{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STFI7LN80K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STFI7LN80K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STFI7LN80K5","factsUrl":"https://icboms.com/api/mcp/products/STFI7LN80K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh N-Channel MOSFET, 800 V drain-to-source voltage, 5 A continuous drain current, 1.15 Ω Rds(on) at 10 V gate drive, 12 nC gate charge, TO-262-3 full-pack (I2PAKFP) through-hole package, -55°C to 150°C junction temperature.","salesMarkdown":"The STFI7LN80K5: The 12 nC gate charge and 270 pF input capacitance at 100 V drain bias are low for an 800 V device, making it suited for hard-switching topologies like flyback and PFC converters in AC-DC power supplies, LED lighting drivers, and auxiliary power stages in industrial equipment. STMicroelectronics has discontinued this specific MDmesh MOSFET variant, so it is no longer available through the authorized factory channel. For a BOM line already qualified to this part, the supply path is the independent distribution market — surplus inventory, overstock, or last-time-buy remnants. There is no official successor part recorded in the lifecycle data, so a replacement search should focus on pin-compatible 800 V N-channel MOSFETs in the TO-262 full-pack footprint from ST or other vendors. The date-code trace and marking consistency become critical when sourcing from the open market — the laser-etched marking on the TO-262 tab is the first check against re-marked or relabeled stock. ## Ratings that drive the design decision The 800 V Vdss gives 30% to 40% derating margin in a 400 V DC bus (typical PFC output), which is comfortable for flyback and two-switch forward converters. The 1.15 Ω Rds(on) at 10 V gate drive is moderate — expect conduction losses around 6 W at 5 A, which the 25 W package power dissipation can handle with adequate heatsinking.","metaTitle":"STFI7LN80K5 STMicroelectronics N-Channel MOSFET, 800V, 5A","metaDescription":"STFI7LN80K5 MDmesh N-channel MOSFET, 800V Vdss, 5A continuous drain, 1.15Ω Rds(on), TO-262 full-pack. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±30V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-262-3 Full Pack, I²Pak","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"5V @ 100µA","Base Product Number":"STFI7","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"1.15Ohm @ 2.5A, 10V","Power Dissipation (Max)":"25W (Tc)","Supplier Device Package":"I2PAKFP (TO-281)","Gate Charge (Qg) (Max) @ Vgs":"12 nC @ 10 V","Drain to Source Voltage (Vdss)":"800 V","Input Capacitance (Ciss) (Max) @ Vds":"270 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/81b2d1d21458ef6bed9c5241a3d92d89.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STFI7LN80K5/alternatives.json"},"ai":{"faq":[{"question":"Is STFI7LN80K5 obsolete and what is its lifecycle status?","answer":"Yes, the STFI7LN80K5 is listed as Obsolete. STMicroelectronics has discontinued production, so new orders are fulfilled through independent distribution channels from existing surplus or last-time-buy inventory. There is no official successor listed in the lifecycle data."},{"question":"What package does STFI7LN80K5 use and is it compatible with TO-262?","answer":"It uses a TO-262-3 Full Pack, I²Pak package, with the supplier device package listed as I2PAKFP (TO-281). The full-pack variant has a fully isolated tab — no insulating pad is needed against the heatsink. It is mechanically compatible with standard TO-262 footprints, but the full-pack body is thicker; verify heatsink mounting hole alignment and clearance before committing the board layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STFI7LN80K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STFI7LN80K5 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:16:03.596Z","lastPublished":"2026-07-16T15:16:03.596Z","indexable":true}}