{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS1545R","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS1545R","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS1545R","factsUrl":"https://icboms.com/api/mcp/products/STPS1545R","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS1545R Schottky rectifier, 45 V reverse voltage, 15 A average rectified current, 840 mV forward drop at 30 A, Fast Recovery ≤ 500 ns, TO-262-3 (I2PAK) through-hole package, 175°C max junction temperature.","salesMarkdown":"## 45 V, 15 A Schottky — where it fits and what it costs thermally The STPS1545R is a 45 V, 15 A Schottky rectifier from STMicroelectronics in a through-hole TO-262 (I2PAK) package. The 45 V reverse voltage rating gives comfortable margin on a 24 V DC bus or a 12 V automotive rail, but it won't hold up on a 48 V telecom supply — that's the first fit check. The 15 A average rectified current is the continuous load number; for a 10 A output power supply this diode runs with reasonable junction temperature, but at full 15 A you need to size the heatsink for the conduction loss. Forward drop is specified at 840 mV at 30 A, which is twice the average rating — that's the surge or startup condition. At the nominal 15 A the Vf will be lower, but the 30 A point is what you use for worst-case thermal budgeting in a short-duration overload. The Schottky construction gives fast recovery with negligible reverse-recovery charge, so switching losses stay low in a 100 kHz PFC or output rectifier stage. STMicroelectronics lists the STPS1545R as obsolete. That means no new factory orders, no last-time-buy window — the only channel is independent distribution or surplus stock. If you have this on a BOM for a production board, you need to qualify a replacement or secure a lifetime buy from the spot market. The base product number is STPS1545, and ST may still offer a similar active Schottky in the same I2PAK package — check the STPS1545 family for a current-production variant with the same 45 V, 15 A ratings. ## Through-hole I2PAK — mounting and thermal interface The supplier device package is I2PAK. Unlike a surface-mount D²PAK, this one goes through the board and can be bolted to a chassis or heatsink — useful for designs where the PCB copper alone can't sink 15 A of continuous current.","metaTitle":"STPS1545R Schottky Diode, 45V 15A Fast Recovery, TO-262","metaDescription":"STPS1545R Schottky rectifier, 45V reverse voltage, 15A average current, 840mV forward drop at 30A. TO-262 through-hole package.","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":"Through Hole","Package / Case":"TO-262-3 Long Leads, I²Pak, TO-262AA","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"STPS1545","Capacitance @ Vr, F":"-","Supplier Device Package":"I2PAK","Current - Reverse Leakage @ Vr":"200 µA @ 45 V","Voltage - DC Reverse (Vr) (Max)":"45 V","Current - Average Rectified (Io)":"15A","Operating Temperature - Junction":"175°C(Max)","Voltage - Forward (Vf) (Max) @ If":"840 mV @ 30 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ef0e77143a064ef20600e10fc0364e7a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS1545R/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy STPS1545R?","answer":"The STPS1545R is obsolete from the factory. We source it through independent distribution and surplus inventory channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS1545R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS1545R 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}}