The PC817A/PC817X1NSZ9F is a general-purpose phototransistor optocoupler manufactured by Sharp Microelectronics. It provides electrical isolation between input and output circuits, making it ideal for a variety of applications where safety and noise immunity are critical.

Applications:

• Power supply isolation
• Digital logic isolation
• Microcontroller interface
• Signal transmission
• Noise isolation

Features:

• High isolation voltage
• Compact package
• CTR (Current Transfer Ratio) of 50-600%
• RoHS compliant

Benefits:

• Protects sensitive circuits from high voltage transients and ground loops
• Reduces board space requirements due to its small size
• Provides efficient signal transfer between isolated circuits
• Complies with environmental regulations

Specifications:

The PC817A/PC817X1NSZ9F optocoupler features a high isolation voltage, typically several kilovolts. The current transfer ratio (CTR) is between 50% and 600%, indicating the efficiency of signal transfer. The input is an LED, and the output is a phototransistor. The device is available in a DIP-4 package. It is designed for operation within a specified temperature range. The forward voltage of the LED is typically around 1.2V, and the collector-emitter voltage of the transistor is typically around 80V.