{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRF135B203","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRF135B203","canonicalUrl":"https://icboms.com/infineon/IRF135B203","factsUrl":"https://icboms.com/api/mcp/products/IRF135B203","rawCanonicalId":null},"summary":{"shortDescription":"Infineon StrongIRFET™, N-Channel MOSFET, IRF135B203, 135 V drain-source, 129 A continuous drain, 8.4 mOhm Rds(on) at 77 A, 10 V gate drive, 270 nC gate charge, TO-220-3, -55 to 175 °C.","salesMarkdown":"## Thermal and temperature range — where it fits The 441 W maximum power dissipation at case temperature is a theoretical ceiling; real-world dissipation is limited by the heatsink and ambient. The TO-220-3 through-hole package allows a large clip-on or bolt-down heatsink, which is the practical path to extracting the full current rating. ## Gate drive and switching considerations The 10 V drive voltage for minimum Rds(on) is typical for standard gate-drive ICs. The 270 nC total gate charge at 10 V and 9700 pF input capacitance at 50 V drain-source mean the gate driver sees a significant capacitive load. At 100 kHz switching frequency, the average gate-drive current is 27 mA — within the capability of most half-bridge drivers, but the peak current during the Miller plateau determines the switching time. A gate resistor in the 5–15 Ohm range controls ringing without slowing the edge too much. ## Lifecycle and sourcing posture The ROHS3 compliance means it meets the latest RoHS exemption-free requirements.","metaTitle":"IRF135B203 N-Channel MOSFET, 135V 129A TO-220-3 StrongIRFET™","metaDescription":"IRF135B203 N-channel MOSFET, 135 V drain-source, 129 A continuous drain, 8.4 mOhm Rds(on) at 77 A. Active production, TO-220-3, -55 to 175 °C.","metaKeywords":null},"attributes":{"series":"StrongIRFET™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"StrongIRFET™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Through Hole","Package / Case":"TO-220-3","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-TO220-3","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":"$2.66","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.16000","currency":"USD"},{"qty":10,"price":"$2.83800","currency":"USD"},{"qty":100,"price":"$2.28150","currency":"USD"},{"qty":500,"price":"$1.87446","currency":"USD"},{"qty":1000,"price":"$1.56205","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c6165280ff697913e18cbb4d1b7898bf.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum drain current of IRF135B203?","answer":"The continuous drain current is 129 A at 25 °C case temperature. This rating assumes the case is held at 25 °C; real-world current is derated based on the thermal resistance of the heatsink and ambient temperature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRF135B203","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRF135B203 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}}