{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"430451816","brand":"Molex","brandSlug":"molex","productSlug":"430451816","canonicalUrl":"https://icsourcedirect.com/molex/430451816","factsUrl":"https://icsourcedirect.com/api/mcp/products/430451816","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Fit 3.0 43045 series, 430451816, dual-row 18-position SMT header, 0.118\" (3.00mm) pitch, gold-over-brass mating contacts (15.0µin) / tin solder-tail finish (100.0µin), 8A per circuit, 600V, board-lock retention, locking ramp, -40°C to 105°C operating, UL94 V-0 LCP housing.","salesMarkdown":"The Molex 430451816 is an 18-circuit, dual-row SMT header from the Micro-Fit 3.0 43045 series, designed for board-to-wire power interconnects. It carries 8 A per circuit at a 3.00 mm pitch, with gold-plated mating contacts (15.0 µin) for reliable low-resistance connections over repeated mating cycles. The 8 A per circuit rating means this header handles power-level current, not just signal; each contact is sized for the DC rail or motor drive, but derate above 105°C per the product drawing. Gold on the mating side (15.0 µin) versus tin on the solder tail tells you the contact interface is built for field-service life — the gold survives repeated unmate/remate cycles without oxidation, while the tin tail reflows cleanly in the SMT oven. ## Board locks and SMT assembly Without them, the solder joints alone would carry the full strain from the locking ramp — a common failure point on unboard-locked SMT headers in high-vibration environments.","metaTitle":"Molex Micro-Fit 3.0 430451816, 18-Pos SMT Header, 3mm Pitch","metaDescription":"Molex 430451816 Micro-Fit 3.0 SMT header, 18 circuits, 3.00mm pitch, 8A per circuit, 600V, gold contacts, board locks. Active production, sourced 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":"430451816","Series":"Micro-Fit 3.0 43045","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Board Lock","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":"$6.88","priceTiers":[{"qty":1,"price":"$6.88000","currency":"USD"},{"qty":10,"price":"$6.01900","currency":"USD"},{"qty":100,"price":"$4.87250","currency":"USD"},{"qty":200,"price":"$4.87250","currency":"USD"},{"qty":1000,"price":"$4.01265","currency":"USD"},{"qty":2000,"price":"$3.92667","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/2cd00626506f7b62e7853978b7a4cb8e.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/430451816/alternatives.json"},"ai":{"faq":[{"question":"What is the pitch of the Molex 430451816?","answer":"The pitch is 0.118\" (3.00 mm), which is the standard Micro-Fit 3.0 spacing. This determines the PCB footprint and ensures compatibility with the matching receptacle."},{"question":"What is the current rating of the 430451816?","answer":"It is rated 8 A per circuit. This is a power-level rating, not signal-level — each contact is sized for DC rail or motor drive current, but derate above 105°C per the product drawing."},{"question":"Does the 430451816 have board locks?","answer":"Yes, it includes board-lock features. These metal tabs hold the header in place during SMT reflow and absorb cable strain after mating, preventing solder joint failure in vibration environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/430451816","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/430451816 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-14T12:54:51.082Z","lastPublished":"2026-07-14T12:54:51.082Z","indexable":true}}