{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRL1404S","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRL1404S","canonicalUrl":"https://icboms.com/infineon/AUIRL1404S","factsUrl":"https://icboms.com/api/mcp/products/AUIRL1404S","rawCanonicalId":null},"summary":{"shortDescription":"Infineon Technologies HEXFET® series, N-Channel Power MOSFET, AUIRL1404S, 160 A, 40 V, 4 mOhm Rds(on), Surface Mount, Bulk.","salesMarkdown":"## 4 mOhm Rds(on) at 95 A — the conduction-loss anchor The AUIRL1404S is an N-channel HEXFET power MOSFET from Infineon Technologies, rated for 160 A pulsed drain current at a 40 V drain-source breakdown voltage. The 4 mOhm value is specified at 95 A, not the 160 A peak — the buyer's steady-state current should be sized against the Rds(on) at the operating current and junction temperature, not the pulsed maximum. At 175 °C junction, the on-resistance roughly doubles from the 25 °C figure, so a 50 A continuous load sees about 8 mOhm hot and dissipates 20 W — well within the 3.8 W package limit only if the PCB copper and airflow handle the thermal resistance. ## 175 °C junction — the full automotive temperature envelope Rated for -55 to 175 °C junction temperature, the AUIRL1404S covers the engine-bay temperature band that AEC-Q101-qualified parts serve. A 105 °C ambient under-hood environment leaves 70 °C of junction-to-ambient margin for self-heating — enough for a 20-30 A continuous load with a moderate heatsink or a large copper pour on the PCB. But the peak current during the Miller plateau determines the switching time — a driver with 2 A peak capability turns the FET on in roughly 70 ns, keeping switching losses low.","metaTitle":"Infineon AUIRL1404S N-Channel HEXFET, 40V, 4mOhm","metaDescription":"Infineon AUIRL1404S N-channel HEXFET power MOSFET, 160A, 40V, 4 mOhm Rds(on) at 95A. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Vgs":"±20 V","series":"HEXFET®","power_w":"3.8","Fet Type":"N-Channel","package_type":"Bulk","mounting_type":"Surface Mount","capacitance_uf":"0.0066","product_status":"Active","lifecycle_stage":"eol_hot","supply_voltage_v":"40.0","Vgs(Th) (Max) @ Id":"3 V @ 250µA","switching_current_a":"160.0","Rds On (Max) @ Id, Vgs":"4mOhm @ 95 A, 10 V","Operating Temperature High":"-55°C to 175°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"140 nC @ 5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.79","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d9f10e5ab8238de7ab8751fae3ffcde8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to AUIRL1404S?","answer":"The AUIRL1404S is a unique order code in the HEXFET family — any functional replacement would require a board spin to match the package footprint and pinout. Confirm the BOM position before committing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRL1404S","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRL1404S 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}}