{"product_id":"huxuan-mini-isolated-buck-converter-ac-to-dc-5v-12v-power-supply-module","title":"HUXUAN AC to DC 5V\/12V Isolated Buck Converter Power Module","description":"\n\u003ch2\u003eHUXUAN Mini Isolated Buck Converter – AC to DC 5V \/ 12V Power Supply Module\u003c\/h2\u003e\n\u003cp\u003eThis compact \u003cstrong\u003eHUXUAN isolated switch-mode power supply module\u003c\/strong\u003e is an ideal solution for DIY electronics projects, home automation, smart home devices, and embedded systems. It steps down AC mains voltage (50V–277V AC or 70V–390V DC) to a stable, regulated DC output — available in either \u003cstrong\u003e5V 700mA\u003c\/strong\u003e or \u003cstrong\u003e12V 300mA\u003c\/strong\u003e — delivering up to \u003cstrong\u003e3.5W of output power\u003c\/strong\u003e at approximately 80% efficiency. Its isolated design ensures electrical safety between input and output, making it well-suited for integration into enclosures and custom PCB builds.\u003c\/p\u003e\n\n\u003cp\u003eWith built-in overvoltage, overcurrent, overtemperature, and short-circuit protection, this module is designed for long-term, reliable operation. Capacitors rated at 105°C for 10,000 hours mean this module can last 20–50 years under normal room-temperature conditions. The green LED output indicator provides a clear at-a-glance status check.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eDual output options:\u003c\/strong\u003e DC 5V @ 700mA or DC 12V @ 300mA\u003c\/li\u003e\n  \u003cli\u003e🔌 \u003cstrong\u003eWide input range:\u003c\/strong\u003e AC 50V–277V \/ DC 70V–390V — works globally\u003c\/li\u003e\n  \u003cli\u003e🛡️ \u003cstrong\u003eFully isolated design:\u003c\/strong\u003e Electrical isolation between input and output for safe integration\u003c\/li\u003e\n  \u003cli\u003e🔒 \u003cstrong\u003eMulti-layer protection:\u003c\/strong\u003e Overvoltage, overcurrent, overtemperature \u0026amp; short-circuit protection\u003c\/li\u003e\n  \u003cli\u003e💡 \u003cstrong\u003eGreen LED output indicator\u003c\/strong\u003e for quick visual status confirmation\u003c\/li\u003e\n  \u003cli\u003e🔋 \u003cstrong\u003eUltra-low no-load power:\u003c\/strong\u003e \u0026lt;0.05W — energy efficient standby\u003c\/li\u003e\n  \u003cli\u003e📐 \u003cstrong\u003eParallelable outputs:\u003c\/strong\u003e Multiple modules can run in parallel for higher current applications\u003c\/li\u003e\n  \u003cli\u003e🌡️ \u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20°C to +70°C\u003c\/li\u003e\n  \u003cli\u003e⏱️ \u003cstrong\u003eLong service life:\u003c\/strong\u003e Capacitors rated 105°C \/ 10,000 hours (~20–50 years at room temperature)\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eCompact, board-mount form factor\u003c\/strong\u003e — easy to integrate into custom projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eDC 5V 700mA Version\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 50V–277V \/ DC 70V–390V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V ±0.15V (no load to full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5mA–700mA (constant current at full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5W (efficiency ~80%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Load Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;4W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo-Load Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.05W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRipple (50% load)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60mV\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTest Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7Ω (4.9V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen LED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eDC 12V 300mA Version\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 50V–277V \/ DC 70V–390V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12V -0.05V\/+0.3V (no load to full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12mA–300mA (constant current at full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5W (efficiency ~80%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Load Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;4W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo-Load Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.05W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRipple (50% load)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100mV\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTest Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40Ω (12V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Indicator\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGreen LED\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× AC 220V to DC 5V or DC 12V Isolated Power Supply Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/0-25mm-1000-turn-precision-copper-inductor-coil-diy-electronics\"\u003e0.25mm 1000-Turn Precision Copper Inductor Coil for DIY Circuits\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-scr-solid-state-relay-switch-module-dc3-24v-40a-optocoupler\"\u003e1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more guidance on electrical safety standards for power supply modules, visit the U.S. Consumer Product Safety Commission – Electrical Safety.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Power_supply\" target=\"_blank\" rel=\"noopener\"\u003ePower supply\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the DC 5V 700mA and DC 12V 300mA versions of this buck converter module?\u003c\/h4\u003e\n\u003cp\u003eA: Both modules share the same input range (AC 50V–277V \/ DC 70V–390V) and 3.5W output power rating. The \u003cstrong\u003eDC 5V 700mA\u003c\/strong\u003e version outputs 5 volts at up to 700mA — ideal for microcontrollers, Arduino, ESP8266\/ESP32, and USB-powered devices. The \u003cstrong\u003eDC 12V 300mA\u003c\/strong\u003e version outputs 12 volts at up to 300mA, making it suitable for LED strips, small motors, relays, and sensors requiring 12V.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I run multiple modules in parallel to get more current output?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The HUXUAN isolated buck converter is designed to support parallel operation. Multiple modules of the same output voltage can be connected in parallel to increase total available current, allowing you to scale the power supply for higher-demand applications without requiring a single larger unit.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this module safe to connect directly to 220V mains power?\u003c\/h4\u003e\n\u003cp\u003eA: This module is specifically designed for direct connection to AC mains within its rated input range (AC 50V–277V). The isolated design provides electrical separation between the high-voltage input and the low-voltage DC output. However, always exercise caution when working with mains voltages, follow local electrical codes, and house the module in an appropriate insulated enclosure to prevent accidental contact.\u003c\/p\u003e\n\u003ch4\u003eQ: What protection features does this power supply module include?\u003c\/h4\u003e\n\u003cp\u003eA: The module includes built-in \u003cstrong\u003eovervoltage protection, overcurrent protection, overtemperature protection, and short-circuit protection\u003c\/strong\u003e. It also enters a constant current mode at full load, helping to safeguard connected devices and extend the life of the module under demanding operating conditions.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the DC 5V 700mA and DC 12V 300mA versions of this buck converter module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Both modules share the same input range (AC 50V–277V \/ DC 70V–390V) and 3.5W output power rating. The DC 5V 700mA version outputs 5 volts at up to 700mA — ideal for microcontrollers, Arduino, ESP8266\/ESP32, and USB-powered devices. The DC 12V 300mA version outputs 12 volts at up to 300mA, making it suitable for LED strips, small motors, relays, and sensors requiring 12V.\"}}, {\"@type\": \"Question\", \"name\": \"Can I run multiple modules in parallel to get more current output?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The HUXUAN isolated buck converter is designed to support parallel operation. Multiple modules of the same output voltage can be connected in parallel to increase total available current, allowing you to scale the power supply for higher-demand applications without requiring a single larger unit.\"}}, {\"@type\": \"Question\", \"name\": \"Is this module safe to connect directly to 220V mains power?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This module is specifically designed for direct connection to AC mains within its rated input range (AC 50V–277V). The isolated design provides electrical separation between the high-voltage input and the low-voltage DC output. However, always exercise caution when working with mains voltages, follow local electrical codes, and house the module in an appropriate insulated enclosure to prevent accidental contact.\"}}, {\"@type\": \"Question\", \"name\": \"What protection features does this power supply module include?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module includes built-in overvoltage protection, overcurrent protection, overtemperature protection, and short-circuit protection. It also enters a constant current mode at full load, helping to safeguard connected devices and extend the life of the module under demanding operating conditions.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Electronics \u0026 Tech\", \"item\": \"https:\/\/oasis-select.com\/collections\/electronics-tech\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"HUXUAN AC to DC 5V\/12V Isolated Buck Converter Power Module\", \"item\": \"https:\/\/oasis-select.com\/products\/huxuan-mini-isolated-buck-converter-ac-to-dc-5v-12v-power-supply-module\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"12V 300mA","offer_id":47755399037033,"sku":"14:350686#12V 300mA","price":3.21,"currency_code":"USD","in_stock":true},{"title":"5V 700mA","offer_id":47755399069801,"sku":"14:350850#5V 700mA","price":3.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sc5017b5bf07e41b29190cae77cf34cd2R.webp?v=1783268873","url":"https:\/\/oasis-select.com\/products\/huxuan-mini-isolated-buck-converter-ac-to-dc-5v-12v-power-supply-module","provider":"Oasis Select","version":"1.0","type":"link"}