The PC817-1 is a single-channel phototransistor optocoupler manufactured by Sharp Microelectronics. This optocoupler is designed to provide electrical isolation between two circuits while allowing signal transfer. It consists of an LED and a phototransistor, allowing for safe and reliable data transmission across different voltage levels.

Applications

• Microcontroller input isolation
• Power supply feedback isolation
• Noise isolation in data communication
• Signal transmission in industrial control systems
• Interface between different voltage domains

Features

• Electrical Isolation: Provides high voltage isolation between input and output circuits.
• Single Channel: Contains one optocoupler channel.
• Phototransistor Output: Uses a phototransistor as the output device.
• Compact Package: Small package size for space-saving designs.
• RoHS Compliant: Environmentally friendly and compliant with RoHS standards.
• High Current Transfer Ratio (CTR): Efficient signal transfer between input and output.

Benefits

• Enhanced Safety: Provides electrical isolation, protecting sensitive circuits from high voltage damage.
• Noise Immunity: Isolates noise and interference from the input circuit, improving signal quality.
• Improved System Reliability: Prevents ground loops and minimizes the risk of electrical damage.
• Versatile Application: Suitable for a wide range of isolation applications in various electronic circuits.
• Simplified Design: Easy to integrate into existing circuits with minimal design changes.

Additional Details

The PC817-1 optocoupler is constructed using a gallium arsenide (GaAs) infrared emitting diode and a silicon NPN phototransistor. It is available in a standard DIP package. The optocoupler is supplied in tube or tape and reel packaging for automated assembly.

Technical Specifications:

• Isolation Voltage: 5000 Vrms
• Current Transfer Ratio (CTR): 50% to 600%
• Forward Current (IF): 50 mA
• Collector-Emitter Voltage (VCEO): 80 V
• Operating Temperature Range: -30°C to +100°C