{"product_id":"aqy272-solid-state-relay-4-pin-dip-50ma-2a-48v-ac-dc","title":"AQY272 Solid State Relay 4-Pin DIP | 2A 48V AC\/DC Output","description":"\u003ch2\u003eAQY272 Solid State Relay – 4-Pin DIP, 50mA 1.5V DC Input \/ 2A 48V AC-DC Output\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eAQY272 Solid State Relay\u003c\/strong\u003e is a compact, high-reliability photoMOS relay in a 4-pin DIP package, ideal for engineers, hobbyists, and electronics designers who need precise, low-noise switching without mechanical wear. Engineered for both AC and DC load switching, this relay supports a 1.5V DC input at 50mA and can handle output loads up to 2A at 48V AC\/DC — making it a versatile choice for signal isolation, motor control, measurement equipment, and automation circuits.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e 1.5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Current:\u003c\/strong\u003e 50mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e Up to 48V AC\/DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 2A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e 4-Pin DIP (Dual In-Line Package) — through-hole, PCB-mountable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Type:\u003c\/strong\u003e Solid State \/ PhotoMOS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero mechanical contact:\u003c\/strong\u003e Silent, bounce-free switching with long operational lifespan\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectrically isolated:\u003c\/strong\u003e Optical isolation between input and output for circuit protection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e PCB mounting, breadboard prototyping, signal switching, and load control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose a Solid State Relay?\u003c\/h3\u003e\n\u003cp\u003eUnlike traditional electromechanical relays, solid state relays (SSRs) have no moving parts, which means faster switching speeds, no contact wear, and virtually silent operation. The AQY272 uses photoMOS technology for reliable optical isolation, protecting your sensitive control circuitry from the load side. It is well-suited for industrial control panels, test and measurement systems, HVAC controllers, and DIY electronics projects.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSignal isolation in measurement and test equipment\u003c\/li\u003e\n  \u003cli\u003eLow-voltage motor and solenoid switching\u003c\/li\u003e\n  \u003cli\u003ePLC and microcontroller output interfacing\u003c\/li\u003e\n  \u003cli\u003eIndustrial automation and control circuits\u003c\/li\u003e\n  \u003cli\u003eMedical instrumentation (non-diagnostic switching circuits)\u003c\/li\u003e\n  \u003cli\u003eConsumer electronics and smart home prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × AQY272 Solid State Relay (4-Pin DIP)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on electronics safety and best practices when working with relays and control circuits, refer to the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety Guidelines\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: What is the AQY272 Solid State Relay used for?\u003c\/h4\u003e\n\u003cp\u003eA: The AQY272 solid state relay is used for low-voltage signal switching and electrical isolation in applications such as industrial automation, test and measurement equipment, microcontroller interfacing, and consumer electronics prototyping. Its 4-pin DIP package makes it easy to mount on standard PCBs or breadboards.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between a solid state relay and a mechanical relay?\u003c\/h4\u003e\n\u003cp\u003eA: A solid state relay (SSR) uses semiconductor components and optical isolation (photoMOS technology) instead of mechanical contacts to switch electrical loads. This results in silent, bounce-free operation, faster switching times, longer lifespan, and better reliability in high-cycle or sensitive electronic environments compared to traditional electromechanical relays.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can the AQY272 switch both AC and DC loads?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The AQY272 is rated for both AC and DC output loads, supporting up to 2A at 48V AC\/DC. This makes it a versatile choice for a wide range of control and switching circuit designs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What package type is the AQY272 and how is it mounted?\u003c\/h4\u003e\n\u003cp\u003eA: The AQY272 comes in a 4-pin DIP (Dual In-Line Package) through-hole format, which is compatible with standard PCB through-hole soldering and breadboard prototyping. Its compact footprint is ideal for space-constrained circuit designs.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the AQY272 Solid State Relay used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The AQY272 solid state relay is used for low-voltage signal switching and electrical isolation in applications such as industrial automation, test and measurement equipment, microcontroller interfacing, and consumer electronics prototyping. 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