{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STF12N65M5","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STF12N65M5","canonicalUrl":"https://icboms.com/stmicroelectronics/STF12N65M5","factsUrl":"https://icboms.com/api/mcp/products/STF12N65M5","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STF12N65M5, MDmesh™ V, N-Channel MOSFET, 650V Vdss, 8.5A Id, 430mOhm Rds(on), 22nC Qg, TO-220-5 Full Pack, Through Hole, 150°C TJ.","salesMarkdown":"## 650 V N-channel MOSFET for offline SMPS primary side The STF12N65M5 is a 650 V N-channel power MOSFET from STMicroelectronics' MDmesh™ V series, packaged in a TO-220-5 Full Pack (TO-220FP) with isolated mounting tab. The 650 V drain-source voltage rating suits it for the primary side of single-switch flyback, PFC boost, and half-bridge LLC converters operating from universal AC input (85–265 VAC) with adequate derating headroom for line transients. ## On-resistance and gate charge — switching loss trade-off The low gate charge reduces drive current requirements at high frequency — a 22 nC gate charged at 100 kHz draws roughly 2.2 mA average from the gate driver, keeping the bootstrap capacitor voltage stable. ## Thermal limits and package reality Maximum power dissipation is 25 W at case temperature, limited by the TO-220FP's insulated tab. The junction temperature rating of 150 °C means the design must keep the junction below that under worst-case load and ambient — the 25 W ceiling translates to a junction-to-case thermal resistance of about 5 °C/W, typical for a full-pack TO-220. The through-hole TO-220FP package (TO-220-5 Full Pack) provides a fully isolated backside tab — no insulating washer needed, which simplifies assembly and improves thermal coupling to a heatsink. The 5-lead variant includes a dedicated sense pin (if present) or Kelvin source connection for accurate gate-drive return. ROHS3 compliant per, with no exemptions that would complicate EU or RoHS-restricted markets. No stock-holding claim; the part is procured per BOM quantity.","metaTitle":"STF12N65M5 N-Channel MOSFET, 650V, 8.5A, MDmesh V, TO-220FP","metaDescription":"STF12N65M5 N-channel 650V 8.5A MOSFET, 430mOhm Rds(on), 22nC gate charge. MDmesh V series, TO-220FP package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"MDmesh™ V","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"MDmesh™ V","Package":"Tube","FET Type":"N-Channel","Vgs (Max)":"±25V","Technology":"MOSFET (Metal Oxide)","FET Feature":"-","Mounting Type":"Through Hole","Package / Case":"TO-220-5 Full Pack","Product Status":"Active","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"5V @ 250µA","Base Product Number":"STF12","Operating Temperature":"150°C (TJ)","Rds On (Max) @ Id, Vgs":"430mOhm @ 4.3A, 10V","Power Dissipation (Max)":"25W (Tc)","Supplier Device Package":"TO-220FP","Gate Charge (Qg) (Max) @ Vgs":"22 nC @ 10 V","Drain to Source Voltage (Vdss)":"650 V","Input Capacitance (Ciss) (Max) @ Vds":"900 pF @ 100 V","Drive Voltage (Max Rds On, Min Rds On)":"10V","Current - Continuous Drain (Id) @ 25°C":"8.5A (Tc)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9700","priceTiers":[{"qty":1,"price":"$2.97000","currency":"USD"},{"qty":10,"price":"$2.47000","currency":"USD"},{"qty":100,"price":"$1.96560","currency":"USD"},{"qty":500,"price":"$1.66316","currency":"USD"},{"qty":1000,"price":"$1.41117","currency":"USD"},{"qty":2000,"price":"$1.34062","currency":"USD"},{"qty":5000,"price":"$1.29021","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c148e8c964dcad09eca3b129ee6c2e91.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STF12N65M5/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of the STF12N65M5?","answer":"This is the conduction-loss figure to use for worst-case thermal calculations."},{"question":"Is the STF12N65M5 RoHS compliant?","answer":"Yes, it is ROHS3 compliant, with no RoHS-exempted substances above the threshold limits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STF12N65M5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STF12N65M5 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}}