{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFSL7440PBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFSL7440PBF","canonicalUrl":"https://icboms.com/infineon/IRFSL7440PBF","factsUrl":"https://icboms.com/api/mcp/products/IRFSL7440PBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon IRFSL7440PBF, HEXFET® StrongIRFET™ N-Channel MOSFET, 40 V Vdss, 120 A Id, 2.5 mOhm Rds(on), TO-262-3 (I²Pak) through-hole, -55°C to 175°C.","salesMarkdown":"## 2.5 mOhm at 100 A — conduction loss floor for a 40 V rail The 2.5 mOhm maximum on-resistance at 100 A, 10 V gate drive sets the conduction loss floor for a high-current switch — at 100 A the dissipation is 25 W, which the 208 W package rating can handle with adequate heatsinking. ## Gate charge and drive budget Total gate charge is 135 nC at 10 V. For a 100 kHz switching frequency, the average gate-drive current needed is 13.5 mA — well within a standard gate-driver IC's capability. The input capacitance (Ciss) is 4730 pF at 25 V drain-source, which influences the drive's rise/fall time and switching loss. ## Through-hole TO-262 — thermal and mechanical fit The TO-262-3 (I²Pak, TO-262AA) package has long leads for through-hole mounting. The junction-to-case thermal resistance is not listed here, but the 208 W dissipation rating at 25°C case implies a low RthJC, typical for this package class. ## Temperature range and operating environment This makes the part suitable for high-reliability and harsh-environment applications such as automotive under-hood, industrial motor drives, and power converters where ambient temperatures exceed 85°C. The 175°C maximum junction allows headroom for high-current operation with thermal cycling. ## Lifecycle and compliance ROHS3 compliant (lead-free). The series is HEXFET and StrongIRFET, both established Infineon power MOSFET families with broad distribution support.","metaTitle":"IRFSL7440PBF N-Channel MOSFET, 40 V, 120 A, 2.5 mOhm, TO-262","metaDescription":"IRFSL7440PBF HEXFET N-channel MOSFET, 40 V, 120 A, 2.5 mOhm Rds(on) at 10 V, TO-262 package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"HEXFET®, StrongIRFET™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"HEXFET®, StrongIRFET™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Through Hole","Package / Case":"TO-262-3 Long Leads, I²Pak, TO-262AA","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"3.9V @ 100µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"2.5mOhm @ 100A, 10V","Power Dissipation (Max)":"208W (Tc)","Supplier Device Package":"TO-262","Gate Charge (Qg) (Max) @ Vgs":"135 nC @ 10 V","Drain to Source Voltage (Vdss)":"40 V","Input Capacitance (Ciss) (Max) @ Vds":"4730 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"6V, 10V","Current - Continuous Drain (Id) @ 25°C":"120A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.63","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.63000","currency":"USD"},{"qty":10,"price":"$1.35200","currency":"USD"},{"qty":100,"price":"$1.07630","currency":"USD"},{"qty":500,"price":"$0.91074","currency":"USD"},{"qty":1000,"price":"$0.77275","currency":"USD"},{"qty":2000,"price":"$0.73412","currency":"USD"},{"qty":5000,"price":"$0.70652","currency":"USD"},{"qty":10000,"price":"$0.68313","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c7c54fa641ef19b74cd8fbd06af02dbb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the gate charge of IRFSL7440PBF?","answer":"Total gate charge (Qg) is 135 nC at 10 V gate drive. This figure is used to size the gate-driver output current for the target switching frequency."},{"question":"Is IRFSL7440PBF lead-free?","answer":"Yes, it is ROHS3 compliant, meaning it meets the lead-free and restricted-substance requirements of the ROHS directive."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFSL7440PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFSL7440PBF 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}}