{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0039302040","brand":"Molex","brandSlug":"molex","productSlug":"0039302040","canonicalUrl":"https://icsourcedirect.com/molex/0039302040","factsUrl":"https://icsourcedirect.com/api/mcp/products/0039302040","rawCanonicalId":null},"summary":{"shortDescription":"Molex Mini-Fit Jr 5566 series, board-to-cable/wire header, 4 circuits, 4.20mm pitch, through-hole solder termination, shrouded with board lock and locking ramp, tin-plated contacts, UL94 V-0 housing.","salesMarkdown":"The 0039302040: This is a 4-circuit, single-row header from the Mini-Fit Jr 5566 series, designed to connect a wire harness to a PCB. ## Pitch, pin count, and footprint fit At 4.20mm pitch and 4 positions, this header matches the standard Mini-Fit Jr receptacle footprint. The insulation height of 0.504\" (12.80mm) means the mated connector stack stays within a reasonable z-height for enclosed assemblies. Mates with Mini-Fit Jr 5556-series receptacle housings (e.g., Molex 39-01-2040 or similar 4-circuit crimp housings). No secondary TPA on this header side, but the ramp alone provides enough retention for most static installations.","metaTitle":"Molex 0039302040 Mini-Fit Jr Header, 4 Pos, 4.20mm, Active","metaDescription":"Molex 0039302040 — Mini-Fit Jr 5566 series, 4-position single-row header, 4.20mm pitch, through-hole, tin contacts, board lock.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings"],"specifications":{"Mfr":"Molex","Style":"Board to Cable/Wire","Series":"Mini-Fit Jr 5566","Features":"Board Lock","Packaging":"Tray","Shrouding":"Shrouded - 4 Wall","Part Status":"Active","Termination":"Solder","Applications":"General Purpose, Industrial, Telecommunications","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Through Hole","Connector Type":"Header","Fastening Type":"Locking Ramp","Number of Rows":"1","Pitch - Mating":"0.165\\\" (4.20mm)","Voltage Rating":"-","lifecycle_stage":"unknown","Contact Material":"Brass","Insulation Color":"Natural","Insulation Height":"0.504\\\" (12.80mm)","Ingress Protection":"-","Base Product Number":"003930","Insulation Material":"Polyamide (PA66), Nylon 6/6","Number of Positions":"4","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"0.138\\\" (3.50mm)","Current Rating (Amps)":"-","Operating Temperature":"-","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Tin","Contact Length - Mating":"-","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"35.0µin (0.90µm)","Contact Finish Thickness - Mating":"35.4µin (0.90µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1300","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/0039302040/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/0039302040","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/0039302040 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:52:26.615Z","lastPublished":"2026-08-11T15:52:26.615Z","indexable":true}}