{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRF3808","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRF3808","canonicalUrl":"https://icboms.com/infineon/AUIRF3808","factsUrl":"https://icboms.com/api/mcp/products/AUIRF3808","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET® AUIRF3808 N-Channel MOSFET, Through Hole TO-220, 75 V, 140 A, 7 mOhm Rds(on), 330 W, -55 to 175 °C.","salesMarkdown":"## What the 7 mOhm Rds(on) means at the bench The AUIRF3808 is an N-channel HEXFET in a TO-220 through-hole package, rated for 75 V drain-source and 140 A continuous drain current. At 82 A the dissipation from Rds(on) alone is 47 W, which means the junction will climb fast unless the heatsink keeps the case below 100 °C. The 220 nC gate charge at 10 V tells you the driver must source about 2.2 A peak to switch the gate in 100 ns — a standard gate-driver IC with a 2 A sink/source rating is marginal here; budget a driver with at least 4 A peak capability for clean edges and to keep switching losses under control. ## Automotive temperature grade and where it fits The junction temperature range spans -55 to 175 °C, which is the full automotive Grade 0 band (AEC-Q101 equivalent). That means the part survives under-hood ambient peaks of 125 °C with the junction rising another 50 °C from self-heating — typical for an engine-cooling fan drive or an electric oil-pump inverter where the heatsink is shared with the engine block. The 330 W power dissipation rating is the theoretical maximum at a case temperature of 25 °C — in a real 85 °C under-hood environment, derate by the junction-to-case thermal resistance (typically 0.45 °C/W for a TO-220) so the practical continuous dissipation is closer to 200 W before the junction hits 175 °C. ## Active lifecycle and sourcing posture Sourcing is straightforward through authorized distribution channels; we quote it against your BOM quantity with confirmed lead time at RFQ. The HEXFET series has a long production history, so date-code spread across multiple lots is common. If your board requires a single date code for traceability, flag that at quote time — we can often consolidate from one production batch.","metaTitle":"AUIRF3808 N-Channel MOSFET, 75V 140A, TO-220","metaDescription":"AUIRF3808 automotive HEXFET N-channel MOSFET, 75V, 140A, 7mOhm Rds(on) at 10V. Active production, TO-220 package. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"series":"HEXFET®","power_w":"330.0","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Through Hole","capacitance_uf":"0.0053","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"75.0","Vgs(Th) (Max) @ Id":"4 V @ 250µA","switching_current_a":"140.0","Rds On (Max) @ Id, Vgs":"7mOhm @ 82 A, 10 V","Operating Temperature High":"-55°C to 175°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"220 nC @ 10 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.84","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/779635d83b0aac30398aa3667b1edf68.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to AUIRF3808?","answer":"No official pin-compatible second source or direct cross-reference is listed in the manufacturer's documentation. The AUIRF3808 is a unique Infineon order code in the HEXFET family; if you need an alternate, a parametric search for N-channel, 75 V, 140 A in a TO-220 package would yield candidates, but pinout and gate-drive requirements must be verified against your specific layout."},{"question":"What compliance documentation does AUIRF3808 carry?","answer":"The part is listed as an automotive-grade component (AUTOMOTIVE HEXFET). Standard compliance includes RoHS and REACH as part of Infineon's current production."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRF3808","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRF3808 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}}