{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS40M80CT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS40M80CT","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS40M80CT","factsUrl":"https://icboms.com/api/mcp/products/STPS40M80CT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS40M80CT Schottky rectifier, 80 V DC reverse, 20 A average per diode, common-cathode pair, 735 mV forward drop at 20 A, TO-220-3 through-hole, fast recovery ≤ 500 ns.","salesMarkdown":"## 735 mV forward drop at 20 A — the conduction loss number The STPS40M80CT is a dual Schottky rectifier from STMicroelectronics, pairing two 20 A diodes in a common-cathode configuration inside a single TO-220-3 through-hole package. Rated for 80 V DC reverse maximum, this part suits 48 V bus rails, 60 V battery systems, and power supplies with a healthy derating margin. The junction temperature rating of 175 °C maximum allows operation in tight thermal enclosures or high-ambient industrial environments, provided the heatsink keeps Tj below that ceiling. Reverse leakage is 65 µA at 80 V and 25 °C junction — expect it to rise with temperature, so budget the standby loss in a hot chassis accordingly.","metaTitle":"STPS40M80CT Schottky Diode, 80 V, 40 A Common Cathode","metaDescription":"STPS40M80CT dual Schottky rectifier: 80 V reverse, 20 A per diode, 735 mV forward drop at 20 A. TO-220 common cathode.","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","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220","Current - Reverse Leakage @ Vr":"65 µA @ 80 V","Voltage - DC Reverse (Vr) (Max)":"80 V","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"735 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f69372d2ec41fbefa283db16d743d0dc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS40M80CT/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STPS40M80CT and STPS40M60CT?","answer":"The two parts share the same package, pinout, and current rating. The difference is the reverse voltage: STPS40M80CT is rated for 80 V, while STPS40M60CT is rated for 60 V. Choose the 80 V version when the DC bus or peak reverse voltage exceeds 60 V."},{"question":"Is STPS40M80CT a common cathode diode?","answer":"Yes, the diode configuration is 1 pair common cathode — the two anodes are separate, and the cathodes are tied together internally. This is the standard topology for a dual Schottky in a TO-220 for OR-ing or center-tap rectifier circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS40M80CT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS40M80CT 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}}