{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STD2N105K5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STD2N105K5","canonicalUrl":"https://icboms.com/stmicroelectronics/STD2N105K5","factsUrl":"https://icboms.com/api/mcp/products/STD2N105K5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MDmesh K5 N-Channel MOSFET, STD2N105K5, 1050 V Vdss, 1.5 A continuous drain, 8 Ohm Rds(on) at 750 mA, DPAK surface-mount package.","salesMarkdown":"## 1050 V Vdss in a DPAK — where this MOSFET earns its place The STD2N105K5 from ST's MDmesh K5 series is an N-channel power MOSFET that squeezes a 1050 V drain-source breakdown voltage into a DPAK surface-mount package. That voltage rating targets offline flyback converters, auxiliary power supplies in industrial drives, and PFC boost stages where the DC bus sits above 400 V. The 1.5 A continuous drain current and 8 Ohm Rds(on) at 10 V gate drive mean it is sized for the low-to-moderate current leg of those rails — think a 10–30 W auxiliary winding, not a multi-kilowatt front end. ## Gate drive and switching — 10 nC Qg keeps the driver small Total gate charge is 10 nC at 10 V Vgs. That is low enough that a simple gate-drive transformer or a small integrated driver IC can switch it into the 100 kHz range without the gate-drive losses dominating the thermal budget. ## Thermal and package — DPAK with a 60 W ceiling Maximum power dissipation is 60 W at the case temperature, and the operating junction range runs from -55°C to 150°C. For a 1.5 A load with 8 Ohm Rds(on), the I²R loss at full current is 18 W; the 60 W ceiling leaves headroom for switching losses and ambient temperature derating. The base product number is STD2N105, and the K5 suffix identifies the MDmesh K5 series — no official cross-reference or second-source alternate is listed, but the MDmesh K5 family is a current-production line with multiple density options.","metaTitle":"STD2N105K5 N-Channel MOSFET, 1050 V, 1.5 A, DPAK","metaDescription":"STD2N105K5 N-channel MOSFET from STMicroelectronics MDmesh K5 series. 1050 V Vdss, 1.5 A continuous drain, 8 Ohm Rds(on), DPAK.","metaKeywords":null},"attributes":{"series":"MDmesh™ K5","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ K5","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":"5V @ 100µA","Base Product Number":"STD2N105","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"8Ohm @ 750mA, 10V","Power Dissipation (Max)":"60W (Tc)","Supplier Device Package":"DPAK","Gate Charge (Qg) (Max) @ Vgs":"10 nC @ 10 V","Drain to Source Voltage (Vdss)":"1050 V","Input Capacitance (Ciss) (Max) @ Vds":"115 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"1.5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0700","priceTiers":[{"qty":1,"price":"$2.07000","currency":"USD"},{"qty":10,"price":"$1.72200","currency":"USD"},{"qty":100,"price":"$1.37040","currency":"USD"},{"qty":500,"price":"$1.15956","currency":"USD"},{"qty":1000,"price":"$0.98386","currency":"USD"},{"qty":2500,"price":"$0.93467","currency":"USD"},{"qty":5000,"price":"$0.89953","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/33c251f8077660db190b022843eee622.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STD2N105K5/alternatives.json"},"ai":{"faq":[{"question":"Can I use STD2N105K5 for a 150 W power supply?","answer":"The 1050 V Vdss and 1.5 A continuous drain rating are in the right range for a 150 W offline flyback or PFC stage operating from a universal AC input. The 8 Ohm Rds(on) means conduction losses will be noticeable — at 1 A drain current the I²R loss is 8 W, which must be factored into the thermal design. The 60 W dissipation ceiling and DPAK package can handle that if the PCB copper area is adequate, but the switching losses at the operating frequency also need to be budgeted."},{"question":"Is STD2N105K5 RoHS compliant?","answer":"Yes, the part is ROHS3 compliant per the lifecycle record."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STD2N105K5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STD2N105K5 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}}