{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5054331291","brand":"Molex","brandSlug":"molex","productSlug":"5054331291","canonicalUrl":"https://icsourcedirect.com/molex/5054331291","factsUrl":"https://icsourcedirect.com/api/mcp/products/5054331291","rawCanonicalId":null},"summary":{"shortDescription":"Molex Micro-Lock PLUS 505433 series, 1.25 mm pitch, 12-circuit, 2-row, shrouded, surface-mount pin header, gold-plated contacts, latch holder, UL94 V-0.","salesMarkdown":"## 1.25 mm pitch, 12-position SMT header with shrouded latch The 5054331291: This is a 12-circuit, dual-row, surface-mount pin header from the Molex Micro-Lock PLUS 505433 series. The 1.25 mm pitch sets the board footprint and the per-contact current ceiling — at this pitch, the current is limited by the wire gauge and contact resistance, not the housing. The full 4-wall shrouding protects the gold-plated male pins during blind mating, and the latch holder provides a positive lock with the mating receptacle housing. ## SMT termination with pick-and-place features Surface-mount termination with solder retention and pick-and-place features means this header is designed for high-volume reflow soldering. This eliminates the need for through-hole soldering and reduces assembly cost. Gold-on-gold interface provides corrosion resistance and stable contact resistance over repeated mating cycles — suitable for field-service applications where the connector is cycled a few times per year. ## Mating and termination checklist This header mates with the Micro-Lock PLUS receptacle housing (sold separately) that accepts the matching crimp terminal. The latch holder on the header engages with the receptacle latch to prevent accidental disconnection under vibration. The header is a board-to-cable/wire style, meaning it connects a PCB to a wire harness via the receptacle. The 2-row, 12-position layout with all positions loaded provides a compact interconnect for signal and low-power circuits.","metaTitle":"5054331291 Molex Micro-Lock PLUS Header, 1.25mm, 12 Pos, SMT","metaDescription":"Molex 5054331291 Micro-Lock PLUS header, 1.25mm pitch, 12 circuits, 2 rows, SMT, gold plating, shrouded, latch holder, UL94 V-0.","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":"12","Row Spacing - Mating":"-","Contact Finish - Post":"Gold","Contact Length - Post":"-","Current Rating (Amps)":"Varies by Wire Gauge","Operating Temperature":"-40°C ~ 105°C","Mated Stacking Heights":"-","Overall Contact Length":"-","Contact Finish - Mating":"Gold","Contact Length - Mating":"-","Number of Positions Loaded":"All","Material Flammability Rating":"UL94 V-0","Contact Finish Thickness - Post":"3.94µin (0.100µm)","Contact Finish Thickness - Mating":"3.94µin (0.100µm)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7600","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.76000","currency":"USD"},{"qty":10,"price":"$1.49600","currency":"USD"},{"qty":100,"price":"$1.23580","currency":"USD"},{"qty":500,"price":"$1.38418","currency":"USD"},{"qty":1000,"price":"$1.09277","currency":"USD"},{"qty":1500,"price":"$1.05635","currency":"USD"},{"qty":2500,"price":"$1.01992","currency":"USD"},{"qty":5000,"price":"$0.96892","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Is 5054331291 surface mount or through-hole?","answer":"It is surface mount (SMT) with solder retention and pick-and-place features, designed for reflow soldering."},{"question":"What is the current rating of 5054331291?","answer":"The current rating varies by wire gauge used in the mating terminal. The 1.25 mm pitch and gold-plated contacts support signal-level currents; consult the terminal datasheet for derating based on wire size and ambient temperature."},{"question":"Is 5054331291 RoHS compliant?","answer":"Yes, it is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/5054331291","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/5054331291 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}}