{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRF135S203","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRF135S203","canonicalUrl":"https://icboms.com/infineon/IRF135S203","factsUrl":"https://icboms.com/api/mcp/products/IRF135S203","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET® StrongIRFET™ IRF135S203, N-Channel MOSFET, 135 Vdss, 129 A Id, 8.4 mOhm Rds(on) at 77 A, 270 nC Qg, TO-263-3 D²Pak, -55°C to 175°C.","salesMarkdown":"## Gate charge and driver budget Total gate charge is 270 nC at 10 V — a standard MCU GPIO or a 0.5 A gate driver will struggle to switch this FET at any useful frequency. Plan for a dedicated gate driver capable of 2 A peak source/sink to keep the switching edges clean and the cross-conduction interval short. The input capacitance of 9700 pF at 50 V Vds confirms the driver needs to deliver a stiff gate voltage slew rate. ## Package reality — rework and thermal management The TO-263-3 (D²Pak) is a surface-mount package with an exposed drain tab. The large copper pad on the bottom soaks heat fast — a standard hot-air station without bottom preheat will struggle to lift this part without cooking the board. Use a preheat plate at 150 °C and a wide-tip soldering iron for the tab solder joint. Orientation is marked by a bevel on the top edge — find pin 1 before the hot air goes on. ## Temperature range and production status Junction temperature range is -55 °C to 175 °C — wide enough for industrial motor drives, power supplies, and automotive under-hood environments (though not formally AEC-Q qualified in the listed specs).","metaTitle":"IRF135S203 MOSFET N-CH 135V 129A TO263-3, 8.4 mOhm Rds(on)","metaDescription":"Infineon IRF135S203 N-channel StrongIRFET MOSFET, 135 Vdss, 129 A Id, 8.4 mOhm Rds(on) at 77 A. 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":"Tape & Reel (TR); Cut Tape (CT)","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4V @ 250µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"8.4mOhm @ 77A, 10V","Power Dissipation (Max)":"441W (Tc)","Supplier Device Package":"PG-TO263-3-2","Gate Charge (Qg) (Max) @ Vgs":"270 nC @ 10 V","Drain to Source Voltage (Vdss)":"135 V","Input Capacitance (Ciss) (Max) @ Vds":"9700 pF @ 50 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"129A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.42","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.42000","currency":"USD"},{"qty":10,"price":"$3.07500","currency":"USD"},{"qty":100,"price":"$2.47170","currency":"USD"},{"qty":800,"price":"$2.03070","currency":"USD"},{"qty":1600,"price":"$1.69225","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c6165280ff697913e18cbb4d1b7898bf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the Rds(on) of IRF135S203?","answer":"Maximum on-resistance is 8.4 mOhm at 77 A drain current with 10 V gate-to-source drive. This is the value to use for worst-case conduction loss calculations at 25 °C junction; the actual Rds(on) increases with temperature per the normalised curve in the datasheet."},{"question":"What is the gate charge of IRF135S203?","answer":"Total gate charge is 270 nC maximum at 10 V gate drive. This is the charge the gate driver must deliver each switching cycle — at 50 kHz switching frequency the average gate drive current is 13.5 mA, but the peak current requirement is much higher for fast rise/fall times."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRF135S203","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRF135S203 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}}