AQY272 Solid State Relay 4-Pin DIP | 2A 48V AC/DC Output
AQY272 Solid State Relay 4-Pin DIP | 2A 48V AC/DC Output
AQY272 Solid State Relay – 4-Pin DIP, 50mA 1.5V DC Input / 2A 48V AC-DC Output
The AQY272 Solid State Relay 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.
Made in Mainland China.
Key Features
- Input Voltage: 1.5V DC
- Input Current: 50mA
- Output Voltage: Up to 48V AC/DC
- Output Current: 2A
- Package: 4-Pin DIP (Dual In-Line Package) — through-hole, PCB-mountable
- Relay Type: Solid State / PhotoMOS
- Zero mechanical contact: Silent, bounce-free switching with long operational lifespan
- Electrically isolated: Optical isolation between input and output for circuit protection
- Suitable for: PCB mounting, breadboard prototyping, signal switching, and load control
Why Choose a Solid State Relay?
Unlike 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.
Typical Applications
- Signal isolation in measurement and test equipment
- Low-voltage motor and solenoid switching
- PLC and microcontroller output interfacing
- Industrial automation and control circuits
- Medical instrumentation (non-diagnostic switching circuits)
- Consumer electronics and smart home prototyping
Package Contents
- 1 × AQY272 Solid State Relay (4-Pin DIP)
For guidance on electronics safety and best practices when working with relays and control circuits, refer to the OSHA Electrical Safety Guidelines.
Frequently Asked Questions
Q: What is the AQY272 Solid State Relay used for?
A: 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.
Q: What is the difference between a solid state relay and a mechanical relay?
A: 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.
Q: Can the AQY272 switch both AC and DC loads?
A: 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.
Q: What package type is the AQY272 and how is it mounted?
A: 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.