{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD5NK50ZT4","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD5NK50ZT4","canonicalUrl":"https://icboms.com/stmicroelectronics/STD5NK50ZT4","factsUrl":"https://icboms.com/api/mcp/products/STD5NK50ZT4","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH™ N-Channel MOSFET, 500 V drain-source, 4.4 A continuous drain at 25°C, 1.5 Ohm Rds(on) at 10 V gate drive, DPAK (TO-252) surface-mount package, -55°C to 150°C junction temperature.","salesMarkdown":"## What the 500 V / 4.4 A rating means for your BOM The STD5NK50ZT4 is an N-channel MOSFET from ST's SuperMESH™ series, built for offline flyback primaries, auxiliary power supplies, and DC-DC converters where the rail sits above 400 V. The 500 V drain-source breakdown (Vdss) gives enough headroom for universal-input flyback stages (typical reflected voltage plus leakage spike lands around 450 V). ## Gate drive and switching — 10 V is the sweet spot This part is specified with the gate driven at 10 V for the rated Rds(on). The gate threshold (Vgs(th)) max is 4.5 V at 50 µA, so a 5 V logic-level drive will turn it on but with higher on-resistance — roughly double the 1.5 Ohm. For high-efficiency switching, plan for a 10 V gate rail. Input capacitance (Ciss) is 535 pF at 25 V drain-source, a figure that helps estimate switching times and crossover losses. ## Package and thermal — DPAK (TO-252) layout notes The DPAK (TO-252) surface-mount package has a metal tab that is the drain connection. The PCB footprint must include a copper pad and via stitch to the inner-layer ground plane for thermal dissipation. The 70 W power dissipation rating assumes the tab is soldered to a reasonable copper area; without that thermal path, continuous current capability drops sharply.","metaTitle":"STD5NK50ZT4 N-Channel MOSFET, 500V, 4.4A, DPAK","metaDescription":"STD5NK50ZT4 N-Channel MOSFET from STMicroelectronics SuperMESH™ series. 500V Vdss, 4.4A Id, 1.5 Ohm Rds(on) at 10V. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"SuperMESH™","FET Type":"N-Channel","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Vgs (Max)":"±30V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Part Status":"Active","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPAK (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4.5V @ 50µA","Base Product Number":"STD5NK50","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"1.5Ohm @ 2.2A, 10V","Power Dissipation (Max)":"70W (Tc)","Supplier Device Package":"DPAK","Gate Charge (Qg) (Max) @ Vgs":"28 nC @ 10 V","Drain to Source Voltage (Vdss)":"500 V","Input Capacitance (Ciss) (Max) @ Vds":"535 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"4.4A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b86a4aba2b541fe23c0e999d2fbe7295.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STD5NK50ZT4/alternatives.json"},"ai":{"faq":[{"question":"Can STD5NK50ZT4 be used with a 10V gate drive for high efficiency switching?","answer":"Yes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD5NK50ZT4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD5NK50ZT4 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}}