{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AUIRFS8408","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"AUIRFS8408","canonicalUrl":"https://icboms.com/infineon/AUIRFS8408","factsUrl":"https://icboms.com/api/mcp/products/AUIRFS8408","rawCanonicalId":null},"summary":{"shortDescription":"Infineon AUIRFS8408, automotive N-channel HEXFET MOSFET, 40 V, 195 A switching current, 1.6 mOhm Rds(on) max at 10 V, 324 nC gate charge, -55°C to 175°C junction temperature, surface mount.","salesMarkdown":"## 40 V N-channel HEXFET for automotive power switching The AUIRFS8408: It is designed for high-current switching applications such as electric power steering, engine cooling fans, and DC-DC converters in 12 V and 24 V vehicle electrical systems. ## On-resistance and gate charge — sizing the driver The 1.6 mOhm Rds(on) at 10 V is the conduction-loss floor at 25°C junction; actual resistance rises with temperature per the normalised curve, so the thermal budget must account for the hot Rds(on) at the operating current. The total gate charge of 324 nC at 10 V determines the gate-driver current needed for the target switching frequency — a 324 nC gate switched at 50 kHz draws about 16 mA from the driver, well within the capability of a standard automotive gate-driver IC. ## Junction temperature range and automotive qualification The 175°C TJ max provides headroom for fault conditions like stalled-motor current or short-circuit events before the silicon reaches its absolute limit. ## Lifecycle and procurement posture The field lists IRFS8408 as a direct cross-reference, which can simplify dual-sourcing or replacement searches.","metaTitle":"AUIRFS8408 N-Channel HEXFET, 40 V, 1.6 mOhm, -55 to 175°C","metaDescription":"AUIRFS8408 automotive N-channel HEXFET MOSFET, 40 V, 195 A switching, 1.6 mOhm Rds(on) at 10 V. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Vgs":"±20 V","series":"HEXFET®","has_mpn":"IRFS8408","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":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/AUIRFS8408","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/AUIRFS8408 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}}