{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF3LN62K3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF3LN62K3","canonicalUrl":"https://icboms.com/stmicroelectronics/STF3LN62K3","factsUrl":"https://icboms.com/api/mcp/products/STF3LN62K3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH3™ N-channel MOSFET, STF3LN62K3, 620 V Vdss, 2.5 A continuous drain, 3 Ohm Rds(on) at 10 V, TO-220FP full-pack through-hole package, 150 °C junction temperature.","salesMarkdown":"## 620 V N-channel in a full-pack — what the ratings tell you The STF3LN62K3 is an N-channel MOSFET from ST's SuperMESH3™ series, built for offline switched-mode power supplies and auxiliary converters where the DC bus sits at 400 V or below. The 620 V drain-source breakdown gives you about 220 V of headroom above a typical 400 V bus — enough to handle flyback leakage spikes without avalanche stress eating into the reliability margin. That 3 Ohm figure is the conduction loss floor at rated current — at 1.25 A the dissipation is about 4.7 W, which the TO-220FP full-pack can sink into a heatsink up to its 20 W limit. ## Gate drive and switching — the numbers that matter for the driver stage Total gate charge is 17 nC at 10 V Vgs, which means a typical gate driver delivering 1 A peak can switch this MOSFET in under 20 ns — fast enough for a 100 kHz flyback without excessive cross-conduction. Input capacitance is 386 pF at 50 V drain, a light load on the driver's output stage. Gate threshold voltage is 4.5 V maximum at 50 µA drain current, so a 5 V logic-level gate drive will barely turn it on; the recommended drive voltage for minimum Rds(on) is 10 V. If your controller only puts out 5 V, you'll need a gate-driver IC or a bootstrap charge pump to get the gate above 8 V.","metaTitle":"STF3LN62K3 N-Channel MOSFET, 620 V, 2.5 A, SuperMESH3","metaDescription":"STF3LN62K3 N-channel MOSFET from STMicroelectronics SuperMESH3 series. 620 V Vdss, 2.5 A continuous drain, 3 Ohm Rds(on).","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH3™","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":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4.5V @ 50µA","Base Product Number":"STF3LN","Operating Temperature":"150°C (TJ)","Rds On (Max) @ Id, Vgs":"3Ohm @ 1.25A, 10V","Power Dissipation (Max)":"20W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"17 nC @ 10 V","Drain to Source Voltage (Vdss)":"620 V","Input Capacitance (Ciss) (Max) @ Vds":"386 pF @ 50 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"2.5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/55d3efde9139979291c7d2449c4cd7ae.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF3LN62K3/alternatives.json"},"ai":{"faq":[{"question":"Is STF3LN62K3 compatible with a TO-220 package?","answer":"Yes, the STF3LN62K3 is in a TO-220 Full Pack (TO-220FP) package, which is a fully molded through-hole package with an isolated tab. It fits the standard TO-220 footprint and lead spacing, but the full-pack body is slightly thicker than a standard TO-220 — verify the heatsink mounting hole alignment and the insulator clearance before committing the board."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF3LN62K3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF3LN62K3 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}}