H11A617D300W

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Optoisolators - Transistor, Photovoltaic Output

The H11A617D300W optoisolator consists of an infrared Emitter-detector pair coupled to a bipolar transistor output stage. It is designed to provide a high degree of electrical isolation between input and output, while controlling the output voltage.

Application Field

The H11A617D300W is typically used in applications such as computer peripherals, communication and control systems, power electronics, and other industrial equipment requiring robust performance and high speed switching. It can be used in applications requiring short rise-time loads such as relays, solenoids, and motors and other applications requiring base-emitter voltage regulation. The device is also suitable for alternating current loads.

Working Principle

Using the principle of optoelectronic coupling, the H11A617D300W optoisolator has a light-emitting diode (LED) that transmits light to the base of the transistor which is used for controlling current and voltage. When a positive voltage is applied to the LED, current flows and the LED emits light. The light from the LED is coupled via a transparent window to a phototransistor, which is located in the detector. The light activates the phototransistor, allowing current to flow from collector to emitter and the phototransistor is switched on. This allows current to control voltage on the base of the transistor.

The output of the H11A617D300W optoisolator is limited to a total voltage of 30 volts. This is due to the current limitation of the phototransistor. The maximum output voltage is determined by the current through the LED. The voltage at the base-emitter junction of the transistor is regulated and limited to between 0.2V and 0.3V.

The H11A617D300W optoisolator has a reverse voltage protection of 50 volts. This allows the device to handle reverse voltage and protects the LED from damage due to reverse currents. The device also has a forward current protection of 1.5A which prevents the LED from being overdriven and ensures a safe operation.

The H11A617D300W optoisolator is a fast switching system with a rise time of just 25 nanoseconds and a fall time of 10 nanoseconds. The device can control up to 5A of current and the collector-emitter breakdown voltage is 70V. The maximum power dissipation for the device is 1.4 watts.

Conclusion

The H11A617D300W optoisolator is an ideal solution for applications that require high speed switching, high voltage isolation, and low power dissipation. Its low voltage drop and wide operating temperature range make it a versatile device for many industrial and consumer applications. The key features and characteristics of the device ensure reliable operation in several applications.

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