PC3SD21NTZD

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Optoisolators are electronic components that allow a signal to be transmitted from one electrical circuit to another while keeping them isolated. A particularly attractive type of isolator is the triac/SCR output optoisolator, which can provide galvanic isolation of up to 5,000 volts. The PC3SD21NTZD is a representative of this class.

Features

The PC3SD21NTZD is a surface mounted triac/SCR output optoisolator that offers excellent signal isolation up to 5000 volts. Its features include a low cost, a wide operating temperature range of -40°C to 105°C, and a wide power supply voltage range of 4.5 VDC to 32VDC. Additionally, the device offers a moderately fast signaling speed of 2.5 mA min for 10 ns max. The PC3SD21NTZD is available in an 8-pin DIP package.

Working Principle

The PC3SD21NTZD employs the principle of optical isolation. It consists of an optoelectronic device, known as an optocoupler, which provides optical insulation between two electronic nodes. The optocoupler consists of a light emitter, such as an LED, and a light detector, such as a phototransistor. When an electrical signal is applied to the LED (the input), it causes the LED to emit a light signal, which is detected by the phototransistor (the output). This in turn signals a triac or SCR solid-state switch to turn ON or OFF, which allows the signal to be transmitted from one circuit to another without any direct electrical connection.

Application Field

The PC3SD21NTZD is an ideal choice for applications in which electrical isolation is a must. Its high voltage capability makes it suitable for use in demanding applications such as switchboard and relay control, motor control, lighting, power supply, telecommunications, and datacom and instrumentation systems. Its compact size and low cost also make it well suited for consumer electronics applications.

Conclusion

The PC3SD21NTZD is a triac/SCR output optoisolator that offers 5000 volts of electrical isolation. Its low cost, wide temperature range, and wide input voltage range make it ideal for a range of applications in which electrical isolation is important. Additionally, its fast signaling speed makes it suitable for high-speed applications. This optoisolator is available in an 8-pin DIP package, making it well suited for consumer electronics as well as industrial and commercial applications.

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