CNY1713SD

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A CNY1713SD optoisolator, often referred to as an opto-transistor, is an optoelectronic coupling device designed to electrically isolate a high-voltage circuit and a low-voltage circuit. It is mainly used for voltage monitoring, short-circuit protection, and fault tracking applications. This optoisolator consists of an LED coupled with an optically coupled IC. The LED, powered by a high-voltage circuit, activates the optically coupled IC, which is connected to the low-voltage circuit, providing total electrical isolation between the two circuits.

Application Field

The CNY1713SD optoisolator is primarily used for voltage monitoring, short-circuit protection, and fault tracking applications. As it completely isolates the high-voltage circuit from the low-voltage circuit, it can be used to protect sensitive low-voltage components from overvoltage and other high-voltage transients that can cause damage to them. Additionally, its large creepage distance and electrical isolation capabilities make it suitable for use in harsh industrial environments.

Working Principle

The CNY1713SD optoisolator consists of a photovoltaic output type LED and an optically coupled IC. It features wide working voltage (14 to 30V) and maximum isolation voltage of 5kVAC and 12kVDC, giving it excellent electrical isolation properties. When the LED is activated by the high-voltage input to the optoisolator, a flow of current is generated in the optically coupled IC, producing a corresponding output signal from the low-voltage side. As the output signal has been optically isolated from the input signal, this circuit provides total electrical isolation between the two circuits. The CNY1713SD optoisolator also features a low leakage current of 200nA maximum and a short LED on-state current of 1.6mA maximum.

Conclusion

The CNY1713SD optoisolator, or opto-transistor, is an optoelectronic coupling device designed to electrically isolate a high-voltage circuit and a low-voltage circuit. It features wide working voltage, excellent electrical isolation properties, high-voltage transients protection capabilities, and low leakage current and LED on-state current. It is mainly used for voltage monitoring, short-circuit protection, and fault tracking applications, making it ideal for industrial use.

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