EL817(B)-F

What is EL817(B)-F?

EL817(B)-F is an optocoupler, also known as an optically coupled isolator, which is an electronic device designed to transfer electrical signals between two isolated circuits by using light. It is an 8-pin dual-channel bidirectional photocoupler, with a dual-channel phototransistor output, and a forward current transfer ratio (CTR) of 250%. EL817(B)-F is designed to provide isolation between two electrical circuits, allowing for communication between the two circuits without allowing any current to flow between them. It is commonly used in industrial applications such as industrial automation, process control, and motor control. EL817(B)-F is a popular optocoupler with a wide range of applications, due to its low cost, reliable performance, and fast switching time.

Overview EL817(B)-F

Package: 8-pin DIP

Isolation Voltage: 5000Vrms

Operating Temperature Range: -40°C to +85°C

Forward Current Transfer Ratio: Min. 250% (@If=10mA, Vce=5V)

Reverse Current Transfer Ratio: Min. 50% (@If=10mA, Vce=5V)

Current Transfer Ratio Temperature Coefficient: Max. 0.5%/°C

Switching Time: Max. 1.5µs

Storage Temperature: -55°C to +150°C

Lead Soldering Temperature: 260°C for 5 seconds

How to use EL817(B)-F?

EL817(B)-F is typically used to isolate signals in industrial applications. It is used in a variety of situations, such as when signals need to be transmitted between two isolated circuits, when signals need to be isolated from a noisy environment, or when signals need to be isolated from high voltages.

To use EL817(B)-F, simply connect the pins on the optocoupler to the two circuits in need of isolation. Make sure to connect the pins correctly according to the optocoupler’s datasheet. The optocoupler should then be able to provide electrical isolation between the two circuits while allowing signals to be transmitted between them.

Pros & Cons

EL817(B)-F is a popular optocoupler due to its low cost, reliable performance, and fast switching time. It is also easy to use and provides a high degree of isolation, making it a great choice for many applications.

The main downside to EL817(B)-F is that it is not suitable for high-speed applications, due to its limited switching time. Additionally, the current transfer ratio can vary significantly with temperature, making it difficult to accurately predict signal strength at different temperatures.

FAQ

1. What is the forward current transfer ratio (CTR) of EL817(B)-F?

The forward current transfer ratio (CTR) of EL817(B)-F is 250%.

2. What are the benefits of using EL817(B)-F?

EL817(B)-F is a popular optocoupler due to its low cost, reliable performance, and fast switching time. It is also easy to use and provides a high degree of isolation, making it a great choice for many applications.

3. What are the downsides of using EL817(B)-F?

The main downside to EL817(B)-F is that it is not suitable for high-speed applications, due to its limited switching time. Additionally, the current transfer ratio can vary significantly with temperature, making it difficult to accurately predict signal strength at different temperatures.

4. What type of package does EL817(B)-F come in?

EL817(B)-F comes in an 8-pin DIP package.

Conclusion

EL817(B)-F is a popular optocoupler due to its low cost, reliable performance, and fast switching time. It is an 8-pin dual-channel bidirectional photocoupler, with a dual-channel phototransistor output, and a forward current transfer ratio (CTR) of 250%. It is designed to provide isolation between two electrical circuits, allowing for communication between the two circuits without allowing any current to flow between them. EL817(B)-F is commonly used in industrial applications such as industrial automation, process control, and motor control.