{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF12N120K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF12N120K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STF12N120K5","factsUrl":"https://icboms.com/api/mcp/products/STF12N120K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ K5 series, STF12N120K5, N-Channel MOSFET, 1200 V Vdss, 12 A Id, 690 mOhm Rds(on) at 10 V, TO-220-3 Full Pack, Through Hole, -55 to 150 °C.","salesMarkdown":"## 1200 V N-channel MOSFET in the MDmesh K5 family ## What the gate charge and capacitance numbers mean for the drive circuit A gate driver capable of sourcing and sinking at least 1 A will switch the STF12N120K5 cleanly in the 50–100 kHz range. If the switching frequency pushes above 100 kHz, the gate drive losses (Qg × Vgs × fsw) start to become significant in the total power budget. ## Temperature range and thermal design The TO-220FP package has a higher junction-to-case thermal resistance than a standard TO-220 because of the plastic isolation layer — factor that into the heatsink calculation rather than assuming the same thermal performance as a non-isolated TO-220.","metaTitle":"STF12N120K5 N-Channel MOSFET, 1200 V, 12 A, TO-220FP","metaDescription":"STF12N120K5 N-Channel 1200 V MOSFET from STMicroelectronics MDmesh K5 series. 690 mOhm Rds(on), 12 A continuous drain, TO-220 Full Pack.","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":"STF12","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"690mOhm @ 6A, 10V","Power Dissipation (Max)":"40W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"44.2 nC @ 10 V","Drain to Source Voltage (Vdss)":"1200 V","Input Capacitance (Ciss) (Max) @ Vds":"1370 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"12A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.2200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/42097d574d6d8fcfa60355959477138d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF12N120K5/alternatives.json"},"ai":{"faq":[{"question":"What is the closest equivalent to STF12N120K5 if it is unavailable?","answer":"The STF12N120K4 is a potential cross-shop candidate from the same MDmesh K5 family, but verify the parametric differences — particularly the drain-source voltage rating and on-resistance — against your design margin before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF12N120K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF12N120K5 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}}