{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF21NM50N","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF21NM50N","canonicalUrl":"https://icboms.com/stmicroelectronics/STF21NM50N","factsUrl":"https://icboms.com/api/mcp/products/STF21NM50N","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ II N-Channel MOSFET, 500 V Vdss, 18 A Id, 190 mOhm Rds(on) at 9 A, 10 V, 65 nC Qg, TO-220-3 Full Pack, Through Hole, 150°C junction.","salesMarkdown":"## 500 V MDmesh II — hard-switched SMPS and PFC switch The STF21NM50N is an N-channel MOSFET with 500 V Vdss, 18 A Id, and 190 mOhm Rds(on) at 9 A, 10 V. The TO-220 Full Pack isolates the tab electrically. ## Gate charge and switching behaviour The gate threshold is 4 V at 250 µA drain current. Availability is limited to surplus and broker-channel inventory.","metaTitle":"STF21NM50N N-Channel MOSFET, 500 V, 18 A, TO-220FP, Obsolete","metaDescription":"STF21NM50N MDmesh II N-channel MOSFET, 500 V Vdss, 18 A Id, 190 mOhm Rds(on). TO-220 Full Pack.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ II","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±25V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Base Product Number":"STF21","Operating Temperature":"150°C(TJ)","Rds On (Max) @ Id, Vgs":"190mOhm @ 9A, 10V","Power Dissipation (Max)":"30W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"65 nC @ 10 V","Drain to Source Voltage (Vdss)":"500 V","Input Capacitance (Ciss) (Max) @ Vds":"1950 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"18A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b02ee086ca5106eaa02de43df83e49a8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF21NM50N/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF21NM50N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF21NM50N when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}