{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N5819RL","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"1N5819RL","canonicalUrl":"https://icboms.com/stmicroelectronics/1N5819RL","factsUrl":"https://icboms.com/api/mcp/products/1N5819RL","rawCanonicalId":null},"summary":{"shortDescription":"ON Semiconductor 1N5819RL Schottky rectifier, 40 V reverse voltage, 1 A average rectified current, 550 mV forward voltage, DO-204AL/DO-41 axial package, fast recovery <500 ns.","salesMarkdown":"## Schottky rectifier for low-voltage power conversion The 1N5819RL is a 40 V, 1 A Schottky barrier rectifier in a DO-41 axial-lead package, built for low forward voltage drop and fast switching in power supplies and polarity protection circuits. Its forward voltage is 550 mV maximum at 1 A, which keeps conduction losses lower than a standard PN-junction diode at the same current. The Schottky technology gives it a fast recovery time under 500 ns at forward currents above 200 mA — useful for switching regulators and freewheeling diodes where reverse recovery losses would otherwise eat into efficiency. For replacement, look for a Schottky diode in the same DO-41 package rated at least 40 V reverse and 1 A forward with a comparable forward voltage — the 1N5819 base number covers several variants that differ only by packaging and lead form. ## What the ratings tell a repair bench The 40 V reverse voltage rating is the blocking voltage — in a 12 V or 24 V rail this gives healthy margin, but in a 48 V system you need a higher-rated part like the 1N5820 (60 V) or 1N5822 (100 V). The 1 A average rectified current is the continuous DC rating; peak repetitive current can be higher, but the junction temperature limit of 150 °C sets the real ceiling under load. Reverse leakage is 500 µA at 40 V and 25 °C — expect that to climb with temperature, so a heatsink or adequate lead length is needed if the diode runs near its rated current in a warm enclosure.","metaTitle":"1N5819RL Schottky Diode, 40V 1A DO-41, Obsolete","metaDescription":"1N5819RL Schottky rectifier, 40V reverse voltage, 1A average current, 550mV forward voltage. Fast recovery <500ns. DO-41 axial package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Technology":"Schottky","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N5819","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-41","Current - Reverse Leakage @ Vr":"500 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"1A","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"550 mV @ 1 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4600","priceTiers":[{"qty":1,"price":"$0.46000","currency":"USD"},{"qty":10,"price":"$0.32300","currency":"USD"},{"qty":100,"price":"$0.16310","currency":"USD"},{"qty":500,"price":"$0.13306","currency":"USD"},{"qty":1000,"price":"$0.09873","currency":"USD"},{"qty":2000,"price":"$0.08306","currency":"USD"},{"qty":5000,"price":"$0.07941","currency":"USD"},{"qty":10000,"price":"$0.06868","currency":"USD"},{"qty":25000,"price":"$0.06739","currency":"USD"},{"qty":50000,"price":"$0.05580","currency":"USD"},{"qty":125000,"price":"$0.05494","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/03c6b6de37a5fc3e5f1f52fbe1b26477.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N5819RL/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 1N5819 and 1N5819RL?","answer":"The 1N5819 is the base product number; the RL suffix typically indicates a specific packaging option (Tape & Reel). The die and electrical specifications are identical — both are 40 V, 1 A Schottky diodes in a DO-41 package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/1N5819RL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/1N5819RL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T17:06:56.011Z","lastPublished":"2026-07-16T17:06:56.011Z","indexable":true}}