{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF7N105K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF7N105K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STF7N105K5","factsUrl":"https://icboms.com/api/mcp/products/STF7N105K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH5™ N-Channel MOSFET, STF7N105K5, 1050 V Vdss, 4 A Id, 2 Ohm Rds(on) at 10 V, TO-220-3 Full Pack through-hole package, -55 to 150 °C junction temperature.","salesMarkdown":"The STF7N105K5: The 1050 V Vdss rating suits offline flyback converters, PFC stages, and auxiliary power supplies running from rectified mains. The TO-220FP full-pack package isolates the tab from the heatsink, simplifying assembly in metal enclosures. That 2 Ohm figure at 10 Vgs is the number to use for conduction loss calculations in a hard-switched converter. ## Gate-drive voltage and threshold — a checklist for the first prototype The STF7N105K5 specifies a 10 V gate drive for the rated on-resistance, with a maximum gate-source voltage of ±30 V. The gate threshold voltage is 5 V maximum at 100 µA drain current. Input capacitance is 380 pF at 100 V Vds. Through-hole mounting in the TO-220-3 Full Pack package means the leads are designed for soldering into a PCB or wiring into a terminal block. The full-pack construction isolates the mounting hole from the drain, so no mica washer or sil-pad is needed when bolting to a chassis or heatsink — just thermal grease. That saves a BOM line and a manual assembly step. The base product number STF7 covers the family, and the K5 suffix denotes the 1050 V variant.","metaTitle":"STF7N105K5 N-Channel MOSFET, 1050 V, 4 A, TO-220FP","metaDescription":"STF7N105K5 N-Channel MOSFET from STMicroelectronics SuperMESH5 series, 1050 V Vdss, 4 A continuous drain, 2 Ohm Rds(on) at 10 V, TO-220FP package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH5™","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":"STF7","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"2Ohm @ 2A, 10V","Power Dissipation (Max)":"25W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"17 nC @ 10 V","Drain to Source Voltage (Vdss)":"1050 V","Input Capacitance (Ciss) (Max) @ Vds":"380 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"4A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b3299a3deb018abc81ad11c61e8b42a8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the VDS rating of STF7N105K5?","answer":"The drain-to-source voltage rating is 1050 V. This is the maximum voltage the MOSFET can block when turned off, making it suitable for offline converters operating from rectified 230 VAC mains with surge margin."},{"question":"What is the closest pin-compatible alternative to STF7N105K5?","answer":"Within the STF7 family, the base product number STF7 covers multiple voltage and current variants. The K5 suffix specifically denotes the 1050 V, 4 A version. For a different voltage or current rating within the same TO-220FP footprint, check the STF7 series variants — they share the same package and pinout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF7N105K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF7N105K5 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}}