The MOCD208 is a dual-channel phototransistor optocoupler. It consists of two gallium arsenide infrared emitting diodes optically coupled to two silicon phototransistors. It is designed for applications requiring electrical isolation between input and output circuits, providing a safe and reliable method of signal transfer without a direct electrical connection.

Applications

• Industrial control systems
• Power supplies
• Telecommunications equipment
• Computer peripherals
• Medical equipment

Features

• Dual channel optocoupler
• High isolation voltage
• CTR (Current Transfer Ratio) ranging from 20% to 300%
• Low input current
• High BVCEO (Collector-Emitter Breakdown Voltage)
• Operating temperature range of -55°C to +100°C

Benefits

• Electrical isolation: Provides electrical isolation between input and output, protecting sensitive circuits from high voltage transients and noise.
• Noise reduction: Reduces noise and interference in signal transmission.
• High reliability: Offers high reliability and long operating life.
• Compact design: The dual-channel configuration in a single package saves board space.
• Versatile application: Suitable for a wide range of applications due to its robust electrical characteristics.

Additional Details

The MOCD208 typically has an isolation voltage of several thousand volts (e.g., 5kV). The current transfer ratio (CTR) varies depending on the specific part number and operating conditions. The forward voltage of the input diode is typically around 1.2V. The output transistor can typically switch voltages up to 30V or higher depending on the particular grade. It is offered in a DIP package. This device is commonly used to interface between microcontrollers and higher voltage systems, and in applications requiring isolation from ground loops. Its operating temperature makes it suitable for harsh industrial environments.