{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1731091043","brand":"Molex","brandSlug":"molex","productSlug":"1731091043","canonicalUrl":"https://icsourcedirect.com/molex/1731091043","factsUrl":"https://icsourcedirect.com/api/mcp/products/1731091043","rawCanonicalId":null},"summary":{"shortDescription":"Molex F, FCT 173109 D-Sub plug, 9 positions, 2 rows, 5A, through-hole solder, machined male pins, steel shell with tin plating, grounding indents, UL94 V-0.","salesMarkdown":"## DE-9 Plug with Grounding Indents The Molex 1731091043 is a 9-position D-Sub plug from the F, FCT 173109 series, configured as a DE-9 (shell size 1) with machined male pins arranged in two rows. This is the standard-density layout used for RS-232 serial, instrumentation, and industrial control interfaces where 9 signal circuits are needed in a compact, keyed shell. The steel shell with tin plating and grounding indents provides a low-impedance path to chassis ground, bleeding shield currents before they couple into the signal pins. The housing is glass-filled polyester rated UL94 V-0, and the contacts are machined from copper alloy. ## Grounding Indents and Shell Design This is a practical EMC feature for assemblies where the cable shield terminates at the backshell — the indents ensure the shield path is continuous through the mated pair, reducing radiated emissions and susceptibility in industrial environments with motor drives or switching power supplies nearby.","metaTitle":"Molex 1731091043 D-Sub Plug, 9-Pin, 5A, Active","metaDescription":"Molex 1731091043 DE-9 D-Sub plug, machined male pins, 5A per contact, -55°C to 125°C, UL94 V-0, grounding indents. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"F, FCT 173109","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["D-Sub & D-Shaped Connectors","D-Sub Cable Assemblies"],"specifications":{"Mfr":"Molex","Color":"White","Series":"F, FCT 173109","Package":"Bulk","Features":"Grounding Indents","Wire Gauge":"-","Termination":"Solder","Contact Form":"Machined","Contact Type":"Signal","Mounting Type":"Through Hole","Connector Type":"Plug, Male Pins","Contact Finish":"-","Flange Feature":"Housing/Shell (Unthreaded)","Number of Rows":"2","Product Status":"Active","Voltage Rating":"-","Backset Spacing":"-","Connector Style":"D-Sub","lifecycle_stage":"unknown","Contact Material":"Copper Alloy","Primary Material":"Metal","Ingress Protection":"-","Base Product Number":"173109","Dielectric Material":"Polyester, Glass Filled","Number of Positions":"9","Current Rating (Amps)":"5A","Operating Temperature":"-55°C ~ 125°C","Shell Material, Finish":"Steel, Tin Plated","Contact Finish Thickness":"-","Material Flammability Rating":"UL94 V-0","Shell Size, Connector Layout":"1 (DE, E)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.8800","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$9.88000","currency":"USD"},{"qty":10,"price":"$8.59200","currency":"USD"},{"qty":100,"price":"$7.08810","currency":"USD"},{"qty":1000,"price":"$5.88529","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icsourcedirect.com/73c3626c0f70cf8a422b522cc946c159.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the mating connector for 1731091043?","answer":"This plug mates with a standard DE-9 D-Sub receptacle (female socket connector) of the same shell size 1 layout. The mating half can be any DE-9 receptacle with the corresponding 9-position, 2-row arrangement — including other Molex FCT series parts or industry-standard D-Sub receptacles. The unthreaded flange accepts standard DE-9 backshells and jack-screw hardware for secure cable mating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icsourcedirect.com/molex/1731091043","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/1731091043 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}}