CNY172FM

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Optoisolators are electronic devices used to provide electrical isolation between two parts of a circuit, or between two different circuits. They use light as a way to transmit signals, either as an input to a circuit or as an output from a circuit. The CNY172FM is one type of optoisolator, specifically one with a transistor, photovoltaic output. Understanding its application field and working principle is therefore important in order to understand how optoisolators work.

Application Field and Working Principle

The CNY172FM is typically used to control the low voltage loads in switching applications or as an isolation device in power circuit applications. Its application field is mainly in low power circuits such as consumer electronics, automotive electronics, industrial control, telecommunication, and instrumentation. This type of optoisolator has a photovoltaic output, which means that the light emitted from the input LED is converted into electrical power at the output transistor. The working principle is fairly simple: when the input LED is powered, it emits visible light that is detected by the photovoltaic diode and converted into an electric current, which is then used to activate the output transistor and turn on or off the output load.

The CNY172FM is characterized by a wide range of operating temperature, from -40 to 80°C, and an operating voltage of up to 30V DC. It also features an internal transient suppression diode that prevents damage due to voltage spikes and transients. This optoisolator has a high current and power handling capability, and it can provide isolation up to 3300V AC. It is also compatible with a variety of signals, including TTL, CMOS, AF, audio, and video.

Advantages and Disadvantages

The CNY172FM has several advantages over other types of optoisolators. It is relatively inexpensive and it is capable of handling high currents and high power. It provides high isolation voltage and it is relatively easy to use and integrate into other circuits. Additionally, it is compatible with a wide variety of signal types, allowing it to be used in a variety of applications.

However, the CNY172FM does have some disadvantages as well. It is not suited for high-speed applications, as its response time is relatively slow. Additionally, the internal transient suppression diode can cause an increase in the forward voltage drop, which can lead to a decrease in efficiency. Finally, the CNY172FM does not provide reverse isolation and does not have a low EMC noise immunity level.

Conclusion

The CNY172FM is a type of optoisolator with a transistor, photovoltaic output. It is typically used to control low voltage loads in switching applications or as an isolation device in power circuit applications. It has a wide operating temperature range and it is relatively inexpensive. However, it is not suited for high-speed applications and it does not provide reverse isolation or a low EMC noise immunity level. Understanding its application field and working principle is therefore important in order to understand how optoisolators work.

The specific data is subject to PDF, and the above content is for reference