{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451819","brand":"Molex","brandSlug":"molex","productSlug":"430451819","canonicalUrl":"https://icsourcedirect.com/molex/430451819","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451819","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 430451819, 18-position dual-row SMT header, 3.00mm pitch, 8A per circuit, 600V, gold mating contacts, shrouded 4-wall with locking ramp, solder retention, -40°C to 105°C, UL94 V-0.","salesMarkdown":"## 18-Position SMT Header for Wire-to-Board Power The Molex 430451819 is an 18-position, dual-row surface-mount header from the Micro-Fit 3.0 43045 series. It connects board-side circuitry to a wire harness via the matching Micro-Fit 3.0 receptacle housing and crimp terminals. At 18 positions loaded, every pin is present; there are no optional voids. The 600 V rating and UL94 V-0 housing confirm the connector is rated for use inside equipment enclosures where flame retardance is required. ## How It Compares: 430451819 vs 430451818 The 430451819 carries 18 positions against the 16 positions of the 430451818 at the same 3.00 mm pitch and dual-row layout. The difference is two circuits on the same footprint length — the 18-position version extends the row by one pair of contacts. All other key specs (8 A, 600 V, gold mating plating, shrouded 4-wall, locking ramp, SMT with solder retention) are identical. Choose the position count that matches your circuit count exactly.","metaTitle":"Molex Micro-Fit 3.0 430451819, 18-Pos SMT Header, 3mm Pitch","metaDescription":"Molex 430451819 Micro-Fit 3.0 SMT header, 18 positions, 3.00mm pitch, 8A/600V, gold mating contacts, shrouded 4-wall, locking ramp, solder retention.","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":"430451819","Series":"Micro-Fit 3.0 43045","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Solder Retention","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","description":"CONN HEADER SMD 18POS 3MM","Applications":"Automotive, General Purpose, Industrial, Medical, Telecommunications","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Surface Mount","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","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":"15.0µin (0.38µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.0","priceTiers":[{"qty":1,"price":"$7.00000","currency":"USD"},{"qty":10,"price":"$6.12400","currency":"USD"},{"qty":100,"price":"$4.95780","currency":"USD"},{"qty":200,"price":"$4.95785","currency":"USD"},{"qty":1000,"price":"$4.08292","currency":"USD"},{"qty":2000,"price":"$3.99544","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/00ca37772e7543c28ce45f816c4f34a6.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451819/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of Molex 430451819?","answer":"The mating pitch is 0.118\" (3.00 mm), with the same 0.118\" (3.00 mm) row spacing for the dual-row layout."},{"question":"What is the current rating of Molex 430451819?","answer":"The header is rated 8 A per circuit at 600 V, with gold-plated mating contacts and tin-plated solder tails."},{"question":"Is Molex 430451819 RoHS compliant?","answer":"Yes, it is ROHS3 compliant. The housing material is UL94 V-0 rated LCP, glass-filled."},{"question":"What is the difference between Molex 430451819 and 430451818?","answer":"The 430451819 has 18 positions; the 430451818 has 16 positions. Both share the same 3.00 mm pitch, dual-row layout, 8 A/600 V rating, gold mating contacts, shrouded 4-wall design, locking ramp, and SMT termination with solder retention."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451819","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/430451819 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}}