{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L40CFP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L40CFP","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L40CFP","factsUrl":"https://icboms.com/api/mcp/products/STPS20L40CFP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L40CFP Schottky rectifier, dual common cathode, 40 V DC reverse voltage, 10 A average per diode, 550 mV forward drop at 10 A, TO-220-3 Full Pack through-hole package.","salesMarkdown":"Its low forward voltage of 550 mV at 10 A makes it suited for high-efficiency power rectification, OR-ing diodes in redundant power supplies, and freewheeling diodes in low-voltage DC-DC converters. The TO-220-3 Full Pack (TO-220FPAB) package provides full isolation from the heatsink, simplifying thermal management in through-hole designs. ## Lifecycle reality — obsolete and how to source it For existing BOM lines, procurement must turn to the surplus and independent distribution channel. The 550 mV forward drop at 10 A is low for a Schottky of this current class, keeping conduction losses manageable in high-current paths. Reverse leakage is 700 µA at 40 V, typical for a 40 V Schottky; expect it to rise with junction temperature. ## Package and mounting — the isolated TO-220FPAB The TO-220-3 Full Pack (ST's TO-220FPAB) is a fully molded, through-hole package with no exposed metal tab. This eliminates the need for an insulating washer and grease when bolting to a chassis or heatsink, saving assembly time and improving thermal coupling directly through the plastic back. The 3-pin common-cathode arrangement has pins 1 and 3 as the anodes and pin 2 as the common cathode.","metaTitle":"STPS20L40CFP Schottky Diode, 40V 10A, TO-220FPAB, Obsolete","metaDescription":"STPS20L40CFP dual Schottky rectifier: 40V Vr, 10A per diode, 550mV Vf at 10A, TO-220-3 Full Pack.","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","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-3 Full Pack","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220FPAB","Current - Reverse Leakage @ Vr":"700 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"550 mV @ 10 A","Current - Average Rectified (Io) (per Diode)":"10A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/712aa13d6ff87894bc2022ad46cb7b5c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the STPS20L40CFP discontinued?","answer":"Yes, the STPS20L40CFP carries an Obsolete lifecycle status from STMicroelectronics, meaning it is discontinued and no longer in production."},{"question":"What is the replacement for the STPS20L40CFP?","answer":"A functionally similar Schottky diode with the same 40 V / 10 A rating and common-cathode configuration in a TO-220 Full Pack package would need to be evaluated for pin-compatibility and thermal performance."},{"question":"What are the specifications of the STPS20L40CFP?","answer":"It is a dual Schottky rectifier with common cathode, 40 V DC reverse voltage, 10 A average rectified current per diode, 550 mV forward voltage at 10 A, 700 µA reverse leakage at 40 V, 150°C maximum junction temperature, and a TO-220-3 Full Pack through-hole package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L40CFP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L40CFP 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}}