{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRFS8403TRR","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRFS8403TRR","canonicalUrl":"https://icboms.com/infineon/AUIRFS8403TRR","factsUrl":"https://icboms.com/api/mcp/products/AUIRFS8403TRR","rawCanonicalId":null},"summary":{"shortDescription":"Infineon AUIRFS8403TRR, Automotive AEC-Q101 HEXFET®, N-Channel MOSFET, 40 V, 123 A, 3.3 mOhm Rds(on) @ 70 A, 10 V, 93 nC gate charge, D2PAK (TO-263), -55°C to 175°C junction.","salesMarkdown":"## Gate charge and switching — 93 nC at 10 V Total gate charge is 93 nC at 10 V. That is a moderate figure for a 40 V die in D2PAK — not a high-speed switching part, but adequate for PWM in the tens of kHz range. The gate driver must source that charge fast enough to keep switching losses in check; a weak driver will stretch the Miller plateau and burn extra dissipation in the transition edge. ## Lifecycle and sourcing reality The AUIRFS8403TRR is listed as Active — no EOL notice, no last-time-buy clock. That means it can be specified into new designs without an obsolescence risk.","metaTitle":"AUIRFS8403TRR MOSFET N-CH 40V 123A D2PAK, AEC-Q101, Active","metaDescription":"Infineon AUIRFS8403TRR N-channel 40V 123A MOSFET in D2PAK. Rds(on) 3.3mOhm at 70A, 10V. AEC-Q101 qualified, 175°C junction. Active lifecycle.","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":"99.0","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Surface Mount","capacitance_uf":"0.0032","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"40.0","Vgs(Th) (Max) @ Id":"3.9 V @ 100µA","switching_current_a":"123.0","Rds On (Max) @ Id, Vgs":"3.3mOhm @ 70 A, 10 V","Operating Temperature High":"-55°C to 175°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"93 nC @ 10 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.33","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/l2ebhnxduq/IRSDS18668-1.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"What is the Rds(on) of AUIRFS8403TRR?","answer":"The maximum on-resistance is 3.3 mOhm at 70 A drain current with a 10 V gate drive. That is the conduction-loss number for heatsink and PCB copper sizing."},{"question":"What is the gate charge of AUIRFS8403TRR?","answer":"This drives the gate driver requirement — a driver that can source that charge fast enough keeps switching losses manageable in the tens-of-kHz range."},{"question":"Can AUIRFS8403TRR replace IRFS8403TRR?","answer":"The AUIRFS8403TRR is the automotive-qualified (AEC-Q101) version of the IRFS8403TRR. Electrically they share the same 40 V, 123 A, 3.3 mOhm ratings and D2PAK footprint. The AUIRFS8403TRR adds the automotive stress-test qualification, so it is the drop-in replacement for designs that need automotive grade."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRFS8403TRR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRFS8403TRR 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}}