{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STPS1545D","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STPS1545D","canonicalUrl":"https://icboms.com/stmicroelectronics/STPS1545D","factsUrl":"https://icboms.com/api/mcp/products/STPS1545D","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STPS1545D Schottky diode, 45 V reverse, 15 A average rectified, 840 mV forward drop at 30 A, fast recovery ≤500 ns, TO-220AC through-hole package, 175°C junction temperature.","salesMarkdown":"## What the 15 A, 45 V ratings mean for the power rail The 15 A average rectified current (Io) is the continuous load it can carry with the tab bolted to a heatsink; the 45 V reverse voltage gives headroom on a 24 V rail and still covers a 36 V battery bus with margin. Forward drop hits 840 mV at 30 A pulsed — that is the conduction loss floor when the diode is carrying surge current, not the steady-state figure. ## Switching speed and thermal ceiling Junction temperature rated to 175°C max — that is a full military-grade junction limit, meaning this diode can sit on a hot heatsink in a cramped industrial supply without derating the current prematurely. Reverse leakage is 200 µA at 45 V and 25°C; expect it to climb with junction temperature, so the leakage power contribution matters in the thermal budget above 125°C. ## Package and field-service fit TO-220AC with a single mounting hole — one screw through the tab into a heatsink, and the anode and cathode are the two leads. Orientation is obvious: the tab is the cathode (output) side, the metal face is electrically common with the cathode. Through-hole mounting means you can swap it on site with a soldering iron and a desoldering pump — no hot-air station, no preheater. It is in the kit.","metaTitle":"STPS1545D Schottky Diode, 45V 15A TO-220AC, Fast Recovery","metaDescription":"STPS1545D Schottky diode, 45V reverse, 15A average, 840mV Vf at 30A. TO-220AC through-hole, 175°C junction. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tube","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"TO-220-2","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"STPS1545","Capacitance @ Vr, F":"-","Supplier Device Package":"TO-220AC","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":"$1.1600","priceTiers":[{"qty":1,"price":"$1.16000","currency":"USD"},{"qty":10,"price":"$0.94900","currency":"USD"},{"qty":100,"price":"$0.73810","currency":"USD"},{"qty":500,"price":"$0.62562","currency":"USD"},{"qty":1000,"price":"$0.50963","currency":"USD"},{"qty":2000,"price":"$0.47976","currency":"USD"},{"qty":5000,"price":"$0.45691","currency":"USD"},{"qty":10000,"price":"$0.43582","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ef0e77143a064ef20600e10fc0364e7a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STPS1545D/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STPS1545D?","answer":"Pin-compatible alternatives would share the TO-220AC footprint and similar 45 V, 15 A ratings, but no specific MPN is documented as a direct replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STPS1545D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STPS1545D 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}}