{"product_id":"15-50v-to-9v-3a-dc-dc-waterproof-buck-converter","title":"15-50V to 9V 3A DC-DC Waterproof Step-Down Buck Power Converter Module EM15-50S0903P","description":"\u003ch2\u003e📋 Overview\u003c\/h2\u003e\n\u003cp\u003eThe EM15-50S0903P is a non-isolated DC-DC step-down (buck) converter that takes a wide 15V to 50V DC input and delivers a clean, regulated 9V DC output at up to 3A (27W maximum). Built on a synchronous rectification platform with high efficiency and a compact, waterproof housing, it's an easy drop-in solution for stepping down higher voltage sources — like 24V or 48V battery banks and vehicle systems — down to 9V for accessories, electronics, and control circuits.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003e⭐ Key Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide input range (15-50V DC)\u003c\/strong\u003e — Works with 24V, 36V, and 48V nominal systems without needing a specific voltage match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable 9V \/ 3A output\u003c\/strong\u003e — Delivers up to 27W of clean, regulated power for accessories, relays, radios, and control electronics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh efficiency (up to 94.4%)\u003c\/strong\u003e — Synchronous rectification minimizes wasted heat and power loss.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof IP67 housing\u003c\/strong\u003e — Sealed epoxy-filled enclosure suited for outdoor, automotive, marine, and industrial environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in protections\u003c\/strong\u003e — Short circuit, overload, and low-voltage (undervoltage) protection with automatic recovery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide operating temperature range\u003c\/strong\u003e — Rated for continuous operation from -40°C to +55°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📊 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15-50V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e9V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 3A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e27W Maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 94.4% (typical @ nominal input, 25°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConverter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-isolated, synchronous rectification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUndervoltage Shutdown \/ Recovery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~14.7-15V shutdown \/ ~15-15.5V recovery, automatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShort Circuit \/ Overload Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes — hiccup mode, automatic restart when fault clears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Ambient Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-55°C to +100°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaterproof Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput \u0026amp; Output Wire Gauge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Lead Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 150 mm (6 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L x W x H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 63 × 32 × 18 mm (2.48 x 1.26 x 0.71 inches) L × W × H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 70 g (2.4 Ounces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMTBF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥ 200,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitching Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 ±10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDesign meets RoHS \/ CE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1× EM15-50S0903P DC-DC Converter Module (with pre-attached input\/output wire leads)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003e📝 Note:\u003c\/strong\u003e Wire leads are bare-ended for direct connection. Mounting hardware, connectors, and enclosures are not included and must be purchased separately.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e🎯 Common Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Control Systems\u003c\/strong\u003e — Powering 9V-rated sensors, relays, and controllers from higher-voltage industrial buses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternative Energy Setups\u003c\/strong\u003e — Stepping down solar or battery bank voltage to a stable 9V rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomotive \u0026amp; Forklift Electronics\u003c\/strong\u003e — Regulating 24V\/48V vehicle power down to 9V for accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGolf Carts \u0026amp; Electric Vehicles\u003c\/strong\u003e — Supplying 9V loads from higher-voltage battery packs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelecommunications Equipment\u003c\/strong\u003e — Powering 9V devices from higher-voltage telecom power buses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine \u0026amp; Boat Electronics\u003c\/strong\u003e — Sealed, waterproof design suited for onboard 9V accessory power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED Lighting Projects\u003c\/strong\u003e — Driving 9V LED strips or fixtures from higher-voltage supplies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e🚀 Getting Started\u003c\/h2\u003e\n\u003cp\u003eSetting up the EM15-50S0903P is straightforward:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eConfirm your input source is within the 15-50V DC range.\u003c\/li\u003e\n\u003cli\u003eConnect the input wires (red positive and black negative) to your power source.\u003c\/li\u003e\n\u003cli\u003eConnect the output wires (yellow positive and black negative) to your 9V load.\u003c\/li\u003e\n\u003cli\u003ePower on and verify the output reads approximately 9V DC with a multimeter before connecting sensitive electronics.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eSold and supported by \u003ca href=\"https:\/\/envistiamall.com\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eEnvistia Mall\u003c\/a\u003e. Ships from the USA. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Envistia","offers":[{"title":"Default Title","offer_id":48875016225017,"sku":"EM-POWER-0077","price":10.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/files\/EM15-50S0903P-DC-DC-Converter-1E.jpg?v=1787333905","url":"https:\/\/envistiamall.com\/es\/products\/15-50v-to-9v-3a-dc-dc-waterproof-buck-converter","provider":"Envistia Mall","version":"1.0","type":"link"}