{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRFS8403TRL","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRFS8403TRL","canonicalUrl":"https://icboms.com/infineon/AUIRFS8403TRL","factsUrl":"https://icboms.com/api/mcp/products/AUIRFS8403TRL","rawCanonicalId":null},"summary":{"shortDescription":"Infineon AUIRFS8403TRL, N-Channel HEXFET® MOSFET, 40 V, 123 A, 3.3 mOhm at 70 A, 10 V, 93 nC gate charge, -55 to 175 °C, D2PAK (TO-263), Surface Mount.","salesMarkdown":"## 40 V N-Channel HEXFET® — what the ratings mean for your switching design The AUIRFS8403TRL is an Infineon N-Channel HEXFET® power MOSFET rated for a 40 V drain-source breakdown and a continuous drain current of 123 A. The low on-resistance of 3.3 mOhm (max) at 70 A and 10 V gate drive keeps conduction losses down in high-current switching stages — think DC-DC converters, motor drives, and battery management in automotive or industrial power trains. The total gate charge of 93 nC at 10 V is moderate for a device this size; your gate driver needs to source that charge fast enough to keep switching edges clean, especially if you are pushing frequency above 100 kHz. ## Temperature range and environment Rated for junction temperatures from -55°C to 175°C, this MOSFET is built for under-hood automotive and high-ambient industrial enclosures. ## Sourcing and lifecycle That means no last-time-buy pressure and no forced redesign for the foreseeable future. For a BOM freeze or a new design-in, this part is a clean choice from a supply perspective.","metaTitle":"AUIRFS8403TRL N-Channel MOSFET, 40 V, 3.3 mOhm, D2PAK","metaDescription":"Infineon AUIRFS8403TRL N-Channel HEXFET MOSFET, 40 V, 123 A switching, 3.3 mOhm Rds(on) at 70 A, 10 V. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Vgs":"±20 V","series":"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":"$1.18","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/513a5fd8740ff61de6e698bd52715e09.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRFS8403TRL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRFS8403TRL 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}}