{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF3LN80K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF3LN80K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STF3LN80K5","factsUrl":"https://icboms.com/api/mcp/products/STF3LN80K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ K5 series, N-Channel MOSFET, 800 V drain-source, 2 A continuous drain, 3.25 ohm Rds(on) at 1 A, 10 V gate drive, 2.63 nC gate charge, TO-220-3 Full Pack through-hole package, -55 to 150 °C operating temperature.","salesMarkdown":"## 800 V N-channel MOSFET for offline power conversion The STF3LN80K5 is an 800 V N-channel power MOSFET from ST's MDmesh K5 series, built on a planar technology that balances on-resistance and switching losses for medium-power offline converters. ## Gate drive and switching behaviour Minimum gate threshold of 5 V at 100 µA drain current means the part is fully enhanced with a standard 10 V gate drive, but it will not turn on cleanly with 5 V logic-level signals — the recommended drive voltage for achieving the specified on-resistance is 10 V. Input capacitance measures 102 pF at 100 V drain-source, which keeps the Miller plateau short and supports clean switching edges in hard-switched topologies. ## Thermal and package reality for the BOM Maximum power dissipation is 20 W at case temperature, but the TO-220FP (Full Pack) isolates the back tab — that same plastic overmould limits thermal transfer to the heatsink compared to a standard TO-220 with a metal tab. For continuous operation above a few watts, a properly greased and clamped heatsink is mandatory, and the thermal resistance junction-to-case should be derated from the datasheet curve. RoHS and REACH compliance is standard for this ST product family, consistent with the lead-free plating and halogen-free mould compound used in the TO-220FP package.","metaTitle":"STF3LN80K5 N-Channel MOSFET, 800 V, 2 A, MDmesh K5, TO-220FP","metaDescription":"STF3LN80K5 800V N-channel MOSFET from STMicroelectronics MDmesh K5 series. 3.25 ohm Rds(on) at 1 A, 2.63 nC gate charge. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ K5","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±30V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"5V @ 100µA","Base Product Number":"STF3LN80","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"3.25Ohm @ 1A, 10V","Power Dissipation (Max)":"20W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"2.63 nC @ 10 V","Drain to Source Voltage (Vdss)":"800 V","Input Capacitance (Ciss) (Max) @ Vds":"102 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"2A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6ed6c9e4613c97ce7f63fecfdf29fcbc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF3LN80K5/alternatives.json"},"ai":{"faq":[{"question":"What gate drive voltage does the STF3LN80K5 need?","answer":"The gate threshold is a minimum of 5 V at 100 µA, so 5 V logic-level drive will not fully enhance the channel — a 10 V supply or a dedicated gate driver is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF3LN80K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF3LN80K5 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}}