{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS4045CWY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS4045CWY","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS4045CWY","factsUrl":"https://icboms.com/api/mcp/products/STPS4045CWY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS4045CWY, Automotive AEC-Q101 Schottky diode, 1 Pair Common Cathode, 45 V, 20 A per diode, Fast Recovery ≤500ns, TO-247-3, Through Hole.","salesMarkdown":"## What this Schottky pair is rated for The STPS4045CWY is a dual Schottky rectifier in a common-cathode configuration, each diode rated for 20 A average rectified current and 45 V reverse voltage. The fast-recovery characteristic (≤500 ns, >200 mA) suits it for switching power supplies and freewheeling diodes in automotive DC-DC converters, where recovery time directly affects switching losses and EMI. At 20 A forward current the maximum forward voltage is 760 mV. That is a typical Schottky figure for a 45 V device at this current density — low enough to keep conduction losses manageable in a 20 A rail, but not the ultra-low-Vf you would see in a 30 V part. The trade-off is reverse leakage: 200 µA at 45 V, which is acceptable for most automotive loads but worth checking if the diode sits across a high-impedance node in standby. Housed in a TO-247-3 through-hole package, the same footprint used for many 20–30 A dual Schottky and ultrafast rectifiers. Through-hole mounting means the part is hand-solderable for prototypes and rework-friendly, but the thermal pad on the back of the TO-247 needs a good heatsink interface — the tab is electrically the cathode common, so no isolation washer is needed if the heatsink is grounded.","metaTitle":"STPS4045CWY Schottky Diode, 45V 20A Dual Common Cathode","metaDescription":"STPS4045CWY automotive Schottky rectifier, 45V 20A per diode, fast recovery ≤500ns, TO-247-3, AEC-Q101 qualified.","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":"Automotive, AEC-Q101","Package":"Tube","Diode Type":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-247-3","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS4045","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"TO-247-3","Current - Reverse Leakage @ Vr":"200 µA @ 45 V","Voltage - DC Reverse (Vr) (Max)":"45 V","Operating Temperature - Junction":"-40°C~175°C","Voltage - Forward (Vf) (Max) @ If":"760 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/616a4af606b3a2d20858f76eda133e49.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS4045CWY/alternatives.json"},"ai":{"faq":[{"question":"Is STPS4045CWY suitable for automotive applications?","answer":"Yes. It is part of the Automotive series and carries AEC-Q101 qualification, which covers the stress and reliability requirements for automotive-grade semiconductors. The 175°C junction temperature rating supports under-hood and transmission environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS4045CWY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS4045CWY 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}}