EL817(S1)(A)(TU)-G

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Optoisolators are components that use optical isolation to electrically isolate their input and output. This makes them useful in applications where electrical isolation is required. The EL817(S1)(A)(TU)-G is an optoisolator created by Vishay that is categorized under the Transistor, Photovoltaic Output classification. This device makes use of photovoltaic output technology, using a LED to transmit light to activate the photovoltaic transistor in order to complete the circuit.

Application Field

The EL817(S1)(A)(TU)-G is designed with ruggedness, reliability, and durability in mind, and therefore it is a robust optoisolator suitable for many harsh applications. This device can sustain high currents as well as excess operating temperatures, making it suitable for use in industrial and automotive applications. It also features low on-state saturation voltage and maximum collector-emitter saturation voltages. These specs ensure that the device is reliable and efficient at transmitting electrical and optical signals when used in various applications.

Furthermore, this component is a great choice for applications that require reliable and efficient industry compliance due to its compliance with various safety regulations. These include EN60825-1 light emission regulation, EN61010 equipment safety standards, as well as EN60950 electric safety standards. All these ensure that the EL817(S1)(A)(TU)-G is a safe and reliable optoisolator for use in even the most demanding of applications.

Working Principle

The EL817(S1)(A)(TU)-G optoisolator works on the principle of optical isolation, with the LED acting as a light source to transmit light through a path, activating the photovoltaic transistor. This allows for the current flowing from the input side of the optoisolator to be electromagnetically induced to the output side. This process makes it possible for electrical signals to be transmitted through the device while ensuring a strong electrical isolation between the input and output stages, protecting internal circuits and devices from damage caused by electrostatic discharges.

The LED is driven by the input current, with the light beams emitted activating the photovoltaic transistor in order to create a current in the collector-emitter path. This current is then used to activate the output circuit, which then responds adequately to the necessary signal. Thanks to its low saturation voltage as well as its compliance with industry safety standards, the EL817(S1)(A)(TU)-G is able to efficiently trigger the output circuit to produce an output signal, guaranteeing reliable, efficient, and safe operation.

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