EL817(S1)(C)(TU)

What is EL817(S1)(C)(TU)?

The EL817(S1)(C)(TU) is a type of optocoupler that is used to isolate electrical signals between two circuits. It works by using a voltage-controlled LED light source to activate a phototransistor within the device. This is done by applying an input voltage to the LED, which in turn causes the phototransistor to conduct current.

The optocoupler can be used to protect a circuit from noise and spikes, as well as to isolate it from other circuits. It is also used to extend the range of a signal, as the LED can be located further away from the phototransistor. The EL817(S1)(C)(TU) optocoupler is rated for a maximum power of 1 watt and a continuous current of 25mA. It is an ideal choice for applications such as motor control, medical equipment, instrumentation, and industrial automation.

EL817(S1)(C)(TU) Overview

The EL817(S1)(C)(TU) is a semiconductor optocoupler from Vishay Semiconductor that provides a high degree of electrical isolation between two circuits. It has an integrated GaAs infrared light-emitting diode and an NPN silicon phototransistor. The optocoupler is capable of providing isolation voltage of up to 5000 Vrms for a single-channel configuration, with a guaranteed minimum of 1500 Vrms. The optocoupler has a high current transfer ratio (CTR) of up to 500% at an input current of 5 mA. It is suitable for applications such as signal and power isolation, pulse and digital signal isolation, and interface conversion. The EL817(S1)(C)(TU) is available in a 4-pin mini-flat package.

How to Use?

The EL817(S1)(C)(TU) optocoupler should be connected to the input circuit by connecting the cathode of the LED to the input voltage source and the anode of the LED to the ground. The output circuit should be connected to the collector of the phototransistor and the emitter of the phototransistor should be connected to the ground. To operate the optocoupler, the input voltage should be applied between the anode and cathode of the LED. This will cause the LED to emit light, which will be detected by the phototransistor, causing it to conduct and transfer the input voltage to the output circuit.

Advantages

The EL817(S1)(C)(TU) optocoupler offers several advantages. It provides a high level of electrical isolation between two circuits, allowing sensitive circuitry to be protected from interference. It has a high current transfer ratio, which allows it to accurately transfer signals with minimal distortion. It is also very small, making it suitable for use in space-constrained applications. Additionally, it has a wide range of operating temperatures, allowing it to be used in a variety of environments.

Disadvantages

The EL817(S1)(C)(TU) optocoupler has some disadvantages. It is relatively expensive, making it unsuitable for applications that require low cost. Additionally, it is limited to a single-channel configuration, so it may not be suitable for applications that require multiple channels. It also has a relatively low breakdown voltage of 5000 Vrms, which may be insufficient for some applications.

FAQ

Q: What is the maximum isolation voltage of the EL817(S1)(C)(TU) optocoupler?
A: The EL817(S1)(C)(TU) optocoupler has a maximum isolation voltage of 5000 Vrms.

Q: What is the minimum guaranteed breakdown voltage of the EL817(S1)(C)(TU) optocoupler?
A: The EL817(S1)(C)(TU) optocoupler has a minimum guaranteed breakdown voltage of 1500 Vrms.

Q: What is the maximum current transfer ratio of the EL817(S1)(C)(TU) optocoupler?
A: The EL817(S1)(C)(TU) optocoupler has a maximum current transfer ratio of 500% at an input current of 5 mA.

Q: What package is the EL817(S1)(C)(TU) optocoupler available in?
A: The EL817(S1)(C)(TU) optocoupler is available in a 4-pin mini-flat package.

Conclusion

The EL817(S1)(C)(TU) is a semiconductor optocoupler from Vishay Semiconductor that provides high electrical isolation between two circuits. It has a high current transfer ratio, wide operating temperature range, and small package size, making it suitable for a variety of applications. It is relatively expensive and has a limited single-channel configuration, but is capable of providing up to 5000 Vrms of isolation voltage.