{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD46P4LLF6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD46P4LLF6","canonicalUrl":"https://icboms.com/stmicroelectronics/STD46P4LLF6","factsUrl":"https://icboms.com/api/mcp/products/STD46P4LLF6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STripFET™ F6 STD46P4LLF6, P-Channel MOSFET, 40V Vdss, 46A Id, 15mOhm Rds(on) @ 10V, 34nC Qg, DPAK (TO-252), 175°C TJ, Active.","salesMarkdown":"Total gate charge is 34 nC at 4.5 V, with a drive voltage window of 4.5 V to 10 V for achieving the rated Rds(on). At a 100 kHz switching frequency the gate-drive current demand is roughly Qg × f = 34 nC × 100 kHz = 3.4 mA average, well within a standard gate-driver IC's capability. ## 175 °C junction — headroom for the thermal derating curve Maximum junction temperature is 175 °C, a full 25 °C above the typical 150 °C ceiling on many automotive-grade P-channels. The power dissipation ceiling is 70 W at case temperature. In a real board with the DPAK's exposed pad soldered to a 1 oz copper plane, the buyer should derate Id from 46 A at 25 °C case to roughly 30 A at 85 °C ambient — the 175 °C rating buys margin in a sealed enclosure or under-hood location where still air pushes the junction above 125 °C. No last-time-buy notice or end-of-life timeline is in effect. The part is ROHS3 compliant.","metaTitle":"STD46P4LLF6 P-Channel MOSFET, 40V 46A, 15mOhm, DPAK","metaDescription":"STD46P4LLF6 P-Channel MOSFET, 40V drain-source, 46A continuous drain, 15mOhm Rds(on) at 10V. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"STripFET™ F6","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"STripFET™ F6","Package":"Tape & Reel (TR) Cut Tape (CT)","FET Type":"P-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"2.5V @ 250µA","Base Product Number":"STD46","Operating Temperature":"175°C (TJ)","Rds On (Max) @ Id, Vgs":"15mOhm @ 23A, 10V","Power Dissipation (Max)":"70W (Tc)","Supplier Device Package":"DPAK","Gate Charge (Qg) (Max) @ Vgs":"34 nC @ 4.5 V","Drain to Source Voltage (Vdss)":"40 V","Input Capacitance (Ciss) (Max) @ Vds":"3525 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"4.5V, 10V","Current - Continuous Drain (Id) @ 25°C":"46A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5800","priceTiers":[{"qty":1,"price":"$1.58000","currency":"USD"},{"qty":10,"price":"$1.29500","currency":"USD"},{"qty":100,"price":"$1.00730","currency":"USD"},{"qty":500,"price":"$0.85378","currency":"USD"},{"qty":1000,"price":"$0.69549","currency":"USD"},{"qty":2500,"price":"$0.65472","currency":"USD"},{"qty":5000,"price":"$0.62354","currency":"USD"},{"qty":12500,"price":"$0.59476","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e5bd85f685cbd677e252c5102618c426.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STD46P4LLF6/alternatives.json"},"ai":{"faq":[{"question":"Does STD46P4LLF6 have a pin-compatible alternative or replacement?","answer":"No official pin-compatible cross-reference or second-source alternate is recorded for this specific order code. For a dual-sourcing review, compare the footprint and key parametrics (40 V, 46 A, 15 mOhm, DPAK) against other STripFET™ F6 P-channel variants in the same package."},{"question":"Can STD46P4LLF6 replace a generic P-channel MOSFET in a 40 V load-switch circuit?","answer":"Yes — the 40 V drain-source rating and 46 A continuous drain cover most 12 V and 24 V high-side load switches. Confirm the DPAK footprint matches the existing PCB land pattern before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD46P4LLF6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD46P4LLF6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}