{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRFS8408TRR","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRFS8408TRR","canonicalUrl":"https://icboms.com/infineon/AUIRFS8408TRR","factsUrl":"https://icboms.com/api/mcp/products/AUIRFS8408TRR","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET series, N-Channel MOSFET, 40 V drain-source, 195 A continuous drain, 1.6 mOhm Rds(on) at 10 V, 324 nC gate charge, D2PAK (TO-263) surface mount, -55°C to 175°C junction temperature, AEC-Q101 qualified.","salesMarkdown":"## 40 V, 1.6 mOhm — the load-switch and motor-drive FET The Infineon AUIRFS8408TRR is an N-channel HEXFET power MOSFET in a D2PAK (TO-263) surface-mount package, rated for 40 V drain-source and 195 A continuous drain current. The headline figure is the 1.6 mOhm maximum on-resistance at 100 A with 10 V gate drive — this is the conduction-loss floor that determines the copper pour area on the PCB and the heatsinking needed to stay inside the 175°C junction temperature rating. Part of the Automotive HEXFET series, it carries AEC-Q101 qualification. Gate charge Qg is 324 nC at 10 V. ## 175°C junction — the under-hood enabler Rated junction temperature spans -55°C to 175°C.","metaTitle":"AUIRFS8408TRR MOSFET N-CH 40V 195A D2PAK, AEC-Q101","metaDescription":"Infineon AUIRFS8408TRR N-channel 40V 195A HEXFET in D2PAK. 1.6mOhm Rds(on) at 10V, 175°C TJ, AEC-Q101.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Vgs":"±20 V","series":"Automotive, AEC-Q101, HEXFET®","power_w":"294.0","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Surface Mount","capacitance_uf":"0.0108","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"40.0","Vgs(Th) (Max) @ Id":"3.9 V @ 250µA","switching_current_a":"195.0","Rds On (Max) @ Id, Vgs":"1.6mOhm @ 100 A, 10 V","Operating Temperature High":"-55°C to 175°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"324 nC @ 10 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.29","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6db7ea7d72e2c85d85debe52a542a98f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the AUIRFS8408TRR obsolete or end of life?","answer":"No."},{"question":"Is the AUIRFS8408TRR suitable for automotive applications?","answer":"Yes. It is part of the Automotive HEXFET series and is AEC-Q101 qualified, which is the standard stress qualification for automotive-grade discrete semiconductors. The 175°C junction rating covers under-hood and transmission environments."},{"question":"What is the maximum drain current of the AUIRFS8408TRR?","answer":"The continuous drain current is rated at 195 A. This is a package-limited figure at 25°C case temperature; actual usable current in a 125°C ambient with limited copper area will be lower and must be calculated from the thermal resistance and the Rds(on) temperature multiplier."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRFS8408TRR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRFS8408TRR 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}}