CNY17-3-300E

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Optoisolators, also known as optocouplers, isolators, photocouplers, and isolator opto-electronic coupling devices, are an essential component used in electronics projects. The CNY17-3-300E is a type of optoisolator, more specifically classified as a Transistor, Photovoltaic Output optoisolator.

Optoisolators employ a LED and a photoresponsive device (which may be a photodiode, photo-Darlington pair, FET, etc.) arranged in such a fashion that light emitted from the LED triggers the photoresponsive device. The photoresponsive device is electrically isolated from the LED, meaning it is not connected directly. This establishes an electrical barrier between the input of the optoisolator and the output device, electric and dusty currents, voltage transients, and electro-magnetic interference (EMI) disrupted.

The CNY17-3-300E features an insulation between the input and output terminals of up to 300V AC / DC. This optoisolator can handle up to 300mA of current when it is triggered. It is featured with an internal UV-Filter for better safety, which provides isolation of up to 1.7kV, and is UL Recognized Component.

The CNY17-3-300E optoisolator is contained in a 4-pin SO-16 package, and it has the following pin assignments: an emitter pin (E), a collector pin (C), a photodiode (D), and a base pin (B). It is worth noting that the base pin of this particular optoisolator is the trigger point. In other words, a current flow at the B pin will trigger the optoisolator on or off.

The working principle behind the CNY17-3-300E optoisolator is quite simple. An external input current is applied to the B pin, which will be the trigger point. This current flow will be detected by the photodiode, which will in turn emit light. This light will be picked up by the photoresponsive device, which will then turn the output device on. In this way, the output device is isolated from the input device even when the PNP transistor circuit is fully ON.

The CNY17-3-300E optoisolator has a wide range of applications, particularly in industrial applications. It can be used in motor control, AC drives, relay drivers, AC switching circuit, intelligent relay, and lighting controls systems, among many others. It can also be used in medical equipment, audio amplifiers, ATE equipment, and DC-DC power converters.

The CNY17-3-300E optoisolator is a high-performance, reliable device designed to provide electrical isolation between the input and output circuits. It is capable of handling up to 300mA of current, and is UL recognized. USING this device, an electrical barrier is established, blocking out electric and dusty currents, voltage transients, and electro-magnetic interference (EMI). This device has a wide range of uses in many different industries, making it a highly useful tool for nearly any electronic project.

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