EL357N(F)(TA)-G

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Optoisolators are devices designed to provide electrical isolation between two circuits by using light as the medium for signal transmission. The EL357N(F)(TA)-G optoisolator is an isolated transistor output module with photovoltaic output. It combines a gallium arsenide infrared emitting diode (IRED) with a monolithic silicon phototransistor detector and a base-emitter isolation barrier in a small four-pin dual-in-line package.

Features

The EL357N(F)(TA)-G features a variety of advantages that make it a versatile and useful component for a range of applications. It has a wide operation temperature range from -40℃ to 85℃, a high switching speed, and a low output saturation voltage of 0.2V. The optoisolator has a maximum isolation voltage of 1500Vrms, and a forward current of 0.3mA, which makes it suitable for use in switching applications. The optoisolator also has excellent protection against transients, with a maximum pulse width of 100µs.

Application Field

The EL357N(F)(TA)-G optoisolator is suitable for a variety of applications, including motor control and drive systems, power supplies, process control systems, converters, and protective relay circuitry. It is commonly used in industrial automation systems, automotive systems, and medical equipment. The wide operation temperature range and low saturation voltage make it particularly useful for applications that must operate under extreme conditions.

Working Principle

The EL357N(F)(TA)-G optoisolator works by using the principles of photoelectricity. Light from the IRED diode is detected by a Silicon Photo-Transistor. The photo-transistor is then used to switch the output on or off, depending on the current level of the diode. When the diode current is low, the output is switched off, and when the diode current is high, the output is switched on. This process provides signal and power isolation between two circuits.

The optoisolator\'s aluminum baseplate provides the electrical connection between the IRED diode and the phototransistor detectors. The optoisolator is then soldered onto the PCB, making sure that the parts are firmly connected and the part orientation is correct. The optoisolator can then be wired to the other components of the circuit in order to route signals and power.

Conclusion

The EL357N(F)(TA)-G optoisolator is a reliable and versatile component for electrical isolation between two circuits. It has a wide operation temperature range, a high switching speed, and a low output saturation voltage. It is suitable for a wide range of applications, including motor control and drive systems, power supplies, process control systems, converters, and protective relay circuitry. It is easy to install, and requires no additional components for operation.

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