H11A817DSD

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Optoisolators, also known as photocouplers, are components that provide electrical isolation between two isolated circuits. These components can be used in many applications for safety, protection, reliability, and data integrity. One of the most popular optoisolators is the transistor, photovoltaic output optoisolator, denoted as the H11A817DSD.

The most salient feature of the H11A817DSD is its superior electrical isolation. This device achieves a minimum isolation voltage of 3750 Vrms between the input and output circuits. The input-to-output isolation is accomplished via a GaAs infrared LED coupled optically to an integrated photovoltaic output circuit, which contains a phototransistor output. The LED and phototransistor have a maximum current rating of 130mA, respectively.

The H11A817DSD has design features to protect the user, such as a short circuit protection capacitor. This component keeps the voltage over the LED within its safe operating range of 1.2V/30mA, providing effective protection against excessive power consumption in the event of a short circuit. Additionally, the device also contains a built-in bleeder resistor, which limits the speed of the input short circuit. This built-in protection is especially beneficial when high-speed pulse signals are used as the input.

The H11A817DSD is an ideal optoisolator for isolating two circuits to protect them from interference and interruption. It is primarily used for controlling gate signals, such as enabling LED indicators, relays, and other logic devices. The optoisolator is also useful in the protection of solid-state controllers. Additionally, the H11A817DSD can be used in power circuits, audio equipment, and automation systems to effectively isolate input signals from outputs.

The H11A817DSD optoisolator operates on a photovoltaic principle. When light from the LED is incident on the integrated photovoltaic cell, the light’s energy is converted into electrical energy, allowing current to flow between the input and output circuits. The built-in current limiting function improves the stability of the output current signal. This device is designed to be triggered by a minimum input current of 50mA.

The H11A817DSD features an open collector output design. This type of output allows for greater flexibility and compatibility with circuits, as the device can be easily connected with other transistors, relays, or integrated circuits. The device’s open collector output also limits the amount of current that passes through the load resistance.

The H11A817DSD is a versatile optoisolator that is suitable for use in many applications. Its superior isolation, short circuit protection, and open-collector design enable this device to effectively protect and control circuits while maintaining high accuracy and reliability. This device is an excellent choice for safe and efficient circuit isolation.

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