EL817(S)(C)(TB)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The EL817 optoisolator is a type of isolation component commonly used for electrical insulation. It isolation which isolates a circuit from the other by using a light-emitting diode (LED) and a photodetector to provide insulation between two circuits. It help in providing good protection against electromagnetic interference (EMI) and high voltage surges due to its high isolation voltage and power dissipation characteristics. The output terminals of the EL817 are available in both transistor and photovoltaic output versions.

The EL817 isolate low voltage control signals from higher voltage circuits, operates with a minimum 3.3V peak input voltage and delivers up to a 2A maximum output current. It has an operating temperature range of -40°C to +85°C, allowing it to be used in both extreme temperature and industrial environment. Additionally, it offers a very fast response time of 10ns typical, making it ideal for use in high-speed interfaces.

The EL817 is available in a number of package models, such as an smplfier transistor-output package (EL817S), a surface mount transistor-output package (EL817C) and a surface mount photovoltaic-output package (EL817TB).

The transistor output model has a power transistor output with a collector current range from 0 to 100mA, allowing it to be used in low power circuits. The photovoltaic output model can be used in higher power applications and has a collector current ranging from 1mA to 2A. The photovoltaic output version has a higher speed response time of 8ns typ.

The main purpose for these devices is to provide electrical isolation, which is the separation of two circuits with no electrical path provided. This isolation is achieved by physical means, such as an optically coupled LED and phototransistor, an electrically coupled transformer, or a ceramic substrate. Isolation components like the EL817 are used to transfer signals from one side of a circuit to the other, without the possibility of electrical interaction between the respective circuits.

The EL817 operates with an LED and a photodetector, with the photodetector being used to detect the presence of light from the LED, applied to the collector of the optocoupler. The LED is then forward biased and emits light when current flows through it, and the photodetector is used to convert the light into electrical current. This electrical current is then amplified and inverted to provide the output from the optocoupler. The result is the isolation between the input and output circuits, ensuring that the electrical signals remain electrically isolated from one another.

The EL817 is a versatile optocoupler which offers electrical isolation, fast response time, low power consumption, and robust performance in temperatures up to 85 degrees Celsius. The different package options available makes it suitable for a wide range of applications, ranging from consumer electronics and power supplies, to industrial and automotive applications.

The specific data is subject to PDF, and the above content is for reference