{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRFU8403","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRFU8403","canonicalUrl":"https://icboms.com/infineon/AUIRFU8403","factsUrl":"https://icboms.com/api/mcp/products/AUIRFU8403","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET® AUIRFU8403, N-Channel MOSFET, 40 V, 100 A, 3.1 mOhm Rds(on) at 76 A, 10 V, 99 nC gate charge, -55 to 175 °C Tj, I-PAK through-hole package.","salesMarkdown":"## 40 V, 100 A N-channel HEXFET — conduction loss and switching profile The AUIRFU8403 is an Infineon HEXFET N-channel power MOSFET rated for 40 V drain-source and 100 A continuous drain current. ## 175 °C junction — where this part lives This matters for designs that see sustained high ambient temperatures — motor drives, engine bay electronics, or industrial power supplies where the heatsink is shared with other hot components. ## Gate charge and drive budget Total gate charge is 99 nC at Vgs = 10 V. For a 100 A-rated device this is a moderate figure — it means the gate driver needs to supply about 99 nC per switching cycle.","metaTitle":"AUIRFU8403 MOSFET N-CH 40V 100A I-PAK, 3.1mOhm Rds(on)","metaDescription":"AUIRFU8403 N-channel HEXFET power MOSFET, 40V, 100A, 3.1mOhm Rds(on) at 76A, 10V. 175°C Tj max. Active production.","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":"Through Hole","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":"100.0","Rds On (Max) @ Id, Vgs":"3.1mOhm @ 76 A, 10 V","Operating Temperature High":"-55°C to 175°C(TJ)","Gate Charge (Qg) (Max) @ Vgs":"99 nC @ 10 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.89","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/AUIRFU8403/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of AUIRFU8403 at rated current?","answer":"Maximum on-resistance is 3.1 mOhm at Id = 76 A with Vgs = 10 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRFU8403","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRFU8403 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}}