{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L25CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L25CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L25CT","factsUrl":"https://icboms.com/api/mcp/products/STPS20L25CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L25CT Schottky rectifier, dual common-cathode configuration, 25 V Vr, 20 A total (2x10 A), 460 mV Vf at 10 A, Fast Recovery ≤500 ns, TO-220-3 through-hole package.","salesMarkdown":"It pairs two 10 A diodes (20 A total average rectified current) with a maximum reverse voltage of 25 V. The forward voltage drop is 460 mV at 10 A per diode, which keeps conduction losses low in high-current paths like OR-ing diodes, output rectification in low-voltage switch-mode supplies, and reverse-polarity protection. The fast recovery characteristic (≤500 ns, >200 mA) means it handles switching frequencies where a standard PN diode would burn recovery losses — think 50–200 kHz PSU secondaries or DC-DC converter outputs. For a shortage-desk buyer, this part is not in the allocation squeeze that hits niche or end-of-life parts; it is a mainstream Schottky that moves through both franchised and independent channels. If you are filling a BOM line and need traceable stock, the active status plus the dual-sourced nature of the TO-220 Schottky market means lead times are generally manageable — but always verify the date code and supply route for your specific volume window. ## Thermal and mounting — the TO-220 tab is your heatsink interface The TO-220-3 package (Supplier Device Package TO-220) has a metal tab that must be electrically isolated or connected to the common-cathode output rail — the tab is at cathode potential. Maximum junction temperature is 150 °C, so the thermal design needs to keep Tj below that under worst-case load. At 460 mV Vf and 10 A per diode, each diode dissipates about 4.6 W; with both diodes conducting, the total can hit 9.2 W. That demands a heatsink with adequate thermal resistance — a clip-on or bolt-on TO-220 heatsink in still air typically handles 2–4 W; forced air or a larger extruded sink is needed for the full dual-diode load. The through-hole leads also mean the part is mechanically robust for high-vibration environments, but it adds a manual insertion step versus SMD alternatives.","metaTitle":"STPS20L25CT Schottky Diode, 25 V, 20 A, TO-220-3","metaDescription":"STMicroelectronics STPS20L25CT dual Schottky rectifier: 25 V Vr, 20 A total (2x10 A), 460 mV Vf at 10 A, TO-220-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Diode Type":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Current - Reverse Leakage @ Vr":"800 µA @ 25 V","Voltage - DC Reverse (Vr) (Max)":"25 V","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"460 mV @ 10 A","Current - Average Rectified (Io) (per Diode)":"10A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/8fd8fa2745ced614949d3c9ae5819074.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum junction temperature of STPS20L25CT?","answer":"The maximum junction temperature is 150 °C. The thermal design must keep Tj below this under all operating conditions to avoid derating or failure."},{"question":"Can I use STPS20L25CT in a high-frequency switching application?","answer":"Yes, the fast recovery characteristic (≤500 ns, >200 mA) makes it suitable for switching frequencies where a standard PN diode would incur high recovery losses — typical in 50–200 kHz switch-mode power supplies and DC-DC converters. For frequencies above a few hundred kHz, consider a SiC or ultrafast diode with lower Qrr."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L25CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L25CT 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}}