The PC817X4CSP9F is a high-isolation voltage, surface-mount optocoupler manufactured by Sharp Microelectronics. It features a gallium arsenide infrared emitting diode (GaAs IRED) optically coupled to a silicon phototransistor. This configuration provides electrical isolation between the input and output circuits, making it ideal for applications requiring safety isolation or noise immunity.

Applications

• Power supplies
• Industrial control equipment
• Telecommunication equipment
• Measuring instruments
• Signal transmission between circuits with different ground potentials

Features

• High isolation voltage (typically 5000Vrms)
• Compact surface-mount package
• Current transfer ratio (CTR) of 50% to 600%
• Low input current (typically 5mA)
• High collector-emitter voltage (typically 80V)
• Operating temperature range: -30°C to +110°C

Benefits

• Provides electrical isolation for safety and noise immunity
• Saves board space due to its compact size
• Offers a wide range of CTR for various applications
• Reduces power consumption due to low input current requirement
• Suitable for high-voltage applications
• Ensures reliable performance over a wide temperature range

Additional Details

The PC817X4CSP9F optocoupler is designed for high-density mounting and features a gull-wing lead design for easy soldering. The current transfer ratio (CTR) is an important parameter that specifies the ratio of the output collector current to the input LED current. The wide CTR range of this device allows for flexibility in circuit design. The high isolation voltage provides robust protection against voltage transients and ground loops. This optocoupler is commonly used in switching power supplies to isolate the primary and secondary sides, ensuring the safety of the user and the connected equipment. It can also be used in industrial control systems to isolate sensitive control circuitry from noisy power circuits. Its small size and high performance make it a versatile component for a wide range of applications. It conforms to various safety standards, including UL, cUL, and VDE, further enhancing its suitability for safety-critical applications.