{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5054331881","brand":"Molex","brandSlug":"molex","productSlug":"5054331881","canonicalUrl":"https://icsourcedirect.com/molex/5054331881","factsUrl":"https://icsourcedirect.com/api/mcp/products/5054331881","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Lock PLUS 505433 series, 5054331881, Board to Cable/Wire header, 18 positions, 2 rows, 1.25mm pitch, SMT, shrouded with latch holder, tin contacts, -40°C to 105°C, UL94 V-0.","salesMarkdown":"## 1.25mm pitch, 18-position SMT header with latch holder The 5054331881: This is a Molex Micro-Lock PLUS 505433 series header, style Board to Cable/Wire, with 18 positions in 2 rows at 1.25mm pitch — a common spacing for compact wire-to-board interconnects in automotive and industrial control modules. ## Surface-mount footprint with solder retention The SMT termination includes solder retention features and a pick-and-place pad, making it suitable for automated assembly lines where the header must stay put during reflow before the mating connector is attached. Mated stack height is 8.6mm — a fixed dimension that sets the clearance between the board and the mating cable housing, so verify your enclosure height before committing. No stock-holding claim — we source and quote against your BOM quantity per RFQ. ## Mates with Micro-Lock PLUS receptacle This header mates with the Micro-Lock PLUS receptacle housing (Molex series 505432) and uses the matching crimp terminals. The latch holder engages with the receptacle's locking ramp for a secure connection.","metaTitle":"Molex 5054331881 Micro-Lock PLUS Header, 18 Pos, 1.25mm, SMT","metaDescription":"Molex 5054331881 Micro-Lock PLUS header, 18 circuits, 1.25mm pitch, SMT, shrouded, latch holder. Active production, ROHS3. Sourced per RFQ.","metaKeywords":null},"attributes":{"series":"Micro-Lock PLUS 505433","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":"Micro-Lock PLUS 505433","Package":"Tape & Reel (TR) Cut Tape (CT)","Features":"Pick and Place, Solder Retention","Shrouding":"Shrouded - 4 Wall","Termination":"Solder","Applications":"Automotive, General Purpose, Industrial","Contact Type":"Male Pin","Contact Shape":"Square","Mounting Type":"Surface Mount","Connector Type":"Header","Fastening Type":"Latch Holder","Number of Rows":"2","Pitch - Mating":"0.049\\\" (1.25mm)","Product Status":"Active","Voltage Rating":"50VAC/DC","lifecycle_stage":"unknown","Contact Material":"Brass","Insulation Color":"Black","Insulation Height":"0.285\\\" (7.25mm)","Ingress Protection":"-","Base Product Number":"505433","Insulation Material":"Polyamide (PA), Nylon","Number of Positions":"18","Row Spacing - Mating":"-","Contact Finish - Post":"Tin","Contact Length - Post":"-","Current Rating (Amps)":"Varies by Wire Gauge","Operating Temperature":"-40°C ~ 105°C","Mated Stacking Heights":"8.6mm","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":"39.4µin (1.00µm)","Contact Finish Thickness - Mating":"39.4µin (1.00µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6200","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.62000","currency":"USD"},{"qty":10,"price":"$1.38100","currency":"USD"},{"qty":100,"price":"$1.14050","currency":"USD"},{"qty":500,"price":"$1.14046","currency":"USD"},{"qty":1000,"price":"$0.90036","currency":"USD"},{"qty":1500,"price":"$0.87035","currency":"USD"},{"qty":2500,"price":"$0.84034","currency":"USD"},{"qty":5000,"price":"$0.79832","currency":"USD"},{"qty":12500,"price":"$0.78032","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/03fb5e474e837e1ba1754b288c19c583.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy Molex 5054331881?","answer":"We source 5054331881 per RFQ against your BOM quantity. No stock-holding claim — current pricing and lead time are confirmed at quote time. Contact us with your target volume and delivery window."},{"question":"What is the difference between 5054331881 and 5054331681?","answer":"The primary difference is position count: 5054331881 has 18 positions, while 5054331681 has 16 positions. Both are 2-row, 1.25mm pitch, SMT headers from the same Micro-Lock PLUS series with identical contact finish and temperature rating."},{"question":"What connector mates with Molex 5054331881?","answer":"It mates with the Micro-Lock PLUS receptacle housing (Molex series 505432) and uses the matching crimp terminals. The latch holder on the header engages with the receptacle's locking ramp."},{"question":"Is 5054331881 RoHS compliant?","answer":"Yes, it is ROHS3 Compliant per the manufacturer's specification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/5054331881","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/5054331881 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}}