{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L45CFP","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L45CFP","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L45CFP","factsUrl":"https://icboms.com/api/mcp/products/STPS20L45CFP","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L45CFP Schottky rectifier, dual common-cathode, 45 V Vr, 20 A total average rectified current, 550 mV Vf at 10 A per diode, TO-220-3 Full Pack, through-hole, tube.","salesMarkdown":"## What this Schottky pair brings to the rail Its key efficiency number is 550 mV forward voltage drop at 10 A per diode — that is the number that determines how much heat you have to pull out of the TO-220FP full-pack case. This is a standard-recovery Schottky (recovery < 500 ns), so it is suited for 50/60 Hz line-frequency rectification and low-frequency DC-DC converters where switching speed is not the limiting factor. ## Forward voltage — the number that drives the heatsink At 10 A per diode the forward drop is 550 mV max. That is a typical Schottky figure for a 45 V part at this current level. In a 20 A total load, each diode carries 10 A, so the conduction loss per diode is about 5.5 W — total 11 W if both diodes conduct continuously. The TO-220FP case has higher thermal resistance than a standard TO-220 because the plastic isolates the tab, so you need to account for that in the heatsink calculation. ## Package and mounting — field-swap friendly Through-hole TO-220FP, three leads, common-cathode configuration. The full-pack case has no exposed metal tab, so no insulating washer is needed when mounting to a chassis or heatsink. That is a real advantage for a field swap: you can pull the old part, drop this one in, and torque it down without hunting for a mica insulator or thermal pad. Orientation is obvious — the tab is the cathode common, and the two anode pins are symmetric. ## Lifecycle — still a current-production line item STMicroelectronics lists the STPS20L45CFP as an active product. The base product number STPS20 covers a family of 45 V and 60 V variants in different packages; the CFP suffix specifically identifies the TO-220FP full-pack version.","metaTitle":"STPS20L45CFP Schottky Diode, 45V, 20A, TO-220FP, Active","metaDescription":"STPS20L45CFP dual common-cathode Schottky rectifier: 45V Vr, 20A total Io, 550mV Vf at 10A per diode. TO-220FP full-pack, active status.","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 Full Pack","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-220FP","Current - Reverse Leakage @ Vr":"200 µA @ 45 V","Voltage - DC Reverse (Vr) (Max)":"45 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":"$1.8900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/66bba1c5bdcc0956eaaaf0505df34afc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STPS20L45CFP obsolete or active?","answer":"It is listed as active by STMicroelectronics. No discontinuation notice has been issued, so it remains a standard production part suitable for new designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L45CFP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L45CFP 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}}