{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD4NK50Z-1","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD4NK50Z-1","canonicalUrl":"https://icboms.com/stmicroelectronics/STD4NK50Z-1","factsUrl":"https://icboms.com/api/mcp/products/STD4NK50Z-1","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH™ N-Channel MOSFET, 500 V Vdss, 3 A continuous drain, 2.7 Ω Rds(on) at 10 V, 12 nC gate charge, through-hole IPak (TO-251AA) package, -55 to 150 °C operating range.","salesMarkdown":"## 500 V, 3 A N-channel in an IPak — what you're looking at The STD4NK50Z-1 is a 500 V, 3 A N-channel power MOSFET from STMicroelectronics' SuperMESH™ series, built with a Zener-protected gate structure for enhanced avalanche ruggedness. At 2.7 Ω max (1.5 A, 10 V), the on-resistance is moderate — not the lowest in the 500 V class, but paired with a 12 nC gate charge it keeps the driver stage simple. ## Through-hole IPak — board-level fit for repair and retrofit The IPak (TO-251AA) package has three short leads that sit flush with the plastic body — no tab overhang like a TO-220. It's a common footprint for power stages on single-layer boards and in cramped enclosures where a TO-220 won't fit. The through-hole mount means it's rework-friendly: a soldering iron and solder wick are enough to swap it, which is why you'll see it on power-supply boards that get field repairs. ## Lifecycle and sourcing — still a current production part STMicroelectronics lists the STD4NK50Z-1 as Active. The base product number STD4N covers a family of 500 V N-channel parts; the Z suffix indicates the SuperMESH generation with Zener protection. For dual-sourcing, the closest pin-compatible sibling is the STD4NK50Z (TO-252 DPAK surface-mount variant) — same die, same ratings, different package. The STD4NK50Z-2 (TO-220) is another through-hole option with the same electrical specs but a larger tab for better heatsinking.","metaTitle":"STD4NK50Z-1 N-Channel MOSFET, 500 V, 3 A, SuperMESH, IPak","metaDescription":"STD4NK50Z-1 N-channel 500 V, 3 A MOSFET from STMicroelectronics SuperMESH series. 2.7 Ω Rds(on), 12 nC gate charge, through-hole IPak.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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-251-3 Short Leads, IPak, TO-251AA","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4.5V @ 50µA","Base Product Number":"STD4N","Operating Temperature":"-55°C~150°C(TJ)","Rds On (Max) @ Id, Vgs":"2.7Ohm @ 1.5A, 10V","Power Dissipation (Max)":"45W (Tc)","Supplier Device Package":"I-PAK","Gate Charge (Qg) (Max) @ Vgs":"12 nC @ 10 V","Drain to Source Voltage (Vdss)":"500 V","Input Capacitance (Ciss) (Max) @ Vds":"310 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":"$0.2634","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the direct replacement or equivalent for STD4NK50Z-1?","answer":"The STD4NK50Z (DPAK surface-mount) and STD4NK50Z-2 (TO-220 through-hole) are pin-compatible die variants with identical 500 V, 3 A, 2.7 Ω ratings. The STD4NK50Z-2 shares the same through-hole mounting style but uses a larger TO-220 tab for better thermal dissipation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD4NK50Z-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD4NK50Z-1 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}}