{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STP140NF55","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STP140NF55","canonicalUrl":"https://icboms.com/stmicroelectronics/STP140NF55","factsUrl":"https://icboms.com/api/mcp/products/STP140NF55","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STripFET™ II series, STP140NF55, N-Channel MOSFET (Metal Oxide), 55 V drain-source, 80 A continuous drain, 8 mOhm Rds(on) at 10 V, TO-220-3 through-hole package, -55°C to 175°C junction temperature.","salesMarkdown":"The 55 V Vdss gives comfortable headroom on 12 V and 24 V rails, but it is tight for 48 V systems — budget derating if you push past 40 V steady-state. The 80 A continuous drain is rated at case temperature 25°C; real-world current is derated by the 300 W power dissipation ceiling and the thermal resistance of your heatsink. Gate charge is 142 nC at 10 V, so your gate driver needs to source and sink that charge quickly to avoid slow switching edges and extra dissipation. Through-hole TO-220. Gate threshold 4 V max at 250 µA. Junction temperature -55°C to 175°C.","metaTitle":"STP140NF55 N-Channel MOSFET, 55V 80A TO-220","metaDescription":"STP140NF55 N-channel MOSFET from STMicroelectronics STripFET™ II series. 55V Vdss, 80A Id, 8mOhm Rds(on). NRND status. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"STripFET™ II","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Base Product Number":"STP140","Operating Temperature":"-55°C~175°C(TJ)","Rds On (Max) @ Id, Vgs":"8mOhm @ 40A, 10V","Power Dissipation (Max)":"300W (Tc)","Supplier Device Package":"TO-220","Gate Charge (Qg) (Max) @ Vgs":"142 nC @ 10 V","Drain to Source Voltage (Vdss)":"55 V","Input Capacitance (Ciss) (Max) @ Vds":"5300 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"80A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.3400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d51f4cf6dd1ec69177dd377e5913640a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STP140NF55/alternatives.json"},"ai":{"faq":[{"question":"Is STP140NF55 obsolete?","answer":"It is still available for existing production through independent distribution, but new designs should select a current-production alternative."},{"question":"What is the maximum drain current of STP140NF55?","answer":"80 A continuous at case temperature 25°C. Derate based on your actual case temperature and heatsink — the 300 W power dissipation limit is the ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STP140NF55","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STP140NF55 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}}