{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STP9NM40N","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STP9NM40N","canonicalUrl":"https://icboms.com/stmicroelectronics/STP9NM40N","factsUrl":"https://icboms.com/api/mcp/products/STP9NM40N","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh™ II series, STP9NM40N, N-Channel MOSFET, 400 V Vdss, 5.6 A Id, 790 mOhm Rds(on) @ 2.5 A, 10 V, TO-220-3 through-hole package, 60 W power dissipation.","salesMarkdown":"## 400 V N-channel MOSFET — MDmesh II in TO-220 It comes in a standard TO-220-3 through-hole package, suitable for offline power supplies, AC-DC converters, and industrial power stages where a 400 V blocking voltage is required. ## 790 mOhm on-resistance — conduction loss budget This is the figure to use for worst-case conduction loss calculations in the thermal design. ## Gate charge and input capacitance — switching speed These are moderate figures for a 400 V device — the gate drive power requirement is low, and the switching losses in a hard-switched converter at frequencies up to 100 kHz are manageable.","metaTitle":"STP9NM40N N-Channel MOSFET, 400 V, 5.6 A, MDmesh II, TO-220","metaDescription":"STP9NM40N N-channel MOSFET from STMicroelectronics MDmesh II series. 400 V Vdss, 5.6 A Id, 790 mOhm Rds(on). TO-220-3 package. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ II","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±25V","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":"4V @ 250µA","Base Product Number":"STP9N","Operating Temperature":"150°C(TJ)","Rds On (Max) @ Id, Vgs":"790mOhm @ 2.5A, 10V","Power Dissipation (Max)":"60W (Tc)","Supplier Device Package":"TO-220","Gate Charge (Qg) (Max) @ Vgs":"14 nC @ 10 V","Drain to Source Voltage (Vdss)":"400 V","Input Capacitance (Ciss) (Max) @ Vds":"365 pF @ 50 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"5.6A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/95716834948deb8ece6f32c42872d6a3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STP9NM40N/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent part for STP9NM40N?","answer":"A cross-reference search within the MDmesh II or MDmesh V series in the same TO-220-3 package with a 400 V Vdss and similar Rds(on) and current rating is the recommended approach for a pin-compatible replacement. The 790 mOhm on-resistance at 2.5 A and 5.6 A continuous drain current are the key parametric targets."},{"question":"Where can I find the STP9NM40N datasheet?","answer":"The STP9NM40N datasheet is available from STMicroelectronics' website under the base product number STP9N. The full specifications including switching characteristics, safe operating area curves, and thermal data are in that document."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STP9NM40N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STP9NM40N 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}}