{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L45CG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L45CG","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L45CG","factsUrl":"https://icboms.com/api/mcp/products/STPS20L45CG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L45CG Schottky rectifier, 45 V DC reverse voltage, 20 A total average rectified current (2 × 10 A per diode), 550 mV forward voltage at 10 A, fast recovery ≤ 500 ns, D2PAK surface-mount package, 150 °C maximum junction temperature.","salesMarkdown":"The 550 mV forward voltage drop at 10 A keeps conduction losses manageable in a 20 A total-output design. With a fast recovery time of ≤ 500 ns, it suits switch-mode power supply secondary-side rectification, OR-ing diodes, and freewheeling clamps in 45 V or lower rails. The D2PAK (TO-263) surface-mount package allows board-level assembly on a copper island for thermal spreading. STMicroelectronics lists the STPS20L45CG as obsolete. No official successor part number appears in the record, so a like-for-like drop-in replacement from the same manufacturer is not documented. ## Ratings that drive the fit decision The 45 V reverse voltage sets the bus ceiling — adequate for 24 V and 36 V rails but leaves no headroom for a 48 V system. The 10 A per-diode average rating sums to 20 A total with both diodes conducting, but the D2PAK package's thermal resistance means derating is necessary above 100 °C ambient; the 150 °C maximum junction temperature is the hard limit. The 550 mV forward drop at 10 A is typical for a 45 V Schottky of this die size — expect higher Vf at cold start and lower at elevated junction temperature. The ≤ 500 ns recovery is fast enough for 100–200 kHz switching, though a SiC or ultrafast silicon diode would be needed above 400 kHz.","metaTitle":"STPS20L45CG Schottky Rectifier, 45V 20A Dual Common Cathode","metaDescription":"STPS20L45CG Schottky diode: 45V Vr, 20A total Io (2x10A), 550mV Vf at 10A, 150°C Tj max. D2PAK surface mount.","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":"Surface Mount","Package / Case":"TO-263-3, D²Pak (2 Leads + Tab), TO-263AB","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"D2PAK","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 STPS20L45CG obsolete?","answer":"Yes, STMicroelectronics lists the STPS20L45CG as obsolete. There is no documented direct replacement from ST, so sourcing is through surplus and independent distribution channels."},{"question":"What is the replacement for STPS20L45CG?","answer":"A functionally equivalent current-production Schottky would need the same 45 V reverse voltage, 20 A total average current (2 × 10 A per diode), common-cathode configuration, and D2PAK package. Parametric cross-referencing against the STPS20 family or other vendors' 45 V dual-Schottky lines is the practical approach for a new-design substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L45CG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L45CG 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}}