{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STU5N62K3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STU5N62K3","canonicalUrl":"https://icboms.com/stmicroelectronics/STU5N62K3","factsUrl":"https://icboms.com/api/mcp/products/STU5N62K3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SuperMESH3™ STU5N62K3, N-channel 620V 4.2A MOSFET, 1.6 Ohm Rds(on) at 10V, 26 nC gate charge, TO-251 (IPAK) through-hole, -55 to 150°C.","salesMarkdown":"## 620 V primary-side switch for offline flyback converters Gate charge is 26 nC typ at 10 V drive, which keeps the switching loss manageable in a 50-100 kHz flyback primary without a high-current gate driver. The 680 pF input capacitance at 50 V drain-source confirms a modest drive requirement — a standard PWM controller output stage can drive it directly. ## Package and board integration — TO-251 (IPAK) The STU5N62K3 comes in a TO-251 (IPAK) through-hole package — three short leads, no tab screw hole, smaller than a full TO-220. The drain tab is the centre lead and is electrically live at the drain potential; the PCB layout must keep creepage clearance from the tab to low-voltage nodes. The package footprint matches the standard IPAK land pattern, with the tab soldered to a copper pad on the board for heat sinking. The 70 W power dissipation rating at case temperature assumes the tab is held at 25 °C — real-world derating follows the thermal resistance from junction to ambient, which depends on the PCB copper area under the tab.","metaTitle":"STU5N62K3 N-Channel MOSFET, 620V 4.2A, 1.6 Ohm Rds(on), IPAK","metaDescription":"STMicroelectronics STU5N62K3 N-channel 620V 4.2A MOSFET in TO-251 (IPAK) package. 1.6 Ohm Rds(on) at 10V gate drive, 26 nC gate charge.","metaKeywords":null},"attributes":{"series":"SuperMESH3™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"SuperMESH3™","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±30V","Technology":"MOSFET (Metal Oxide)","Mounting Type":"Through Hole","Package / Case":"TO-251-3 Short Leads, IPak, TO-251AA","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"4.5V @ 50µA","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"1.6Ohm @ 2.1A, 10V","Power Dissipation (Max)":"70W (Tc)","Supplier Device Package":"TO-251 (IPAK)","Gate Charge (Qg) (Max) @ Vgs":"26 nC @ 10 V","Drain to Source Voltage (Vdss)":"620 V","Input Capacitance (Ciss) (Max) @ Vds":"680 pF @ 50 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"4.2A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.77","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.77000","currency":"USD"},{"qty":10,"price":"$1.46700","currency":"USD"},{"qty":100,"price":"$1.16770","currency":"USD"},{"qty":500,"price":"$0.98806","currency":"USD"},{"qty":1000,"price":"$0.83836","currency":"USD"},{"qty":2000,"price":"$0.79645","currency":"USD"},{"qty":5000,"price":"$0.76650","currency":"USD"},{"qty":10000,"price":"$0.74113","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/63489d28011183f11fc1c3e7c0905d24.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STU5N62K3 a suitable replacement for STP5NK60Z?","answer":"Both are 600 V-class N-channel MOSFETs from STMicroelectronics, but the STU5N62K3 has a 620 V drain-source rating versus 600 V for the STP5NK60Z. The STU5N62K3 carries 1.6 Ohm Rds(on) at 10 V gate drive, compared to 1.5 Ohm for the STP5NK60Z — a 6% difference that is negligible in most designs. The STP5NK60Z is in a TO-220 package; the STU5N62K3 is in a TO-251 (IPAK) through-hole package with a different footprint and tab geometry. Verify the PCB land pattern and heatsinking before substituting."},{"question":"What is the gate charge and Rds(on) of STU5N62K3?","answer":"Gate charge (Qg) is 26 nC maximum at 10 V gate drive. On-resistance (Rds(on)) is 1.6 Ohm maximum at 2.1 A drain current and 10 V gate-source voltage."},{"question":"What package does STU5N62K3 come in?","answer":"The STU5N62K3 is supplied in a TO-251-3 short-leads IPak package, also designated as TO-251AA. The supplier device package is TO-251 (IPAK). It is a through-hole package with three leads and a drain tab."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STU5N62K3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STU5N62K3 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}}