{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF40N20","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF40N20","canonicalUrl":"https://icboms.com/stmicroelectronics/STF40N20","factsUrl":"https://icboms.com/api/mcp/products/STF40N20","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STripFET N-Channel MOSFET, 200 V Vdss, 40 A Id, 45 mOhm Rds(on) at 20 A, 10 V, TO-220-3 Full Pack (TO-220FP), Through Hole, -55 to 150 °C.","salesMarkdown":"## 200 V, 40 A N-channel — the full-pack power switch The STF40N20: The 45 mOhm maximum on-resistance at 20 A, 10 V gate drive defines the conduction loss floor. ## TO-220FP — isolated tab, no washer needed The TO-220 Full Pack (TO-220FP) package has a fully moulded back — the tab is electrically isolated from the die, so no insulating pad or shoulder washer is required between the device and the heatsink. ## Gate drive and switching profile Gate drive is specified at 10 V for the rated on-resistance. ## Obsolete — sourcing through independent distribution The STF40N20 carries an obsolete lifecycle status.","metaTitle":"STF40N20 N-Channel MOSFET, 200 V, 40 A, 45 mOhm, TO-220FP","metaDescription":"STripFET N-channel MOSFET, 200 V drain-source, 40 A continuous, 45 mOhm Rds(on). TO-220FP full-pack.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"STripFET™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","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":"STF40N","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"45mOhm @ 20A, 10V","Power Dissipation (Max)":"40W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"75 nC @ 10 V","Drain to Source Voltage (Vdss)":"200 V","Input Capacitance (Ciss) (Max) @ Vds":"2500 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"40A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f7cb9ff17932283a218d91692d50afec.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF40N20/alternatives.json"},"ai":{"faq":[{"question":"Can I use STF40N20 in a TO-220 package?","answer":"The STF40N20 is supplied in a TO-220 Full Pack (TO-220FP) package, which is a fully isolated variant of the standard TO-220. It fits the same 3-pin through-hole footprint but has a moulded back — no metal tab for direct heatsink contact. The standard TO-220 and TO-220FP are not mechanically interchangeable without adjusting the heatsink interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF40N20","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF40N20 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}}