{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS40SM80CFP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS40SM80CFP","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS40SM80CFP","factsUrl":"https://icboms.com/api/mcp/products/STPS40SM80CFP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS40SM80CFP, Schottky diode, 1 pair common cathode, 80 V DC reverse, 20 A average rectified per diode, 800 mV forward drop at 20 A, TO-220-3 Full Pack (TO-220FPAB), through hole, tube.","salesMarkdown":"## 80 V, 20 A dual Schottky in a fully isolated TO-220 The TO-220FPAB full-pack package provides full isolation from the heatsink — no insulating pad needed, which simplifies assembly and improves thermal transfer to the case. ## Conduction loss and thermal budget at 20 A At 20 A forward current the 800 mV drop produces 16 W per diode. With a junction temperature ceiling of 175 °C, the TO-220FPAB package requires a heatsink sized for the total dissipation — 32 W when both diodes conduct simultaneously. The 50 µA reverse leakage at 80 V is a bench-level sanity check; leakage rises exponentially with junction temperature, so a warm rectifier draws significantly more idle current than the 25 °C spec suggests. Procurement must source through independent distribution or the surplus market. For new designs, a functionally equivalent dual Schottky in the same TO-220FPAB footprint should be qualified — the 80 V / 20 A rating and common-cathode configuration are the primary selection criteria.","metaTitle":"STPS40SM80CFP Schottky Diode, 80 V, 20 A, TO-220FPAB","metaDescription":"STPS40SM80CFP dual common-cathode Schottky diode, 80 V VR, 20 A per diode, 800 mV Vf at 20 A.","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 Full Pack","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220FPAB","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/STPS40SM80CFP/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS40SM80CFP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS40SM80CFP 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}}