H11AA33SD

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

Optoisolators provide electrical isolation, enabling signals and power to be transmitted between two circuits without direct electrical contact. Among them, the H11AA33SD optoisolator is a transistor, photovoltaic output optoisolator, which applies photoelectric Coupling to transfer electrical signals among two different circuits. The product is designed with a bidirectional single channel, output by Darlington, and the optoelectronic isolation reaches nothing less than 5000 V, guaranteeing that two circuits can be completely isolated. Besides, the response time of H11AA33SD is fast, making it suitable to be used in communication and control systems.

The general principle of the H11AA33SD can be outlined in five steps.

The first step is an LED embedded in the optoisolator. It is driven by a current sourced from the current input terminal of the optoisolator. The LED is packaged in a transparent epoxy, allowing the photo signals to be transmitted out of the package and be detected by a photodiode or phototransistor within the device.

The second step is the photodiode or phototransistor. It converts the received optical signals into electrical signals and feeds those to the base of the output transistor.

The third step is the output transistor. It is a high-gain NPN transistor and into its emitter the third lead terminal is connected. With the applied voltage, the collector current Ic can be controlled.

The fourth step is the load. The collector current Ic will be conducted through the load to the external circuit.

The fifth step is the reset of the output. When the LED current drops, the output transistor stops conducting, and the opto-isolator is reset.

H11AA33SD optoisolator can be used in a wide field of applications. It can be used as an isolation amplifier when the H11AA33SD has the output mode of sinking current; it can also be used as photoresistor control, optical fiber communication, and remote control. Plus, the fast response speed makes it suitable to be used in the performance demanding circuits in communication and control systems.

To sum up, H11AA33SD is a transistor, photovoltaic output optoisolator that provides photoelectric coupling for transmitting electrical signals among two different circuits. Residing in its isolation of 5000 V, it assures that the two circuits complete electrical isolation. The fast response speed of the optoisolator has enabled it to be applied in wide ranges such as remote control, optical fiber communication, etc, especially in performance demanding circuits in communication and control systems.

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