{"product_id":"1n5819-schottky-diode-1a-40v-fast-switching-for-power-supplies","title":"1N5819 Schottky Diode 1A 40V – Fast Switching for Power Supplies","description":"\u003ch1\u003e1N5819 Schottky Diode – 1A 40V Fast Rectifier\u003c\/h1\u003e\u003cp\u003eThe 1N5819 is a Schottky barrier rectifier diode with an average forward current of 1A and a peak repetitive reverse voltage of 40V. It is widely used for reverse polarity protection, DC-DC converters, and low-voltage rectification thanks to its low forward voltage drop and fast switching speed. Its high efficiency makes it a go-to component for power-sensitive applications.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Repetitive Reverse Voltage (VRRM)\u003c\/td\u003e\n\u003ctd\u003e40V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAverage Forward Current (IF(AV))\u003c\/td\u003e\n\u003ctd\u003e1A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage Drop (VF) at 1A\u003c\/td\u003e\n\u003ctd\u003e0.6V typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReverse Leakage Current (IR) at 25°C\u003c\/td\u003e\n\u003ctd\u003e1mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJunction Capacitance\u003c\/td\u003e\n\u003ctd\u003e110pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003eDO-41 axial lead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReverse polarity protection circuit for battery-powered devices\u003c\/li\u003e\n\u003cli\u003eStep-down buck converter for 5V or 3.3V supplies\u003c\/li\u003e\n\u003cli\u003eBypass diode for solar panels to prevent reverse current\u003c\/li\u003e\n\u003cli\u003eFlyback diode for relays and inductive loads\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThe 1N5819 works with all common microcontrollers and boards operating at 3.3V or 5V logic, such as Arduino Uno, ESP32, and Raspberry Pi. It pairs well with voltage regulators like the LM7805 or MP1584 in DC-DC converter designs and is often used alongside MOSFETs for efficient power switching.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eFor reverse polarity protection, connect the anode to positive input and cathode to the load. The low forward voltage drop ensures minimal power loss compared to standard silicon diodes. Always ensure current stays below 1A and add a heat sink if operating near the limit.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, the 1N5819 works with 5V Arduino boards. Use it for reverse polarity protection by placing it in series with the power input; the low forward voltage drop minimizes power loss.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use this for a 12V circuit?\u003c\/summary\u003e\u003cp\u003eThe 1N5819 is rated for up to 40V, so it is suitable for 12V circuits. Ensure the current does not exceed 1A average forward current.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between 1N5819 and 1N4007?\u003c\/summary\u003e\u003cp\u003eThe 1N5819 is a Schottky diode with a lower forward voltage drop (around 0.6V at 1A) and faster switching, while the 1N4007 is a standard silicon rectifier with a higher drop (~1V) and slower recovery. Choose the 1N5819 for efficiency in low-voltage applications.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445077270893,"sku":"CDN-0921","price":25.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_7308e998-e7b5-45e6-9f8d-2f6ad0264b9f.jpg?v=1781522447","url":"https:\/\/compoden.com\/products\/1n5819-schottky-diode-1a-40v-fast-switching-for-power-supplies","provider":"Compoden","version":"1.0","type":"link"}