{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STP5NK90Z","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STP5NK90Z","canonicalUrl":"https://icboms.com/stmicroelectronics/STP5NK90Z","factsUrl":"https://icboms.com/api/mcp/products/STP5NK90Z","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH N-Channel MOSFET, 900 V Vdss, 4.5 A Id (Tc), 2.5 Ohm Rds(on) @ 2.25 A, 10 V, ±30 Vgs, 41.5 nC gate charge, 125 W dissipation, TO-220-3, -55°C to 150°C junction.","salesMarkdown":"The STP5NK90Z is an STMicroelectronics N-channel power MOSFET built on the SuperMESH technology platform. The 41.5 nC typical gate charge keeps switching losses manageable in hard-switched topologies. This part is aimed at high-voltage offline power supplies, flyback converters, PFC stages, and industrial inverter circuits where the 900 V breakdown gives headroom for rectified 400 VDC rails plus surge margin. The TO-220 package makes it a straightforward through-hole replacement on existing boards — no special reflow profile needed, just a heatsink and a screwdriver. The STP5NK90Z is marked obsolete by STMicroelectronics. That means no further factory orders are accepted — no last-time-buy window remains open. We source it on a quoted-to-order basis against an RFQ, confirming availability and current pricing at quote time. ## Ratings that drive the fit decision The 900 V Vdss is the headline number — it sets the part for offline AC-DC converters where the bulk rail sits around 400 VDC and you need 800 V to 900 V rating for reliable avalanche and surge withstand. The 2.5 Ohm Rds(on) at 10 V gate drive is the conduction loss anchor — at 2.25 A that is about 11.4 W conduction loss, which against the 125 W package limit leaves thermal margin for switching losses.","metaTitle":"STP5NK90Z N-Channel MOSFET, 900 V, 4.5 A, TO-220","metaDescription":"STMicroelectronics STP5NK90Z SuperMESH N-channel MOSFET, 900 V Vdss, 4.5 A Id, 2.5 Ohm Rds(on). TO-220 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH™","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":"Obsolete","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4.5V @ 100µA","Base Product Number":"STP5N","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"2.5Ohm @ 2.25A, 10V","Power Dissipation (Max)":"125W (Tc)","Supplier Device Package":"TO-220","Gate Charge (Qg) (Max) @ Vgs":"41.5 nC @ 10 V","Drain to Source Voltage (Vdss)":"900 V","Input Capacitance (Ciss) (Max) @ Vds":"1160 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"4.5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4818fbc4cfdc70b6acbc2437c078939e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy STP5NK90Z available via RFQ confirmation?","answer":"We source the STP5NK90Z on a quoted-to-order basis through independent distribution. Submit an RFQ for current availability and pricing — no stock figure or price is published here because the surplus market moves quickly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STP5NK90Z","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STP5NK90Z 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}}