FOD817ASD

The FOD817ASD is an optocoupler manufactured by ON Semiconductor, designed for applications requiring electrical isolation between input and output circuits. This device is particularly useful in environments where high voltage and low voltage circuits need to be interfaced safely.

Key Features:

1. Isolation Voltage: The FOD817ASD provides a high isolation voltage of up to 5,000 Vrms, ensuring that the input and output sides are electrically isolated, which is crucial for protecting sensitive components from high voltage spikes.

2. Input Configuration: The optocoupler features a gallium arsenide (GaAs) infrared LED as the input component. This LED emits infrared light when current flows through it, which is the basis for the optocoupling mechanism.

3. Output Configuration: The output side consists of a phototransistor that is sensitive to the infrared light emitted by the LED. When the LED is activated, the phototransistor conducts, allowing current to flow through the output circuit.

4. Transfer Characteristics: The FOD817ASD has a high current transfer ratio (CTR), typically ranging from 100% to 600% at a specified input current. This means that a small input current can control a much larger output current, making it efficient for signal transmission.

5. Temperature Range: The device operates effectively over a wide temperature range, typically from -40°C to +100°C, making it suitable for various industrial and consumer applications.

6. Package Type: The FOD817ASD is available in a compact 4-pin DIP (Dual In-line Package) configuration, which facilitates easy integration into circuit boards and helps save space in electronic designs.

7. Applications: This optocoupler is commonly used in power supply circuits, signal isolation, data communication, and in systems where noise immunity is critical. It is also suitable for interfacing microcontrollers with high-voltage systems.

8. Safety Standards: The FOD817ASD complies with various safety standards, making it a reliable choice for applications that require adherence to strict safety regulations.

Summary:

The FOD817ASD from ON Semiconductor is a versatile optocoupler that provides reliable electrical isolation, high current transfer capabilities, and a wide operating temperature range. Its compact design and compliance with safety standards make it an ideal choice for a variety of applications in both industrial and consumer electronics.