The EL816S(I)(TA) is a high-performance single channel phototransistor optocoupler manufactured by Everlight Electronics Co., Ltd. It is designed to provide electrical isolation between input and output circuits while enabling signal transfer. This optocoupler is commonly used in a variety of applications where isolation and signal transmission are essential.

Applications:

• Industrial Control Systems: Provides isolation between control circuits and high-voltage power circuits.
• Power Supplies: Used for feedback control in switching power supplies to isolate the primary and secondary sides.
• Digital Logic Isolation: Isolates sensitive digital circuits from noisy or high-voltage environments.
• Microcontroller Interfaces: Protects microcontrollers by isolating them from external devices.

Features:

• High Isolation Voltage: Offers a high isolation voltage, ensuring safety and preventing electrical interference.
• Current Transfer Ratio (CTR): Provides a specified current transfer ratio, enabling efficient signal transmission.
• Compact Package: Available in a compact package, saving valuable board space.
• High Collector-Emitter Voltage: Supports a high collector-emitter voltage, suitable for various voltage levels.
• Safety Approvals: Often comes with safety certifications such as UL, VDE, and CSA for guaranteed safety standards.

Benefits:

• Enhanced Safety: High isolation voltage protects users and equipment from hazardous voltages.
• Noise Immunity: Provides excellent noise immunity by preventing ground loops and electrical noise from propagating between circuits.
• Compact Design: Small package size allows for integration in space-constrained applications.
• Reliable Performance: Offers consistent and reliable performance over a wide range of operating conditions.

Additional Details:

The EL816S(I)(TA) consists of an infrared light-emitting diode (LED) and a phototransistor. When current flows through the LED, it emits infrared light, which activates the phototransistor, allowing current to flow in the output circuit. The current transfer ratio (CTR) is a key parameter that specifies the ratio of output collector current to input LED current. The isolation voltage is the maximum voltage that the optocoupler can withstand between the input and output without electrical breakdown.

This optocoupler is designed to meet stringent safety standards, ensuring reliable isolation and protection in various applications. Its robust design and high performance make it a popular choice for isolating and interfacing circuits in industrial, commercial, and consumer electronics.