CNY172SD

Optoisolators - Transistor, Photovoltaic Output, are utilized within various application fields where isolation is a proof measure. The CNY172SD device is especially designed to address such needs.

Overview

The CNY172SD is designed for isolation and driving of TTL loads in different application fields. It serves as an electronic switch, controlling the current flow on-off. The device is composed of a GaAs infrared LED optically coupled with an integrated, high gain, high collector output voltage Darlington-Transistor pair.The CNY172SD offers an optimum performance in terms of power dissipation and efficiency combination.

Basic Features

The basic features of the CNY172SD includes the following:

• High voltage isolation up to 3000 VRMS
• External power supply for logic input stage
• Switchable operating voltage for input and output stages
• High gain output current
• Low input current
• Fast response to dynamic signals

Application Fields and Working Principle

The CNY172SD can be effectively utilized for a variety of application fields including automotive, telecom and industrial needs. The device is able to provide high isolation and driving of TTL loads in specific applications like switching of static relays, control of DC motors, HVAC or switching of LEDs. Its working principle is based on the isolation power optocoupler, which includes a non-depletable resin mold encapsulation package where an infrared light emitting diode (LED) is optically coupled with a high gain p-n-p output transistor. The LED transmits the input signals into optical signals, which are then picked by the output transistor. The output transistor is then ignited with an electrical current sourced from the external power supply and drives TTL load.

Benefits

The use of CNY172SD in different application fields brings several advantages:

• High isolation up to 3000 VRMS
• Low input current
• Power dissipation and efficiency optimized
• Repetitivity of optical characteristics
• Fast response to dynamic signals
• External power supply for logic input stage
• Switchable operating voltage selection for input and output stage

Conclusion

Overall, the CNY172SD is the right equipment for a variety of application fields, offering a wide range of features designed by its manufacturer. Through its optocoupler isolation power it provides high voltage protection up 3000 VRMS while managing a low dissipation and optimized efficiency. Its fast response to dynamic signals due its working principle, sets the CNY172SD device in high regard.