{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS40SM80CG-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS40SM80CG-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS40SM80CG-TR","factsUrl":"https://icboms.com/api/mcp/products/STPS40SM80CG-TR","rawCanonicalId":null},"summary":{"shortDescription":"ST STPS40SM80CG-TR, Schottky diode, 1 pair common cathode, 80 V DC reverse, 20 A average per diode, 800 mV forward drop at 20 A, 50 µA leakage at 80 V, D²Pak (TO-263) surface mount, fast recovery ≤500 ns.","salesMarkdown":"## Dual Schottky in a single D²Pak tab The STPS40SM80CG-TR is a Schottky rectifier from ST, housing a pair of common-cathode diodes in a D²Pak (TO-263) surface-mount package. The fast-recovery speed (≤500 ns at >200 mA) suits it for switching power supplies, OR-ing diodes, and freewheeling circuits where low forward loss and fast turn-off are needed. ## Obsolete — plan the replacement now ST lists the STPS40SM80CG-TR as obsolete. For new designs or BOM lines that need a drop-in, the common-cathode Schottky in D²Pak at 80 V / 20 A per diode is a well-populated space — look for a pin-compatible alternative from ST or another vendor with the same footprint and current rating. ## Thermal and mounting notes for the D²Pak The D²Pak (TO-263) package has an exposed tab on the bottom that carries the cathode connection. The junction temperature ceiling is 175 °C, so the thermal pad and airflow need to keep the junction below that under the full 20 A load per diode.","metaTitle":"STPS40SM80CG-TR Schottky Diode, 80 V, 20 A, D²Pak, Obsolete","metaDescription":"STPS40SM80CG-TR Schottky diode, 80 V reverse, 20 A average per diode, common cathode pair, D²Pak surface mount.","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":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"D²PAK","Current - Reverse Leakage @ Vr":"50 µA @ 80 V","Voltage - DC Reverse (Vr) (Max)":"80 V","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"800 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/22d3f28143d7304832147a477cb05869.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS40SM80CG-TR/alternatives.json"},"ai":{"faq":[{"question":"Does STPS40SM80CG-TR have a common cathode configuration?","answer":"Yes. The two Schottky diodes share a common cathode connection, with the anodes brought out separately. This is the standard arrangement for center-tap rectifiers and OR-ing applications."},{"question":"What is STPS40SM80CG-TR's listed speed?","answer":"It is rated as a fast-recovery Schottky with recovery time ≤500 ns at forward current >200 mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS40SM80CG-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS40SM80CG-TR 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}}