{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20SM120STN","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20SM120STN","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20SM120STN","factsUrl":"https://icboms.com/api/mcp/products/STPS20SM120STN","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20SM120STN, Schottky rectifier, 120 V DC reverse voltage, 20 A average rectified current, fast recovery ≤500 ns, TO-220AB narrow leads, through-hole, ECOPACK2, tube.","salesMarkdown":"The STPS20SM120STN is a 120 V, 20 A Schottky rectifier from STMicroelectronics in a through-hole TO-220AB narrow-leads package. It belongs to the ECOPACK2 series, meaning the device itself is halogen-free and meets ST's green-packaging directive. The fast recovery characteristic (≤500 ns at >200 mA) makes it suitable for high-frequency rectification, freewheeling diodes in switched-mode power supplies, and output rectification in DC-DC converters where reverse-recovery losses matter. ## Obsolete — last-time-buy window is closed STMicroelectronics lists the STPS20SM120STN as Obsolete. The official last-time-buy window has passed; no further production is planned. Procurement for new builds must rely on the surplus and broker channel, where date-code and provenance verification becomes critical. ## Forward drop and leakage — the trade-off Maximum forward voltage is 890 mV at 20 A, which is typical for a 120 V Schottky at this current level — the trade-off for the higher reverse voltage rating. Reverse leakage is 210 µA at 120 V, a figure that doubles with junction temperature; at the 150°C maximum junction temperature, expect leakage to dominate standby losses in a high-temperature environment like a sealed power supply. The device is rated for a junction temperature up to 150°C, so derating the current above 100°C case temperature is necessary to stay within the SOA.","metaTitle":"STPS20SM120STN Schottky Rectifier, 120V 20A, TO-220AB","metaDescription":"Obsolete STPS20SM120STN Schottky rectifier, 120V 20A, fast recovery ≤500ns, TO-220AB.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"ECOPACK®2","Package":"Tube","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Capacitance @ Vr, F":"-","Supplier Device Package":"TO-220AB Narrow Leads","Current - Reverse Leakage @ Vr":"210 µA @ 120 V","Voltage - DC Reverse (Vr) (Max)":"120 V","Current - Average Rectified (Io)":"20A","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"890 mV @ 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/00ac4d13df6e6bd8236a78bd4b9965a5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS20SM120STN/alternatives.json"},"ai":{"faq":[{"question":"Is STPS20SM120STN obsolete?","answer":"Yes, STMicroelectronics lists the STPS20SM120STN as Obsolete. No further production is planned; the last-time-buy window has closed. Sourcing is limited to the surplus and independent distribution channel."},{"question":"What is the replacement for STPS20SM120STN?","answer":"STMicroelectronics has not published an official direct replacement for the STPS20SM120STN. A functionally similar Schottky in the same voltage and current class (120 V, 20 A, TO-220) from ST or another manufacturer would need to be evaluated for forward drop, leakage, and package fit. The STPS20M120STN (non-narrow-lead version) is a common starting point, but verify the lead width matches your heatsink or PCB hole pattern."},{"question":"What are the specifications of STPS20SM120STN?","answer":"The STPS20SM120STN is a Schottky rectifier rated for 120 V DC reverse voltage and 20 A average rectified current. It features fast recovery (≤500 ns at >200 mA), a maximum forward voltage of 890 mV at 20 A, and reverse leakage of 210 µA at 120 V. It comes in a through-hole TO-220AB narrow-leads package with an ECOPACK2 green finish, and operates up to a 150°C junction temperature."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20SM120STN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20SM120STN when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:33:57.998Z","lastPublished":"2026-07-16T14:33:57.998Z","indexable":true}}