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PS2561B-1

Manufacturer: NEC

DIP PHOTOCOUPLER OPERATING AMBIENT TEMPERATURE 110°C

Partnumber Manufacturer Quantity Availability
PS2561B-1,PS2561B1 NEC 1827 In Stock

Description and Introduction

DIP PHOTOCOUPLER OPERATING AMBIENT TEMPERATURE 110°C The **PS2561B-1** is a high-performance optocoupler designed to provide reliable signal isolation in electronic circuits. As an industry-standard component, it integrates an infrared LED optically coupled with a phototransistor, ensuring electrical isolation between input and output while transmitting signals accurately.  

This optocoupler is widely used in applications requiring noise immunity, voltage level shifting, or safety isolation, such as industrial control systems, power supplies, and communication interfaces. With a typical isolation voltage of **5,000 Vrms**, the PS2561B-1 ensures robust protection against high-voltage transients and ground loop interference.  

Key features include a **minimum current transfer ratio (CTR) of 50%**, ensuring efficient signal transmission, and a compact **DIP-4 package** for easy integration into circuit designs. Its fast switching response makes it suitable for digital signal isolation, while its low power consumption enhances energy efficiency.  

Engineers favor the PS2561B-1 for its reliability, compliance with international safety standards, and consistent performance across temperature variations. Whether used in motor control, medical equipment, or automation systems, this optocoupler delivers dependable isolation while maintaining signal integrity.  

For designers seeking a proven solution for signal isolation, the PS2561B-1 remains a trusted choice in modern electronics.

Application Scenarios & Design Considerations

DIP PHOTOCOUPLER OPERATING AMBIENT TEMPERATURE 110°C

Alternative Part Number

  • PC817X1NSZ0F --: Standard 4-pin DIP photocoupler with similar CTR and isolation ratings, widely available and pin-compatible.
  • LTV-817S-TA1 --: General-purpose DIP-4 optocoupler with comparable current transfer ratio and 5kV isolation, a common drop-in substitute.
  • EL817S1(C)-V --: DIP-4 phototransistor optocoupler offering similar CTR bins and isolation voltage, suitable for signal isolation applications.
  • PC817X1NSZ0F --: Industry-standard general-purpose phototransistor optocoupler with CTR and isolation ratings comparable to the PS2561B-1, widely available and pin-compatible in DIP-4.
  • EL817 --: DIP-4 phototransistor optocoupler offering similar CTR ranges and 5 kV isolation, a common drop-in replacement for NEC PS2561 series parts.
  • TLP281-1 --: Single-channel phototransistor optocoupler in DIP-4 with comparable isolation voltage and CTR, suitable as a functional substitute for the PS2561B-1.

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