{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0039012181","brand":"Molex","brandSlug":"molex","productSlug":"0039012181","canonicalUrl":"https://icsourcedirect.com/molex/0039012181","factsUrl":"https://icsourcedirect.com/api/mcp/products/0039012181","rawCanonicalId":null},"summary":{"shortDescription":"Molex Mini-Fit Jr 5559 series, 0039012181, plug housing, 18 positions, 2 rows, 4.20mm pitch, panel mount snap-in, locking ramp, natural PA66, crimp termination, contacts not included.","salesMarkdown":"## Housing for a 18-Circuit Power Harness The Molex 0039012181 is the 18-position plug housing from the Mini-Fit Jr 5559 series, a dual-row panel-mount shell with a 4.20mm pitch. This is the housing only; you order the crimp contacts separately to populate the 18 cavities. ## What It Takes to Populate It The 18 cavities accept the standard Mini-Fit Jr male crimp terminal. The 18-position 0039012181 sits alongside the 12-position 0039012081 in the same Mini-Fit Jr 5559 family. Both share the 4.20mm pitch, dual-row layout, locking ramp, and panel-mount snap-in. The difference is the circuit count — 18 positions vs 12 — which changes the harness width and the number of terminals you need to crimp. If your BOM calls for 12 circuits, the 0039012081 is the direct fit; for 18, this is the one.","metaTitle":"Molex Mini-Fit Jr 5559 0039012181, 18-Pos Plug Housing","metaDescription":"Molex 0039012181 Mini-Fit Jr 5559 plug housing, 18 positions, 4.20mm pitch, dual row, natural PA66. Contacts not included. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":"Mini-Fit Jr 5559","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Wire-to-Board Connectors","Connector Housings"],"specifications":{"Mfr":"Molex","Note":"Contacts Not Included","Color":"Natural","Pitch":"0.165\\\" (4.20mm)","Series":"Mini-Fit Jr 5559","Package":"Bulk","Features":"-","Row Spacing":"0.165\\\" (4.20mm)","Contact Type":"Male Pin","Mounting Type":"Panel Mount, Snap-In","Connector Type":"Plug","Fastening Type":"Locking Ramp","Number of Rows":"2","Product Status":"Active","lifecycle_stage":"unknown","Base Product Number":"003901","Contact Termination":"Crimp","Insulation Material":"Polyamide (PA66), Nylon 6/6","Number of Positions":"18","Operating Temperature":"-40°C ~ 105°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2600","priceTiers":[{"qty":1,"price":"$1.26000","currency":"USD"},{"qty":10,"price":"$1.04200","currency":"USD"},{"qty":100,"price":"$0.86860","currency":"USD"},{"qty":1000,"price":"$0.69488","currency":"USD"},{"qty":2500,"price":"$0.62974","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/0fdfb160125b75435196492678694602.pdf","sourceUrl":null,"alternativesUrl":"https://icsourcedirect.com/api/mcp/products/0039012181/alternatives.json"},"ai":{"faq":[{"question":"Does 0039012181 come with contacts included?","answer":"No, contacts are not included. The 0039012181 is a plug housing only; you must order the male crimp terminals separately (Molex 44476 or 45750 series) to populate the 18 cavities."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/0039012181","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/0039012181 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}}