{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STB8N90K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STB8N90K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STB8N90K5","factsUrl":"https://icboms.com/api/mcp/products/STB8N90K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ K5 series, STB8N90K5, N-Channel MOSFET, 900V Vdss, 8A Id, 800mOhm Rds(on) at 10V, D2PAK (TO-263) surface mount, -55°C to 150°C junction temperature.","salesMarkdown":"## On-resistance and gate threshold — where the efficiency budget lives Rds(on) is specified at 800 mOhm maximum with Vgs = 10 V and Id = 1.17 A — the 10 V drive is the recommended gate voltage to fully enhance the channel; below 5 V the device is still in the linear region (Vgs(th) max is 5 V at 100 µA), so a 12 V gate rail from a bootstrap or auxiliary winding is the safe call for production. The ±30 V maximum gate-source rating gives a comfortable margin for driving the gate with a 12–15 V supply; a 15 V Zener clamp across gate-source is still good practice to protect against Miller-induced spikes during hard-switching transitions. The device is ROHS3 compliant; no lead-free transition concerns for ongoing production. CT suits prototype or low-volume builds. ## Mounting and thermal — D2PAK layout checklist The D2PAK (TO-263) footprint has three leads plus a large exposed drain tab on the bottom.","metaTitle":"STB8N90K5 MOSFET N-Ch 900V 8A D2PAK - MDmesh K5","metaDescription":"STB8N90K5 N-channel MOSFET, 900V Vdss, 8A Id, 800mOhm Rds(on) at 10V. Active production, D2PAK package, -55 to 150°C.","metaKeywords":null},"attributes":{"series":"MDmesh™ K5","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"MDmesh™ K5","Package":"Tape & Reel (TR); Cut Tape (CT)","FET Type":"N-Channel","Vgs (Max)":"±30V","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":"5V @ 100µA","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"800mOhm @ 1.17A, 10V","Power Dissipation (Max)":"130W (Tc)","Supplier Device Package":"D2PAK","Drain to Source Voltage (Vdss)":"900 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"8A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.42","priceTiers":[{"qty":1,"price":"$3.42000","currency":"USD"},{"qty":10,"price":"$2.87400","currency":"USD"},{"qty":100,"price":"$2.32540","currency":"USD"},{"qty":500,"price":"$2.06702","currency":"USD"},{"qty":1000,"price":"$1.76989","currency":"USD"},{"qty":2000,"price":"$1.66654","currency":"USD"},{"qty":5000,"price":"$1.59888","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/024f3ee4e5df1924bbf24df6f05bf146.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STB8N90K5/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of STB8N90K5 at typical operating conditions?","answer":"The maximum Rds(on) is 800 mOhm at Vgs = 10 V and Id = 1.17 A. At the full 8 A drain current, the on-resistance will be higher — expect a typical value around 1 ohm at 25 °C junction, increasing with temperature per the normalised curve in the datasheet."},{"question":"Is STB8N90K5 lead-free?","answer":"Yes, the STB8N90K5 is ROHS3 compliant, meaning it meets the European Union's Restriction of Hazardous Substances directive including the exemption for lead in high-melting-temperature solders."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STB8N90K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STB8N90K5 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}