{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STP8N90K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STP8N90K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STP8N90K5","factsUrl":"https://icboms.com/api/mcp/products/STP8N90K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STP8N90K5, MDmesh™ K5 series, N-Channel MOSFET, 900V Vdss, 8A continuous drain at 25°C, 130W dissipation, TO-220-3 through-hole, -55°C to 150°C junction temperature.","salesMarkdown":"## 900 V N-channel MOSFET for high-voltage SMPS The STP8N90K5: The 130 W dissipation at the case tells you this part needs a heatsink — the TO-220 tab bolts to a thermal pad or chassis, and the junction-to-case thermal path is the limiting factor for continuous output. ## 130 W dissipation — heatsink is mandatory The 130 W maximum dissipation at case temperature Tc is a junction-limited rating, not a free-air number. For the full 130 W, bolt the tab to a heatsink with thermal grease or a pad — the tab is the drain, so the heatsink may be at bus voltage unless you use an insulating washer. Gate drive threshold is 5 V maximum at 100 µA drain current, with the recommended drive voltage at 10 V for minimum on-resistance. The ±30 V gate-source maximum gives headroom for gate-drive transients in a hard-switching converter, but the 10 V drive rail is the practical target for a clean turn-on. The 150 °C absolute maximum junction is the hard ceiling — the datasheet's safe-operating-area curves and thermal impedance numbers define how close you can run at elevated ambient. The base product number STP8N90 covers the family; the K5 suffix identifies the MDmesh K5 generation, which is the current silicon.","metaTitle":"STP8N90K5 MOSFET N-CH 900V 8A TO-220, MDmesh K5","metaDescription":"STP8N90K5 N-channel 900V 8A MOSFET in TO-220. MDmesh K5 series, -55°C to 150°C junction range, 130W dissipation.","metaKeywords":null},"attributes":{"series":"MDmesh™ K5","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ K5","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±30V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"5V @ 100µA","Base Product Number":"STP8N90","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"-","Power Dissipation (Max)":"130W (Tc)","Supplier Device Package":"TO-220","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":"$3.2600","priceTiers":[{"qty":1,"price":"$3.26000","currency":"USD"},{"qty":10,"price":"$2.73400","currency":"USD"},{"qty":100,"price":"$2.21180","currency":"USD"},{"qty":500,"price":"$1.96602","currency":"USD"},{"qty":1000,"price":"$1.68341","currency":"USD"},{"qty":2000,"price":"$1.58511","currency":"USD"},{"qty":5000,"price":"$1.52075","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a3028bbe0a580870c11868a27a195e25.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STP8N90K5/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STP8N90K5?","answer":"The MDmesh K5 series includes other voltage and current variants in the same TO-220 footprint, but a direct replacement would need matching 900 V, 8 A ratings and the same gate drive characteristics. Confirm the BOM position against the specific application before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STP8N90K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STP8N90K5 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}}