{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD5NK40ZT4","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD5NK40ZT4","canonicalUrl":"https://icboms.com/stmicroelectronics/STD5NK40ZT4","factsUrl":"https://icboms.com/api/mcp/products/STD5NK40ZT4","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH™ N-Channel MOSFET, 400 V Vdss, 3 A continuous drain, 1.8 Ω Rds(on) at 10 V, DPAK (TO-252) surface-mount package, -55°C to 150°C junction temperature.","salesMarkdown":"## 400 V N-channel MOSFET for offline power switching The STMicroelectronics STD5NK40ZT4 is a 400 V N-channel MOSFET from the SuperMESH series, built with ST's strip-layout technology to reduce on-resistance per area and gate charge. The DPAK (TO-252) surface-mount package with exposed drain tab suits automated assembly on medium-power PCBs, but the tab's thermal path to the board copper is part of the dissipation budget — 45 W maximum at case temperature is achievable only with adequate copper area and vias. The 4.5 V threshold maximum at 50 µA means the device is fully enhanced with a standard 10 V gate drive; logic-level drive at 5 V will not guarantee the rated Rds(on) — the 1.8 Ω spec is measured at 10 V only. For designs running from a 5 V bias rail, check the transfer curve in the datasheet to confirm conduction loss at the actual gate voltage. ## Temperature range and package — storage and reflow notes The ±30 V maximum gate-source rating is generous, but a gate-source zener or TVS is cheap insurance against ringing in a half-bridge layout.","metaTitle":"STD5NK40ZT4 N-Channel MOSFET, 400 V, 3 A, DPAK","metaDescription":"STD5NK40ZT4 N-channel SuperMESH MOSFET, 400 V Vdss, 3 A continuous drain, 1.8 Ω Rds(on), DPAK package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH™","Package":"Tape & Reel (TR); Cut Tape (CT)","FET Type":"N-Channel","Vgs (Max)":"±30V","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":"4.5V @ 50µA","Base Product Number":"STD5NK40","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"1.8Ohm @ 1.5A, 10V","Power Dissipation (Max)":"45W (Tc)","Supplier Device Package":"DPAK","Gate Charge (Qg) (Max) @ Vgs":"17 nC @ 10 V","Drain to Source Voltage (Vdss)":"400 V","Input Capacitance (Ciss) (Max) @ Vds":"305 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"3A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4a00794dd8d95d0d199ef50a5da23455.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD5NK40ZT4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD5NK40ZT4 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}}