{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"0039039102","brand":"Molex","brandSlug":"molex","productSlug":"0039039102","canonicalUrl":"https://icsourcedirect.com/molex/0039039102","factsUrl":"https://icsourcedirect.com/api/mcp/products/0039039102","rawCanonicalId":null},"summary":{"shortDescription":"Molex Mini-Fit Jr 5557 series, 0039039102, 10-circuit dual-row receptacle housing, 4.20mm pitch, latch lock, crimp termination, free-hanging, black PA66, contacts not included.","salesMarkdown":"The Molex 0039039102 is a 10-circuit, dual-row receptacle housing from the Mini-Fit Jr 5557 series. It uses a 0.165\" (4.20mm) pitch and a latch-lock fastening system for positive retention in wire-to-board and wire-to-wire power harnesses. The housing is free-hanging (in-line) and accepts female socket crimp terminals — the contacts are not included and must be ordered separately. Typical applications include power distribution inside enclosures, server PSU harnesses, and automotive interior connections where the latch lock keeps the pair mated under vibration. ## Key Specs That Drive the Fit The 4.20mm pitch is the standard Mini-Fit Jr spacing — it sets the footprint for the mating header and the crimp terminal family. The 10 positions in 2 rows give a 2x5 layout, which is a common circuit count for moderate-current power distribution. The latch lock provides audible and tactile feedback on mate, which is useful in harness assembly where the operator needs to confirm full seating without a visual check. The housing is molded from black PA66 (Nylon 6/6), a standard insulator for this class of connector. It is rated for the full Mini-Fit Jr current range when paired with the correct crimp terminal — the housing itself does not limit current, the contact and wire size do. ## Mating and Termination This receptacle mates with the standard Mini-Fit Jr 4.20mm pitch header (male pin) — the latch lock engages with the header's locking ramp. Termination is crimp-style: the female socket contacts are crimped onto the wire, then inserted into the housing cavity until the terminal retention tang locks. The housing accepts the standard Mini-Fit Jr crimp terminals (e.g., Molex 44476 series for 18-24 AWG).","metaTitle":"Molex 0039039102 Mini-Fit Jr Receptacle, 10 Circuit, 4.20mm","metaDescription":"Molex 0039039102 Mini-Fit Jr 5557 receptacle, 10 positions, 2 rows, 4.20mm pitch, latch lock, crimp termination, black PA66 housing. Contacts not included.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Wire-to-Board Connectors"],"specifications":{"Mfr":"Molex","Note":"Contacts Not Included","Color":"Black","Pitch":"0.165\\\" (4.20mm)","Series":"Mini-Fit Jr 5557","Features":"-","Packaging":"Bulk","Part Status":"Active","Row Spacing":"0.165\\\" (4.20mm)","Contact Type":"Female Socket","Mounting Type":"Free Hanging (In-Line)","Connector Type":"Receptacle","Fastening Type":"Latch Lock","Number of Rows":"2","lifecycle_stage":"unknown","Base Product Number":"003903","Contact Termination":"Crimp","Insulation Material":"Polyamide (PA66), Nylon 6/6","Number of Positions":"10","Operating Temperature":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/b7e09f0a173e5b0b8ada82184bda7890.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy 0039039102?","answer":"0039039102 is available to order through independent distribution. Submit an RFQ for current pricing and lead time — availability is confirmed at quote time."},{"question":"Does 0039039102 include contacts?","answer":"No. The listing note states Contacts Not Included. The crimp terminals (female socket contacts) must be ordered separately as a different line item."},{"question":"What is the pitch of 0039039102?","answer":"The pitch is 0.165\" (4.20mm), which is the standard Mini-Fit Jr spacing."},{"question":"What is the mating connector for 0039039102?","answer":"It mates with a Mini-Fit Jr 4.20mm pitch header (male pin) that has a latch-lock feature. The specific header order code depends on the circuit count, mounting style, and plating required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"isd-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/0039039102","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/0039039102 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:46:37.382Z","lastPublished":"2026-07-22T19:46:37.382Z","indexable":true}}