{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BUK752R3-40E,127","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"BUK752R3-40E127","canonicalUrl":"https://icboms.com/nxp/BUK752R3-40E127","factsUrl":"https://icboms.com/api/mcp/products/BUK752R3-40E%2C127","rawCanonicalId":null},"summary":{"shortDescription":"Nexperia BUK752R3-40E,127, Automotive AEC-Q101 TrenchMOS N-Channel MOSFET, 40 V Vdss, 120 A Id, 2.3 mΩ Rds(on) at 10 V, TO-220AB through-hole, -55°C to 175°C.","salesMarkdown":"## What this 40 V TrenchMOS part is for The Nexperia BUK752R3-40E,127 is an N-channel TrenchMOS MOSFET from the automotive-grade AEC-Q101 series. It is designed for high-current switching in 12 V and 24 V automotive loads — think engine control units, electric power steering, DC-DC converters, and motor bridge drives where the bus sees transients up to 40 V. The TO-220AB through-hole package suits it for power stages that need a bolt-down tab for heat sinking. The on-resistance is specified at 2.3 mΩ maximum with a 25 A drain current and 10 V gate drive. That is a low figure for a 40 V device in a TO-220, so at 25 A the conduction loss is roughly 1.44 W — manageable with a decent heatsink. The test condition matters: the 10 V gate drive is typical for automotive gate drivers, but if your design runs the gate at 5 V logic levels, expect the Rds(on) to roughly double from the 4.2 mΩ region at 4.5 V that similar TrenchMOS parts show. Plan the gate drive rail accordingly. ## 109.2 nC gate charge — sizing the driver Total gate charge at 10 V is 109.2 nC. That is a moderate figure — a typical automotive gate driver with 2 A peak source/sink can switch this FET in the 50-100 ns range, which keeps switching losses in check for PWM frequencies up to 20-50 kHz. The input capacitance is 8500 pF at 25 V drain bias, so the driver sees a capacitive load that needs a clean layout with short gate-loop traces to avoid ringing. ## 120 A continuous drain and 293 W dissipation — thermal reality The 120 A continuous drain rating at 25°C case temperature is the silicon limit, not a practical number without aggressive cooling. The 293 W power dissipation figure is likewise a theoretical maximum with the case held at 25°C. In a real engine-bay environment at 85°C ambient, derate heavily — a TO-220AB bolted to a decent heatsink might handle 30-50 A continuous before the junction hits the 175°C limit. The -55°C to 175°C junction range covers cold cranking and under-hood heat soak. ## Lifecycle and sourcing posture The AEC-Q101 qualification means it is production-released for automotive supply chains with the usual PPAP documentation available.","metaTitle":"Nexperia BUK752R3-40E,127 N-Channel MOSFET","metaDescription":"Nexperia BUK752R3-40E,127 automotive AEC-Q101 TrenchMOS N-channel MOSFET, 40V Vdss, 120A Id, 2.3mΩ Rds(on) at 10V.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q101, TrenchMOS™","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"Automotive, AEC-Q101, TrenchMOS™","Package":"Bulk","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Through Hole","Package / Case":"TO-220-3","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 1mA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"2.3mOhm @ 25A, 10V","Power Dissipation (Max)":"293W (Ta)","Supplier Device Package":"TO-220AB","Gate Charge (Qg) (Max) @ Vgs":"109.2 nC @ 10 V","Drain to Source Voltage (Vdss)":"40 V","Input Capacitance (Ciss) (Max) @ Vds":"8500 pF @ 25 V","Current - Continuous Drain (Id) @ 25°C":"120A (Ta)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.83","stockQuantity":0,"priceTiers":[{"qty":361,"price":"$0.83000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e185432e791f74d5df127753a126439d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BUK752R3-40E,127 automotive grade (AEC-Q101)?","answer":"Yes, it is part of the Automotive, AEC-Q101 qualified TrenchMOS series, making it suitable for automotive applications requiring the AEC-Q101 stress qualification."},{"question":"What is the maximum gate charge of BUK752R3-40E,127?","answer":"The maximum total gate charge is 109.2 nC at a 10 V gate drive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/BUK752R3-40E127","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/BUK752R3-40E127 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}}