{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L120CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L120CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L120CT","factsUrl":"https://icboms.com/api/mcp/products/STPS20L120CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L120CT, Schottky rectifier, 1 pair common cathode, 120 V Vr, 10 A average per diode, 860 mV Vf at 10 A, TO-220-3 through hole, tube.","salesMarkdown":"## 120 V, 10 A Schottky pair — what you get The STPS20L120CT is a dual common-cathode Schottky rectifier from STMicroelectronics, packing two 10 A diodes rated for 120 V reverse voltage into a single TO-220-3 through-hole package. Reverse leakage sits at 120 µA when blocking 120 V, a typical figure for a 120 V Schottky of this current class. The pair shares a common cathode, so it is wired for center-tapped or half-bridge topologies — the anode of each diode is independent. ST officially lists the STPS20L120CT as obsolete. If this part is on your active BOM, you need to qualify a replacement or secure a lifetime buy from the open market now — the available inventory shrinks every quarter as existing stock gets consumed. ## Package and mounting — the TO-220-3 footprint The supplier device package is TO-220. For a rework or repair tech: the three leads are the two anodes and the common cathode tab — the tab is the cathode connection, so the heatsink pad is electrically live. Mount it with a mica insulator and thermal grease if the heatsink is grounded. For volume production, plan on qualifying a pin-compatible replacement or securing a surplus lot that covers your remaining build requirements.","metaTitle":"STPS20L120CT Schottky Rectifier, 120 V 10 A Dual, TO-220-3","metaDescription":"STPS20L120CT dual common-cathode Schottky rectifier: 120 V Vr, 10 A per diode, 860 mV Vf at 10 A, TO-220-3.","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":"-","Package":"Tube","Diode Type":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Current - Reverse Leakage @ Vr":"120 µA @ 120 V","Voltage - DC Reverse (Vr) (Max)":"120 V","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"860 mV @ 10 A","Current - Average Rectified (Io) (per Diode)":"10A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/09b7e656499944e49477814d3f2ab47b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS20L120CT/alternatives.json"},"ai":{"faq":[{"question":"Is STPS20L120CT obsolete and what is the replacement?","answer":"Yes, the STPS20L120CT is obsolete per STMicroelectronics. For a replacement, look at other 120 V, dual common-cathode Schottky rectifiers in TO-220-3 from ST or competitors — the STPS20120CT series (if still active) or the STPS20H120CT are parametric siblings worth evaluating. Pin compatibility and electrical fit must be verified against your circuit's Vf, leakage, and thermal requirements."},{"question":"What package is STPS20L120CT in?","answer":"It comes in a TO-220-3 through-hole package, also listed as supplier device package TO-220. Shipping form is tube."},{"question":"Where can I buy STPS20L120CT?","answer":"Since the part is obsolete, it is not stocked by franchised distributors. Submit an inquiry for current availability and pricing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L120CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L120CT 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}}