PC817A Transistor Output Optocouplers by Sharp – Trusted Optical Isolation for Precision Circuits

The Transistor Output Optocouplers PC817A by Sharp are compact and efficient Optoelectronics components that provide safe signal transfer between circuits while maintaining complete electrical isolation. Known for their reliability and consistent performance, these Transistor Output Optocouplers are widely used in control, communication, and industrial automation systems.

Designed to deliver high-speed switching and superior insulation, the PC817A Optocouplers / Photocouplers ensure stable signal transmission even in environments with electrical noise or high voltage.

Introduction

The PC817A Transistor Output Optocouplers by Sharp utilize an infrared LED and a phototransistor pair to transmit signals optically. This design ensures galvanic isolation between input and output, preventing electrical interference and protecting sensitive components.

These Optoelectronics devices are a preferred choice for power electronics, microcontroller interfacing, and signal processing circuits requiring reliable optical isolation.

Technical Specifications of PC817A Transistor Output Optocouplers

• Manufacturer: Sharp

• Part Number: PC817A

• Type: Transistor Output Optocoupler / Photocoupler

• Input Type: Infrared LED

• Output Type: Phototransistor

• Isolation Voltage: 5,000 Vrms (1 minute)

• Current Transfer Ratio (CTR): 50–600%

• Collector-Emitter Voltage: 80V

• Package Type: 4-pin DIP

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

The PC817A provides a combination of high CTR, low power consumption, and strong electrical isolation, making it suitable for precision circuit applications.

Key Features of PC817A Transistor Output Optocouplers by Sharp

• High Isolation Voltage: 5,000 Vrms between input and output.

• Wide CTR Range: Ensures compatibility with different circuit loads.

• Low Input Current: Reduces power requirements for LED drive.

• Compact DIP Package: Saves space in PCB layouts.

• Fast Switching Response: Supports reliable signal transfer.

• Stable Operation: Resistant to EMI and voltage fluctuations.

These Transistor Output Optocouplers ensure safe and efficient data transfer across isolated sections of a circuit, a hallmark of Sharp’s Optoelectronics expertise.

Applications of PC817A Transistor Output Optocouplers

The PC817A Transistor Output Optocouplers by Sharp are used across a broad range of Optoelectronics and signal isolation applications, including:

• Power supply feedback circuits

• Microcontroller interface isolation

• Industrial automation and PLC systems

• Signal and data transmission circuits

• Home appliances and smart controls

• Audio and communication equipment

These Optocouplers / Photocouplers provide consistent optical isolation, improving safety and performance in sensitive electronic designs.

Use Case Scenario: Safe Signal Isolation in Power Supply Control

Scenario

An industrial automation company needed reliable Transistor Output Optocouplers to isolate control signals in switching power supplies.

Problem

Existing components suffered from instability under electrical noise and voltage surges.

Solution

By integrating PC817A Transistor Output Optocouplers by Sharp, engineers achieved consistent isolation performance and robust signal transfer under fluctuating load conditions.

Result

Enhanced system reliability, extended product lifespan, and improved protection of control circuits from high-voltage interference.

Also Available from Other Manufacturers

You can also explore Transistor Output Optocouplers and Optoelectronics solutions from AOTE, offering equivalent performance for signal isolation and control applications.

At XON Electronics, we supply a comprehensive range of Optocouplers / Photocouplers from global manufacturers, ensuring quality and performance for every design.

Why Buy from XON Electronics

XON Electronics is your trusted global distributor for Optoelectronics, Optocouplers / Photocouplers, and Transistor Output Optocouplers from leading brands like Sharp and AOTE.

Why engineers worldwide prefer XON Electronics:

• 100% Genuine Components from Certified Manufacturers
• Global Shipping – USA, India, Australia, Europe & more
• Technical Support for Component Selection and Design
• Competitive Pricing for Bulk and Retail Orders
• Secure and Fast Online Purchasing

Buy the PC817A Transistor Output Optocouplers by Sharp today from XON Electronics and ensure high-performance optical isolation in your electronic systems.

FAQs – PC817A Transistor Output Optocouplers by Sharp

Q1. What is the isolation voltage of PC817A?
It provides 5,000 Vrms isolation between input and output for one minute.

Q2. What type of output does PC817A provide?
It features a phototransistor output suitable for signal switching and control.

Q3. Is this optocoupler suitable for microcontroller interfacing?
Yes, it’s widely used for isolating MCU signals from high-voltage circuits.

Q4. What is the current transfer ratio range of PC817A?
It ranges from 50% to 600%, depending on LED current.

Q5. Where can I buy PC817A Optocouplers?
Buy them from XON Electronics with global delivery and assured quality.

Conclusion

The PC817A Transistor Output Optocouplers by Sharp are reliable, efficient, and compact Optoelectronics components that ensure high isolation and signal accuracy. Perfect for control systems, automation, and communication applications, these Optocouplers / Photocouplers deliver performance that engineers can trust.

Get your PC817A Transistor Output Optocouplers by Sharp now from XON Electronics — the trusted global destination for quality Optoelectronics and Transistor Output Optocouplers.

Infrared radiations or infrared light are the categories of electromagnetic radiations whose wavelength is longer than that of visible light. Thus these radiations can't be seen through human eyes. Most of the thermal radiation which is radiated by materials present at room temperature is infrared. Like all other electromagnetic radiation, infrared radiations also come with radiant energy and carry on both like a quantum particle (photon) as well as a wave.

Infrared radiation was founded by Sir William Herschel in 1800. It was also known that marginally the greater part of the total vitality from the Sun was inevitably found to land on Earth as infrared. The balance between emitted and absorbed infrared radiation critically affects Earth's atmosphere.

Infrared radiation is absorbed and emitted by molecules when their vibrational and rotational movements are changed. Because of the change in the dipole moment, the vibrational modes in a molecule gets excited, making it a valuable recurrence run for investigation of these vitality states for atoms of the best possible evenness. Infrared spectroscopy helps in examining the transmission and absorption of photons in the range of the infrared spectrum.

Infrared radiation has found its use in scientific, law enforcement, industrial, medical, and military applications. The gadgets with night vision that utilizes dynamic close infrared brightening offer animals and people to be seen without the observer being recognized. The thermal imaging cameras having an infrared feature helps in finding out the loss of heat in insulated systems, to know which electrical equipment is getting overheated as well as to watch changing bloodstream in the skin. Infrared astronomy utilizes telescopes equipped with sensors to get into dusty regions present in space like the molecular clouds, find out substances like planets, and to get a good view of highly red-shifted objects from the initial days of the galaxy. Civilians and military use infrared radiations for night vision, tracking, homing, surveillance and target acquisition.

The transmission of infrared radiation is possible only because of 2 components. One is the infrared emitter and the other one is the infrared receiver. This blog is all about Infrared Receiver. So let’s move forward for it.

Infrared Receiver

A clear line of sight is required for an infrared signal to work. If you are turning the face of an infrared remote control in the direction opposite to that of the equipment that needs to receive its signal then there is a high possibility that nothing is going to happen. The transmission of the signal is not going to be an effective one. To solve the above-mentioned problem, all the infrared system utilizes local infrared emitters. An infrared emitter is referred to as a remote control that is located in front of the gadget that you are using. It is associated with our control framework by a wire.

It is important to have an infrared receiver along with an infrared emitter. An infrared radiation receiver or an infrared receiver is hardware that helps in sending information to some other device from an infrared remote control by decoding and receiving the signals. It is advisable to keep your infrared receiver just below the infrared receiver to support reliable functioning.

This was all we have regarding the infrared receiver. Brands that manufacture them are Everlight, Vishay and Sharp. Make sure to visit them using the links as provided.

View all our Infrared Receiver