{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STFW8N120K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STFW8N120K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STFW8N120K5","factsUrl":"https://icboms.com/api/mcp/products/STFW8N120K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ K5 series, N-Channel MOSFET, 1200 V drain-source, 6 A continuous drain, 2 Ohm on-resistance at 10 V gate drive, TO-3P-3 Full Pack through-hole package, -55 to 150 °C junction temperature.","salesMarkdown":"## 1200 V N-channel MOSFET — the high-voltage switching workhorse The STFW8N120K5: Gate charge is 13.7 nC at 10 V. At 2.5 A load, the 2 Ohm on-resistance drops about 12.5 W of conduction loss. The 48 W power dissipation ceiling (at case temperature) gives roughly 3.8x headroom at that current, so the part runs cool with a reasonable heatsink. ## Package and mounting — TO-3PF through-hole The TO-3PF is a fully isolated through-hole package — the metal tab is electrically isolated from the die, so no insulating pad is needed between the package and the heatsink.","metaTitle":"STFW8N120K5 N-Channel MOSFET, 1200 V, 6 A, TO-3PF","metaDescription":"STMicroelectronics STFW8N120K5 N-channel MOSFET, 1200 Vdss, 6 A Id, 2 Ohm Rds(on) at 10 V. MDmesh K5 series, TO-3PF package.","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-3P-3 Full Pack","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"5V @ 100µA","Base Product Number":"STFW8","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"2Ohm @ 2.5A, 10V","Power Dissipation (Max)":"48W (Tc)","Supplier Device Package":"TO-3PF","Gate Charge (Qg) (Max) @ Vgs":"13.7 nC @ 10 V","Drain to Source Voltage (Vdss)":"1200 V","Input Capacitance (Ciss) (Max) @ Vds":"505 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"6A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4512","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5d413e1aa40f8cc4170d10cc78cfb5e5.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STFW8N120K5 in this component family?","answer":"Within the MDmesh K5 series, the STFW8N120K5 is a specific voltage and current variant. Pin-compatible alternatives would share the TO-3PF package and gate-drive voltage but differ in Rds(on) or current rating — check the STMicroelectronics MDmesh K5 family table for a parametric match to your load and thermal budget."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STFW8N120K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STFW8N120K5 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}}