin solder termination provides a press-fit retention in the plated through-hole before soldering, which helps hold the component in place during board handling. For a complete wire-to-board connection, pair it with the appropriate Micro-Fit 3.0 crimp terminals and receptacle housing.","metaTitle":"Molex Micro-Fit 3.0 430451814, 18-Pos Header, 3mm Pitch, 8A","metaDescription":"Molex 430451814 Micro-Fit 3.0 header, 18 circuits, dual-row, 3.00mm pitch, 8A per circuit, 600V, gold-plated contacts, shrouded.","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":"430451814","Series":"Micro-Fit 3.0 43045","Package":"Tray","Features":"Board Guide","Shrouding":"Shrouded - 4 Wall","Termination":"Kinked Pin, Solder","description":"CONN HEADER VERT 18POS 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":"18","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":"$6.79","priceTiers":[{"qty":1,"price":"$6.79000","currency":"USD"},{"qty":10,"price":"$5.94000","currency":"USD"},{"qty":80,"price":"$4.80863","currency":"USD"},{"qty":1440,"price":"$3.96005","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/a283fda15a552c20fc3972645f68000d.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451814/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of the 430451814?","answer":"The 430451814 uses a 3.00 mm (0.118 inch) pitch on both the pin-to-pin spacing and the row-to-row spacing, matching the standard Micro-Fit 3.0 footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451814","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/430451814 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}}