{"product_id":"ac-dc-isolated-mini-power-supply-module-5v-700ma-12v-300ma-3-5w","title":"AC to DC 5V 700mA \/ 12V 300mA Isolated Mini Power Supply Module","description":"\u003ch2\u003eAC to DC Isolated Mini Switch Power Supply Module – 5V 700mA \/ 12V 300mA, 3.5W\u003c\/h2\u003e\n\u003cp\u003eThis compact isolated switch-mode power supply module converts AC mains voltage (50V–277V AC) down to a stable DC output of either \u003cstrong\u003e5V at 700mA\u003c\/strong\u003e or \u003cstrong\u003e12V at 300mA\u003c\/strong\u003e — delivering up to 3.5W with approximately 80% efficiency. Its ultra-small form factor makes it ideal for embedding inside enclosures, DIY electronics projects, smart home devices, relay boards, LED drivers, and microcontroller circuits where a full-size power adapter simply won't fit.\u003c\/p\u003e\n\n\u003cp\u003eBuilt with isolated topology for improved safety, the module features comprehensive output protection including overvoltage, overcurrent, overtemperature, and short-circuit protection — giving you peace of mind in your builds. Multiple modules can even be wired in parallel to scale current output as needed.\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\n\u003cstrong\u003eTwo output options:\u003c\/strong\u003e DC 5V \/ 700mA or DC 12V \/ 300mA (3.5W total output power)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide input range:\u003c\/strong\u003e AC 50V–277V \/ DC 70V–390V — compatible with global mains voltages (110V, 220V, etc.)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolated design:\u003c\/strong\u003e Provides galvanic isolation between input and output for safer operation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e ~80% under full load\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; embeddable:\u003c\/strong\u003e Mini footprint designed to fit inside junction boxes, enclosures, and panels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreen LED output indicator\u003c\/strong\u003e for at-a-glance status monitoring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull protection suite:\u003c\/strong\u003e Overvoltage, overcurrent, overtemperature, and short-circuit protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eParallel operation:\u003c\/strong\u003e Multiple modules can be paralleled for higher current applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong capacitor lifespan:\u003c\/strong\u003e 105°C rated capacitors, 10,000 hours rated; estimated 20–50 years at room temperature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorking temperature range:\u003c\/strong\u003e -20°C to +70°C (not recommended for continuous use above 70°C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\n\u003ch4\u003eDC 5V \/ 700mA Output Version\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOutput Voltage: 5V ±0.15V (no-load to full load)\u003c\/li\u003e\n  \u003cli\u003eOutput Current: Up to 700mA (constant current mode at full load)\u003c\/li\u003e\n  \u003cli\u003eOutput Power: 3.5W\u003c\/li\u003e\n  \u003cli\u003eRipple (50% load): ~60mV\u003c\/li\u003e\n  \u003cli\u003eTest Resistance: 7Ω (4.9V output)\u003c\/li\u003e\n  \u003cli\u003eEfficiency: ~80%\u003c\/li\u003e\n  \u003cli\u003eIndicator: Green LED\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eDC 12V \/ 300mA Output Version\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOutput Voltage: 12V −0.05V \/ +0.3V (no-load to full load)\u003c\/li\u003e\n  \u003cli\u003eOutput Current: Up to 300mA (constant current mode at full load)\u003c\/li\u003e\n  \u003cli\u003eOutput Power: 3.5W\u003c\/li\u003e\n  \u003cli\u003eRipple (50% load): ~100mV\u003c\/li\u003e\n  \u003cli\u003eTest Resistance: 40Ω (12V output)\u003c\/li\u003e\n  \u003cli\u003eEfficiency: ~80%\u003c\/li\u003e\n  \u003cli\u003eIndicator: Green LED\u003c\/li\u003e\n\u003c\/ul\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\u003eGreat for Use With\u003c\/h3\u003e\n\u003cp\u003eThis module pairs perfectly with other electronics components. Check out these related products from our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/non-contact-capacitive-water-level-sensor-3v-5v\"\u003eNon-Contact Capacitive Water Level Sensor 3.3V–5V\u003c\/a\u003e — a great 5V-powered sensor to integrate with this module\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/50pcs-nickel-sheets-18650-lithium-battery-spot-welding\"\u003e50Pcs Nickel Sheets for 18650 Battery Spot Welding Tool\u003c\/a\u003e — for battery and power-related DIY builds\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/molex-mini-fit-jr-4-pin-4-2mm-pitch-wire-to-board-connector-housing\"\u003eMolex Mini-Fit Jr 4-Pin 4.2mm Pitch Wire-to-Board Housing\u003c\/a\u003e — ideal connectors for wiring up your power supply module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the input voltage range for this AC to DC power supply module?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a wide input range of AC 50V–277V or DC 70V–390V, making it compatible with standard mains voltages worldwide including 110V and 220V\/240V AC systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this module for a 5V Arduino or microcontroller project?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the 5V \/ 700mA output version can power many microcontrollers and small electronics directly from mains voltage. The isolated design adds an extra layer of safety when working with low-voltage circuitry connected to AC mains.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can multiple modules be used together to get more current?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The output characteristics of this module support parallel operation, meaning you can connect two or more identical modules in parallel to increase total available current for your application.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What protections are built into this power supply module?\u003c\/h4\u003e\n\u003cp\u003eA: The module includes overvoltage protection, overcurrent protection, overtemperature protection, and short-circuit protection, helping safeguard both the module and your connected load during fault conditions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is there a 12V version available?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — the module is available in two output configurations: DC 5V at 700mA or DC 12V at 300mA. Please select the correct variant for your project before ordering.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the input voltage range for this AC to DC power supply module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module supports a wide input range of AC 50V–277V or DC 70V–390V, making it compatible with standard mains voltages worldwide including 110V and 220V\/240V AC systems.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this module for a 5V Arduino or microcontroller project?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — the 5V \/ 700mA output version can power many microcontrollers and small electronics directly from mains voltage. 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