{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0039290243","brand":"Molex","brandSlug":"molex","productSlug":"0039290243","canonicalUrl":"https://icsourcedirect.com/molex/0039290243","factsUrl":"https://icsourcedirect.com/api/mcp/products/0039290243","rawCanonicalId":null},"summary":{"shortDescription":"Molex Mini-Fit Jr 5566 series header, 0039290243, 24-circuit, 4.20mm pitch, shrouded vertical through-hole, locking ramp, 30µin gold mating finish, UL94 V-2, ROHS3 compliant.","salesMarkdown":"## 24-Circuit Shrouded Header with Locking Ramp The 0039290243: This is a Molex Mini-Fit Jr 5566 series board-to-wire header, 24 positions loaded in a dual-row 4.20mm pitch. The contact mating surface carries 30µin gold over nickel, rated for repeated mating cycles well beyond what tin-plated connectors tolerate. In a telecom or industrial panel where the connector sees quarterly disconnect for maintenance, that gold layer supports hundreds of cycles without fretting corrosion at the interface. Termination is solder through-hole — the 0.138-inch (3.50mm) post length provides enough standoff for the solder fillet on a standard 1.6mm PCB. The 4.20mm pitch leaves comfortable routing space between vias for power and signal traces up to the current ceiling of the Mini-Fit Jr contact system. ## Mating Half and Wire-Side Compatibility This header mates with the Mini-Fit Jr 5557 series receptacle housing, which accepts the 5556 crimp terminals for 16-24 AWG wire. For higher vibration environments, a TPA (terminal position assurance) retainer can be added to the receptacle to prevent backed-out contacts.","metaTitle":"Molex 0039290243 Mini-Fit Jr Header, 24 Pos, 4.2mm, Gold","metaDescription":"Molex 0039290243 Mini-Fit Jr 5566 header, 24 circuits, 4.20mm pitch, shrouded, locking ramp, 30µin gold plating. Active production. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"Mini-Fit Jr 5566","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Pin Headers, Sockets & Housings","Pin Headers"],"specifications":{"Mfr":"Molex","Style":"Board to Cable/Wire","Series":"Mini-Fit Jr 5566","Package":"Bulk","Features":"-","Shrouding":"Shrouded - 4 Wall","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":"2","Pitch - Mating":"0.165\\\" (4.20mm)","Product Status":"Active","Voltage Rating":"-","lifecycle_stage":"unknown","Contact Material":"Brass","Insulation Color":"Natural","Insulation Height":"0.504\\\" (12.80mm)","Ingress Protection":"-","Base Product Number":"003929","Insulation Material":"Polyamide (PA66), Nylon 6/6","Number of Positions":"24","Row Spacing - Mating":"0.165\\\" (4.20mm)","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":"Gold","Contact Length - Mating":"-","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-2","Contact Finish Thickness - Post":"100.0µin (2.54µm)","Contact Finish Thickness - Mating":"30.0µin (0.76µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.7500","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.75000","currency":"USD"},{"qty":10,"price":"$10.41900","currency":"USD"},{"qty":100,"price":"$8.28150","currency":"USD"},{"qty":1000,"price":"$7.10606","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/141887e24ee6c04e1db97284619c008f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy Molex 0039290243?","answer":"No stock-holding claim; each order is sourced against the requested quantity."},{"question":"What is the mating connector for Molex 0039290243?","answer":"The mating receptacle is the Molex Mini-Fit Jr 5557 series housing. That housing accepts the 5556-series crimp terminals for 16-24 AWG wire. The locking ramp on this header engages the receptacle's integral latch."},{"question":"Is Molex 0039290243 RoHS compliant?","answer":"Yes, it carries ROHS3 compliance status."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/0039290243","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/0039290243 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}}