H11A3SM

Optoisolators are electronic devices used to provide electrical isolation between components within a circuit. They are often used in applications where the reliability of the circuit is critical and can be used to isolate circuits from high-voltage or hazardous noise sources. The H11A3SM is a type of optoisolator that uses a transistor and photovoltaic output to offer excellent electrical isolation and signal integrity.

The H11A3SM is a single-way photocoupler that provides a high level of electrical isolation, with noise suppression capabilities, between two circuits, which can operate at a range of voltages. The device includes a LED light emitter, which is coupled with a phototransistor and connected to a floating second output, providing isolation between the two circuits.

The LED emits light when a signal is applied, which causes the phototransistor to open. The phototransistor then triggers the opening of a thyristor or a transistor which is then used to conduct current within the circuit. This reduces interference and noise, providing a reliable and consistent output. The floating second output also prevents spikes which may be generated from circuit noise, further protecting the downstream devices.

The H11A3SM is suitable for a range of applications and is typically used in AC/DC converters, power supplies, microcontrollers, programmable logic controllers (PLCs), industrial touch screens, and communication systems. As the device is relatively inexpensive and offers excellent accuracy and signal integrity, it is also used in low-cost consumer products. Where high-noise environments are present, the H11A3SM is an ideal choice for protecting delicate circuits and components.

The H11A3SM optoisolator is a great choice for providing effective circuit isolation and signal integrity in most applications. The device is reliable, inexpensive and can be easily integrated within various types of circuitry, offering excellent electrical isolation and noise suppression capabilities. The device is available in a number of configurations, making it suitable for many applications and environments.