PS2561D-1

The PS2561D-1 is a high-performance optocoupler manufactured by Renesas Electronics Corporation, designed for reliable signal transmission between isolated circuits. It features a gallium arsenide infrared LED as the input side and a silicon phototransistor as the output side, enabling efficient and noise-immune data transfer across electrical boundaries. The device offers a high isolation voltage of up to 5000 Vrms, ensuring robust protection in high-voltage environments such as industrial power systems and motor controls. This optocoupler provides a current transfer ratio (CTR) of typically 40% at an input current of 5 mA, making it suitable for applications requiring stable and predictable signal amplification. Its compact 6-pin DIP package ensures easy integration into existing PCB designs without increasing board space. The PS2561D-1 also boasts a wide operating temperature range from -40°C to +85°C, enhancing its reliability in harsh environmental conditions commonly found in automotive, medical, and industrial settings. Key features include low propagation delay (typically 3 µs), which supports fast switching speeds essential for real-time control systems. Additionally, the device exhibits excellent long-term stability and durability due to its hermetically sealed construction, minimizing degradation from moisture or contaminants. The optocoupler is compliant with RoHS standards, reflecting Renesas’ commitment to environmentally responsible manufacturing practices. It is widely used in power supply feedback loops, where it isolates the control circuit from the high-voltage primary side, ensuring safety and system integrity. In industrial automation, the PS2561D-1 facilitates communication between microcontrollers and isolated sensors or actuators. It is also employed in consumer electronics, such as home appliances and HVAC systems, to provide galvanic isolation while maintaining signal fidelity. Its versatility makes it ideal for applications requiring reliable, low-cost isolation in digital and analog signal paths. The PS2561D-1’s design emphasizes simplicity, cost-effectiveness, and performance, making it a preferred choice for engineers seeking dependable isolation solutions in modern electronic systems.