{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS40170CG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS40170CG","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS40170CG","factsUrl":"https://icboms.com/api/mcp/products/STPS40170CG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS40170CG, Schottky diode, 1 Pair Common Cathode, 170 V Vr, 20 A per diode, 920 mV Vf @ 20 A, 30 µA leakage, Fast Recovery ≤ 500 ns, D2PAK (TO-263), 175°C junction.","salesMarkdown":"It comes in a D2PAK (TO-263) surface-mount package, making it suitable for high-density power supplies, OR-ing diodes in redundant systems, and output rectification in switch-mode converters up to several hundred watts. The 920 mV forward voltage at 20 A is typical for a 170 V Schottky — expect higher conduction loss than a lower-voltage Schottky but better reverse-recovery than a fast-recovery silicon diode. ST lists the STPS40170CG as obsolete. That means no further factory orders are accepted — no last-time-buy window remains open. Date codes will vary, and counterfeits are a real risk on a discontinued high-current Schottky. A visual inspection and electrical test against the datasheet limits are standard practice before these go into a production board. ## 170 V Schottky — where the ratings matter The 170 V Vr rating gives about 15% derating margin for a 48 V or 72 V bus, but it is tight for a 120 V DC rail — you are at the edge of the SOA. The 20 A per diode is the average rectified current, not the surge; peak repetitive current depends on the junction temperature and the thermal resistance of the D2PAK footprint.","metaTitle":"STPS40170CG Schottky Diode, 170V 20A Common Cathode D2PAK","metaDescription":"STPS40170CG is an obsolete ST Schottky diode, 170V reverse voltage, 20A per diode, common-cathode pair in D2PAK.","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":"STPS401","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"D2PAK","Current - Reverse Leakage @ Vr":"30 µA @ 170 V","Voltage - DC Reverse (Vr) (Max)":"170 V","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"920 mV @ 20 A","Current - Average Rectified (Io) (per Diode)":"20A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cf411351a046367edb6d953ff4433c24.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS40170CG/alternatives.json"},"ai":{"faq":[{"question":"Is STPS40170CG obsolete?","answer":"Yes, STMicroelectronics has marked the STPS40170CG as obsolete. No new factory production is planned. The part is available only through independent distribution and surplus stock channels."},{"question":"What is the replacement or equivalent for STPS40170CG?","answer":"The evidence does not list an official ST successor. A functionally equivalent part would need to be a 170 V, 20 A, common-cathode Schottky in D2PAK. Candidates from other manufacturers (e.g., Vishay, ON Semiconductor) exist — compare Vf, leakage, and thermal resistance before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS40170CG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS40170CG 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}}