The MOC211 is a high-voltage single-channel phototransistor optocoupler. This device consists of a gallium arsenide infrared emitting diode driving a silicon phototransistor in a 6-pin DIP package. It is designed for high voltage applications requiring electrical isolation between input and output circuits.

Applications

• AC line/digital logic isolation
• Solid state relays
• Switch mode power supplies
• Motor control
• Digital control of analog circuits

Features

• High isolation voltage (5.3 kV RMS)
• Current transfer ratio (CTR) of 20% minimum at IF = 10 mA
• High collector-emitter voltage (300 V)
• Operating temperature range: -55°C to +100°C
• UL recognized (File # E90700)
• VDE approved (File # 40088)

Benefits

• Provides electrical isolation in high voltage applications, protecting sensitive circuitry from voltage spikes and surges.
• Enables safe control of high-voltage circuits from low-voltage control signals.
• Reduces the risk of electrical shock and equipment damage.
• Offers a compact and reliable solution for isolation requirements.
• Improved system performance due to the elimination of ground loops.

Additional Details

The MOC211 optocoupler's high isolation voltage allows for safe interfacing between circuits operating at different voltage levels. The phototransistor output provides a simple and reliable means of transferring digital signals across the isolation barrier. The CTR ensures sufficient output current for driving subsequent circuits. The device is commonly used in industrial automation, power supplies, and other applications requiring robust electrical isolation. The MOC211 family offers various CTR ranges, enabling designers to select the optimal device for their specific application. The device package is a standard 6-pin DIP, making it easy to integrate into existing designs. Its robust construction and wide operating temperature range ensure reliable operation in harsh environments.