{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRFB7446PBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRFB7446PBF","canonicalUrl":"https://icboms.com/infineon/IRFB7446PBF","factsUrl":"https://icboms.com/api/mcp/products/IRFB7446PBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon IRFB7446PBF, HEXFET® StrongIRFET™, N-Channel MOSFET, 40V Vdss, 120A Id, 3.3mOhm Rds(on) @ 70A 10V, 93nC Qg, TO-220AB, -55°C to 175°C.","salesMarkdown":"## 40 V, 120 A N-channel in TO-220AB — what this part is It is designed for high-current switching applications such as DC-DC converters, motor drives, battery management, and power distribution where low conduction loss and robust avalanche capability matter. The 3.3 mOhm maximum on-resistance at 10 V gate drive keeps I²R losses manageable at 70 A continuous drain current, and the 175 °C maximum junction temperature gives headroom in thermally constrained environments like automotive engine bays or industrial enclosures. The TO-220AB through-hole package suits point-to-point wiring on perfboard or soldering into a PCB with a heatsink tab. The ±20 V maximum gate-source voltage gives margin for gate-drive overshoot in noisy environments. It is RoHS3 compliant.","metaTitle":"IRFB7446PBF N-Channel MOSFET, 40V 120A TO-220AB, 3.3mOhm","metaDescription":"IRFB7446PBF N-channel HEXFET MOSFET, 40V Vdss, 120A Id, 3.3mOhm Rds(on) at 10V. Active lifecycle, TO-220AB through-hole.","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-220-3","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"3.9V @ 100µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"3.3mOhm @ 70A, 10V","Power Dissipation (Max)":"99W (Tc)","Supplier Device Package":"TO-220AB","Gate Charge (Qg) (Max) @ Vgs":"93 nC @ 10 V","Drain to Source Voltage (Vdss)":"40 V","Input Capacitance (Ciss) (Max) @ Vds":"3183 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":"$1.61","priceTiers":[{"qty":1,"price":"$1.61000","currency":"USD"},{"qty":10,"price":"$1.43700","currency":"USD"},{"qty":100,"price":"$1.12020","currency":"USD"},{"qty":500,"price":"$0.92534","currency":"USD"},{"qty":1000,"price":"$0.73054","currency":"USD"},{"qty":2000,"price":"$0.68184","currency":"USD"},{"qty":5000,"price":"$0.64774","currency":"USD"},{"qty":10000,"price":"$0.63525","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IRFB7446PBF/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of IRFB7446PBF?","answer":"The maximum Rds(on) is 3.3 mOhm at 70 A drain current with a 10 V gate drive. This is the on-resistance figure used for conduction loss calculations."},{"question":"IRFB7446PBF vs IRFB7440PBF — what's the difference?","answer":"Both are 40 V N-channel HEXFETs in TO-220AB, but the IRFB7446PBF carries a lower 3.3 mOhm Rds(on) at 70 A compared to the IRFB7440PBF's higher on-resistance. The 7446 is the lower-loss option for high-current rails where efficiency matters more than cost."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRFB7446PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRFB7446PBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}