SFH1617A-3X016

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Optoisolators are isolation devices that are used to increase electrical safety. They provide galvanic isolation between high voltage and low voltage circuits, or between electronic signals and power supplies. The SFH1617A-3X016 optoisolator is a particular type of optoisolator, belonging to the Transistor, Photovoltaic Output class. In this article, we will discuss the application field and working principle of this optoisolator in detail.

The SFH1617A-3X016 optoisolator is primarily designed for switching and logic applications. Its small size, gallium arsenide (GaAs) Infrared Emitting Diode (IRED), and phototransistor transistor make it suitable for such applications. This device is also well suited for applications requiring a wide operating temperature range, from –40°C to +90°C. This device comes with an insulated 4-pin plastic package, with pin 1 labeled Co (cathode), pin 2 labeled E (emitter), pin 3 labeled C (collector), and pin 4 labeled Ao (anode).

The working principle of the SFH1617A-3X016 optoisolator is based on a simple optical isolation between the input and output stages. The IRED sits in between the two stages and is powered by the voltage applied to the Co and Ao pins. When the IRED is in use, it emits infrared light which is then detected by the phototransistor. The phototransistor then amplifies the signal and sends it to the output stage. In this way, the input signal is isolated from the output stage, providing electrical safety for the user.

The SFH1617A-3X016 optoisolator has numerous advantages over other types of optoisolators. Its operating temperature range is wide, while its on-state and off-state are both fast and reliable. Additionally, it features a low voltage drop of 4 volts, making it suitable for use with low voltage applications. Furthermore, its wide storage operating temperature range of –65°C to 125°C allows it to be used in hazardous environments.

In summary, the SFH1617A-3X016 optoisolator is a transistor, photovoltaic output optoisolator that is specifically designed for switching and logic applications. It uses an infrared emitting diode and phototransistor to create an isolated input and output stage, allowing electrical safety to be maintained. The device also features a wide operating temperature range, low voltage drop, and wide storage temperature range. All these features make it a great choice for a variety of applications.

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