{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF6NK70Z","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF6NK70Z","canonicalUrl":"https://icboms.com/stmicroelectronics/STF6NK70Z","factsUrl":"https://icboms.com/api/mcp/products/STF6NK70Z","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STF6NK70Z, SuperMESH N-Channel MOSFET, 700 V Vdss, 5 A Id, 1.8 Ohm Rds(on), 47 nC Qg, TO-220-3 Full Pack, Through Hole, -55 to 150 °C.","salesMarkdown":"## 700 V SuperMESH MOSFET in a full-pack TO-220 The 700 V Vdss gives a healthy margin for universal-input (85-265 VAC) flyback converters, where the reflected voltage plus leakage spike typically peaks around 600-650 V. The 30 W maximum power dissipation in the TO-220FP package is the real limiter — at 2.5 A the conduction loss alone is over 11 W, so the switching frequency and thermal interface to the heatsink need careful budgeting. The ±30 V maximum gate-source rating gives headroom for gate-drive overshoot in noisy environments, but a 12-15 V gate clamp is still good practice. Input capacitance is 930 pF typical at 25 V drain-source — moderate for a 700 V device, meaning the gate-driver sees a manageable load. New designs should not target this order code. ## Finding a replacement for the STF6NK70Z A functionally similar replacement would need to match the 700 V Vdss, 5 A Id, TO-220FP package, and SuperMESH or equivalent technology. Within ST's portfolio, look at the current SuperMESH 3 or MDmesh series in the same package — the STF7NK70Z or STF5NK70Z are close parametric matches but verify pin compatibility and gate charge differences before committing.","metaTitle":"STF6NK70Z N-Channel MOSFET, 700 V, 5 A, SuperMESH, TO-220FP","metaDescription":"STF6NK70Z N-channel 700 V, 5 A MOSFET in TO-220FP full-pack. SuperMESH series.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH™","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 @ 100µA","Base Product Number":"STF6N","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"1.8Ohm @ 2.5A, 10V","Power Dissipation (Max)":"30W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"47 nC @ 10 V","Drain to Source Voltage (Vdss)":"700 V","Input Capacitance (Ciss) (Max) @ Vds":"930 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/581721cf25e1c0e3c1727f1222b5c5a4.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is a replacement for the STF6NK70Z?","answer":"ST does not list an official successor. A functionally similar replacement should match the 700 V Vdss, 5 A Id, and TO-220FP package. Within ST's own portfolio, the STF7NK70Z or STF5NK70Z are close parametric matches — verify the gate charge and Rds(on) against your switching frequency and thermal budget before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF6NK70Z","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF6NK70Z 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}}