Symond
Symond Content Marketer
On Oct 24, 2025


PS2561L-1-A Transistor Output Optocouplers by Renesas – High Reliability for Signal Isolation

The Transistor Output Optocouplers PS2561L-1-A by Renesas are advanced Optoelectronics components designed to deliver high performance, strong isolation, and reliable signal transmission. Engineered for durability and precision, these Transistor Output Optocouplers are used in various industrial, power, and communication applications.

In this article, we’ll cover the technical specifications, key features, and benefits of using these Optocouplers / Photocouplers in modern electronic systems.


Introduction

Renesas’ PS2561L-1-A Transistor Output Optocouplers are compact, high-speed isolation devices featuring a GaAs infrared LED and a high-gain phototransistor. These Optoelectronics components provide electrical isolation and noise immunity between circuits, making them ideal for switching, control, and logic interface designs.


Technical Specifications of PS2561L-1-A Transistor Output Optocouplers

  • Manufacturer: Renesas

  • Part Number: PS2561L-1-A

  • Type: Transistor Output Optocoupler

  • Input Type: GaAs Infrared LED

  • Output Type: NPN Phototransistor

  • Isolation Voltage: 3750 Vrms

  • Current Transfer Ratio (CTR): 80% – 160% (at IF = 5mA, VCE = 5V)

  • Collector-Emitter Voltage (VCEO): 80V

  • Collector Current (IC): 50mA

  • Package Type: 4-Pin LSOP (Low Profile)

  • Operating Temperature Range: -55°C to +110°C

  • Category: Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers

Compact and efficient, the PS2561L-1-A delivers consistent signal integrity with low power consumption and high electrical isolation.


Key Features of PS2561L-1-A Transistor Output Optocouplers

  • High Isolation Voltage (3750 Vrms) – Protects control circuits from high-voltage transients.

  • High CTR Stability – Ensures consistent signal transmission performance.

  • Compact LSOP Package – Saves space in dense PCB layouts.

  • High-Speed Switching – Suitable for logic interfacing and feedback circuits.

  • Wide Temperature Range – Reliable operation in industrial and consumer environments.

These features make the PS2561L-1-A Transistor Output Optocouplers one of the most trusted Optoelectronics solutions for signal isolation and data transmission.


Applications of PS2561L-1-A Transistor Output Optocouplers

The PS2561L-1-A Transistor Output Optocouplers by Renesas are ideal for systems that require reliable electrical isolation and signal integrity, including:

  • Power Supply Feedback Circuits

  • Industrial Control Systems

  • Signal Isolation Interfaces

  • Communication Equipment

  • Consumer and Office Electronics

  • Datasheet

These Optocouplers / Photocouplers ensure stable operation and protection across both high- and low-voltage domains.


Use Case Scenario: Power Supply Feedback Loop

Scenario

A power supply designer required efficient Transistor Output Optocouplers for stable feedback isolation in a switching converter.

Problem

Conventional components introduced signal distortion and instability at higher switching speeds.

Solution

The PS2561L-1-A Optocouplers by Renesas offered fast switching, high isolation, and stable CTR, ensuring accurate voltage feedback.

Result

Improved feedback precision, lower noise interference, and enhanced power efficiency.


Also Available from Other Manufacturers

If you’re looking for alternatives, similar Transistor Output Optocouplers and Optoelectronics are also available from:

These manufacturers offer high-quality equivalents to suit specific electrical and mechanical design requirements.


Why Buy from XON Electronics

XON Electronics offers a broad range of Optoelectronics, including the PS2561L-1-A Transistor Output Optocouplers by Renesas, with:

  • 100% Genuine Components
  • Global Shipping – USA, India, Australia, Europe & more
  • OEM & Bulk Discounts for Distributors
  • Expert Technical Guidance
  • Secure Online Transactions

Buy online from XON Electronics and get authentic Optocouplers / Photocouplers for high-performance designs.


FAQs – PS2561L-1-A Transistor Output Optocouplers by Renesas

Q1. What is the isolation voltage rating?
The PS2561L-1-A provides up to 3750 Vrms isolation.

Q2. What is the typical CTR range?
The current transfer ratio ranges between 80% and 160%.

Q3. Can it be used in high-speed circuits?
Yes, its fast response makes it suitable for feedback and logic interfaces.

Q4. What applications commonly use this component?
It’s ideal for power supplies, industrial controls, and data interfaces.

Q5. Where can I buy PS2561L-1-A Optocouplers?
You can buy them from XON Electronics, shipping to USA, India, Australia, Europe, and other countries.


Conclusion

The PS2561L-1-A Transistor Output Optocouplers by Renesas deliver exceptional isolation performance, reliability, and precision for Optoelectronics, Optocouplers / Photocouplers, and Transistor Output Optocouplers applications. Their compact design, high CTR, and excellent noise immunity make them a top choice for industrial and power system engineers.
Order now from XON Electronics — your trusted source for genuine Optoelectronics and reliable isolation components worldwide.


Looking for help? Visit our FAQ's Section to answer to all your questions

 

X-ON Worldwide Electronics

Welcome To X-ON Electronics
For over three decades, we have been advocating and shaping the electronic components industry. Our management complements our worldwide business scope and focus. We are committed to innovation, backed by a strong business foundation. If you need a trustworthy supplier of electronic components for your business – look no further.
 

Copyright ©2025  X-ON Electronics Services. All rights reserved.
Please ensure you have read and understood our Terms & Conditions before purchasing. All prices exclude GST.

Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted Image for all the cards that are accepted AS9120 Certified