{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS20L15G","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS20L15G","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS20L15G","factsUrl":"https://icboms.com/api/mcp/products/STPS20L15G","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS20L15G, Schottky rectifier, 20 A average rectified current, 15 V reverse voltage, 410 mV forward drop at 19 A, D2PAK (TO-263) surface-mount package, tube.","salesMarkdown":"## 20 A Schottky for a 15 V rail — the thermal budget is the real constraint The STPS20L15G is a 20 A, 15 V Schottky rectifier from STMicroelectronics in a D2PAK (TO-263) surface-mount package. Its 410 mV typical forward drop at 19 A keeps conduction losses low, but the 15 V reverse voltage ceiling means this part is strictly for low-voltage rails — a 12 V output, an OR-ing diode on a 5 V bus, or the secondary side of a 15 V-or-less flyback converter. The 20 A average rating is the headline number, but the real design constraint is the junction temperature: 125 °C max, and at 20 A the copper area on the PCB tab pad sets the thermal resistance, not the package itself. ## Obsolete — the sourcing path changes If your design can tolerate a footprint change, a same-function Schottky in D2PAK with a higher reverse voltage (e.g. 30 V or 45 V) is worth evaluating for new production. ## Fast recovery spec — what it means for switching The STPS20L15G is classified as a fast recovery diode with recovery time ≤ 500 ns at forward current > 200 mA. For a Schottky, that recovery time is a category label rather than a limit — Schottky diodes are majority-carrier devices with essentially no stored charge, so switching losses are negligible up to several hundred kHz. The 500 ns bound covers the datasheet test condition; in practice the part switches cleanly into the low-MHz range in a 15 V, 20 A forward converter or OR-ing application. ## Reverse leakage at temperature — the hidden derating factor At 25 °C the reverse leakage is 6 mA at 15 V, which is typical for a 20 A Schottky. What the single-point number does not show is the exponential rise with junction temperature — at 100 °C the leakage can multiply by 5–10×, eating into the thermal budget. If the diode runs near its 125 °C max junction, the leakage power alone (Vr × Ir) can add several watts of dissipation. Keep the junction below 100 °C in continuous operation, or budget extra copper area on the D2PAK tab to keep the temperature rise in check.","metaTitle":"STPS20L15G Schottky Diode, 20 A, 15 V, D2PAK – Obsolete","metaDescription":"STPS20L15G Schottky rectifier: 20 A average, 15 V reverse, 410 mV Vf at 19 A. 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":"-","Packaging":"Tube","Technology":"Schottky","Part Status":"Obsolete","Mounting Type":"Surface Mount","Package / Case":"TO-263-3, D2PAK (2 Leads + Tab), TO-263AB","lifecycle_stage":"eol_hot","Base Product Number":"STPS20","Capacitance @ Vr, F":"-","Supplier Device Package":"D2PAK","Current - Reverse Leakage @ Vr":"6 mA @ 15 V","Voltage - DC Reverse (Vr) (Max)":"15 V","Current - Average Rectified (Io)":"20A","Operating Temperature - Junction":"125°C (Max)","Voltage - Forward (Vf) (Max) @ If":"410 mV @ 19 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/9f7e289b9e39e17a6d1f0c811a7693d2.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the STPS20L15G obsolete?","answer":"Yes, STMicroelectronics lists the STPS20L15G as obsolete. For new designs, evaluate a higher-voltage Schottky in the same D2PAK footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS20L15G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS20L15G 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}}