{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD9NM50N","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD9NM50N","canonicalUrl":"https://icboms.com/stmicroelectronics/STD9NM50N","factsUrl":"https://icboms.com/api/mcp/products/STD9NM50N","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STD9NM50N, MDmesh™ II N-channel MOSFET, 500 V Vdss, 5 A continuous drain, 790 mOhm Rds(on) at 10 V, 14 nC gate charge, DPAK surface-mount package, 150°C junction temperature.","salesMarkdown":"The 500 V rating places it squarely in offline flyback converters, auxiliary power supplies, and 2-switch forward topologies where the primary-side MOSFET sees the rectified mains plus reflected voltage — typically 400 V to 500 V peak on a 230 VAC input with a 1.3× derating margin. At 2.5 A continuous, expect I²R loss of about 4.9 W — well within the 45 W power dissipation capability of the DPAK package when the PCB copper area under the tab is sized correctly. A typical gate driver sourcing 1 A peak can switch this MOSFET in about 14 ns — fast enough for 100 kHz hard-switching without excessive Miller plateau dwell. The low Qg also means a simple bootstrap supply on the high-side driver is sufficient; no external charge pump or isolated bias rail required. Input capacitance Ciss is 570 pF at 50 V drain bias. Combined with the 14 nC Qg, the switching energy per cycle is modest — the MOSFET is a good fit for medium-frequency converters where the driver IC is a standard 1 A to 2 A part rather than a specialised high-current module. For volume production commitments, the active lifecycle means no forced redesign cycle from a looming EOL.","metaTitle":"STD9NM50N N-Channel MOSFET, 500 V, 5 A, DPAK - MDmesh II","metaDescription":"STD9NM50N N-channel 500V 5A MOSFET in DPAK. 790 mOhm Rds(on), 14 nC gate charge. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":"MDmesh™ II","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ II","Package":"Tape & Reel (TR) Cut Tape (CT)","FET Type":"N-Channel","Vgs (Max)":"±25V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Base Product Number":"STD9","Operating Temperature":"150°C (TJ)","Rds On (Max) @ Id, Vgs":"790mOhm @ 2.5A, 10V","Power Dissipation (Max)":"45W (Tc)","Supplier Device Package":"DPAK","Gate Charge (Qg) (Max) @ Vgs":"14 nC @ 10 V","Drain to Source Voltage (Vdss)":"500 V","Input Capacitance (Ciss) (Max) @ Vds":"570 pF @ 50 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4600","priceTiers":[{"qty":1,"price":"$1.46000","currency":"USD"},{"qty":10,"price":"$1.19500","currency":"USD"},{"qty":100,"price":"$0.92920","currency":"USD"},{"qty":500,"price":"$0.78762","currency":"USD"},{"qty":1000,"price":"$0.64160","currency":"USD"},{"qty":2500,"price":"$0.60399","currency":"USD"},{"qty":5000,"price":"$0.57523","currency":"USD"},{"qty":12500,"price":"$0.54868","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/be98a59e61d26722cf21d3a3059d6ef2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STD9NM50N/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for STD9NM50N?","answer":"The part is active, so no replacement is required. For a pin-compatible alternative, the STD9NM60N (600 V variant) shares the same DPAK footprint and gate drive voltage, but the 100 V higher drain rating comes with a different Rds(on) and gate charge — confirm the electrical margin before substituting."},{"question":"Is STD9NM50N RoHS compliant?","answer":"Yes, the STD9NM50N is ROHS3 compliant, covering the current EU RoHS exemption landscape."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD9NM50N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD9NM50N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}