{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRF6797MTRPBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRF6797MTRPBF","canonicalUrl":"https://icboms.com/infineon/IRF6797MTRPBF","factsUrl":"https://icboms.com/api/mcp/products/IRF6797MTRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies HEXFET® series N-Channel MOSFET, DirectFET package, 25 V drain-source, 36 A switching current, 1.4 mOhm max Rds(on) at 10 V, surface mount, bulk.","salesMarkdown":"## What the 1.4 mOhm Rds(on) buys you in a 25 V DirectFET The IRF6797MTRPBF: The headline number here is the 1.4 mOhm max on-resistance measured at 38 A with a 10 V gate drive. ## Gate drive and switching loss — the 68 nC number that matters Total gate charge is 68 nC at 4.5 V, which is the figure a designer uses to size the gate-drive circuit. A 4.5 V drive is comfortably above the 2.35 V max threshold, so a 5 V logic signal from a microcontroller or a gate-driver IC turns the FET fully on. The 68 nC Qg means the driver needs to source and sink that charge each switching cycle; at 500 kHz the average gate current is 34 mA, well within a standard driver's capability. The ±20 V Vgs rating gives headroom for ringing on the gate node — a common failure mode in hard-switching converters where the Miller plateau couples a voltage spike back onto the gate. That 20 V ceiling means the part survives moderate overshoot without needing a clamp Zener on the gate. ## Thermal reality for a DirectFET in a confined power supply The DirectFET package dissipates heat through the top-side can, not a bottom-side pad — the PCB layout needs a copper plane on the top layer to pull heat off the can, and the 2.8 W power dissipation figure assumes that plane is present. Without it the junction temperature rises fast under continuous load. The 0.0058 µF output capacitance (Coss) is low for a 25 V FET at this current rating, which helps in resonant or ZVS topologies where the FET's own capacitance forms part of the tank. In a hard-switching buck the Coss contributes to switching loss at the turn-on transition, but the low Rds(on) usually more than compensates at moderate frequencies.","metaTitle":"Infineon IRF6797MTRPBF N-Channel MOSFET, 25 V, 1.4 mOhm","metaDescription":"Infineon IRF6797MTRPBF N-Channel HEXFET MOSFET, 25 V, 36 A switching, 1.4 mOhm Rds(on). Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Vgs":"±20 V","series":"HEXFET®","power_w":"2.8","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Surface Mount","capacitance_uf":"0.0058","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"25.0","Vgs(Th) (Max) @ Id":"2.35 V @ 150µA","switching_current_a":"36.0","Rds On (Max) @ Id, Vgs":"1.4mOhm @ 38 A, 10 V","Operating Temperature High":"-40°C to 150°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"68 nC @ 4.5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.15","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8bd90282779356a6e6cdaa9e7edcfb69.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the IRF6797MTRPBF's Rds(on) and how is it specified?","answer":"The maximum Rds(on) is 1.4 mOhm, tested at a drain current of 38 A with a 10 V gate-source voltage. This is the on-resistance at the rated drive condition — actual Rds(on) increases with junction temperature per the normalised curve in the datasheet."},{"question":"What gate voltage does the IRF6797MTRPBF need to turn on fully?","answer":"The maximum gate threshold voltage is 2.35 V at 150 µA drain current. A 4.5 V gate drive (as used for the Qg specification) is sufficient to saturate the FET. The absolute maximum gate-source voltage is ±20 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRF6797MTRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRF6797MTRPBF 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}}