{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IRLB8743PBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IRLB8743PBF","canonicalUrl":"https://icboms.com/infineon/IRLB8743PBF","factsUrl":"https://icboms.com/api/mcp/products/IRLB8743PBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon HEXFET N-channel MOSFET, 30 V Vdss, 78 A continuous drain at 25°C, 3.2 mOhm Rds(on) max at 40 A / 10 V, TO-220-3 through-hole package, -55°C to 175°C junction temperature.","salesMarkdown":"## 30 V / 78 A — low Rds(on) for high-efficiency switching The IRLB8743PBF is an N-channel MOSFET with 30 V drain-to-source voltage and 78 A continuous drain current. ## Gate charge and switching speed Total gate charge is 54 nC at 4.5 V. Input capacitance Ciss is 5110 pF at 15 V drain bias. ## Package and temperature range Housed in a TO-220-3 through-hole package (supplier device package TO-220AB), the IRLB8743PBF is a standard three-lead vertical mount. ## Lifecycle and compliance It is ROHS3 compliant. The series is Infineon's HEXFET family, a mature trench-technology platform with broad second-source availability from other manufacturers (e.g., STMicroelectronics, ON Semiconductor) for pin-compatible TO-220 N-channel 30 V / 78 A devices, though no official cross-reference is listed in this record.","metaTitle":"IRLB8743PBF HEXFET N-Channel MOSFET, 30 V, 78 A, TO-220AB","metaDescription":"IRLB8743PBF N-channel HEXFET MOSFET: 30 V Vdss, 78 A continuous drain, 3.2 mOhm Rds(on) at 10 V. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"HEXFET®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"HEXFET®","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":"2.35V @ 100µA","Operating Temperature":"-55°C ~ 175°C (TJ)","Rds On (Max) @ Id, Vgs":"3.2mOhm @ 40A, 10V","Power Dissipation (Max)":"140W (Tc)","Supplier Device Package":"TO-220AB","Gate Charge (Qg) (Max) @ Vgs":"54 nC @ 4.5 V","Drain to Source Voltage (Vdss)":"30 V","Input Capacitance (Ciss) (Max) @ Vds":"5110 pF @ 15 V","Drive Voltage (Max Rds On, Min Rds On)":"4.5V, 10V","Current - Continuous Drain (Id) @ 25°C":"78A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.68000","currency":"USD"},{"qty":10,"price":"$1.50400","currency":"USD"},{"qty":100,"price":"$1.17250","currency":"USD"},{"qty":500,"price":"$0.96862","currency":"USD"},{"qty":1000,"price":"$0.76469","currency":"USD"},{"qty":2000,"price":"$0.71372","currency":"USD"},{"qty":5000,"price":"$0.67803","currency":"USD"},{"qty":10000,"price":"$0.66495","currency":"USD"}]},"links":{"datasheetUrl":"https://www.infineon.com/dgdl/irlb8743pbf.pdf?fileId=5546d462533600a4015356605d6b2593","sourceUrl":null},"ai":{"faq":[{"question":"What is the Vgs threshold of IRLB8743PBF?","answer":"The maximum gate threshold voltage is 2.35 V at 100 µA drain current. This is the Vgs(th) spec — the gate voltage at which the FET just begins to conduct. For full enhancement to the rated Rds(on), apply 4.5 V (minimum) or 10 V (maximum) gate drive."},{"question":"Is IRLB8743PBF RoHS compliant?","answer":"Yes, the IRLB8743PBF is ROHS3 compliant — the suffix 'PBF' indicates lead-free (Pb-free) plating on the leads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IRLB8743PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IRLB8743PBF 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}}