RE46C109S16TF

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RE46C109S16TF is an optically coupled triac triggering single transistor in a 6-pin plastic package. This is an optically isolated solid-state switch which utilizes an internal GaAs infrared emitter and a high gain silicon NPN phototransistor to offer electrical isolation up to 7500V RMS between the input and the output. The RE46C109S16TF can be used to control AC power from low voltage logic circuits.

Application

The RE46C109S16TF optically isolated solid state switch is mainly used in applications such as temperature controllers, AC motor speed controllers, light dimmers, solid-state interlocks, and overvoltage protection circuits. It is commonly used in various industrial applications where AC power needs to be controlled from low voltage logic. It can be used to switch on/off Triacs, SCRs, thyristors, and other such AC devices. It can be used to control AC motor speed, heater elements, and other AC power loads. It can be used as a phase angle controller to control the brightness of halogen lamps. The device is also used to control domestic appliance such as air-conditioners, refrigerators, etc.

Working Principle

The RE46C109S16TF optically isolated switch works by using an internal GaAs infrared LED and a high gain silicon NPN phototransistor to provide electrical isolation across the input and output. When the LED is switched on, the phototransistor acts as a switch and conducts current, thus connecting the output to the power supply. When the LED is turned off, the phototransistor stops conducting and the output is disconnected from the power supply. The isolation voltage rating of the device is up to 7500V RMS, which makes it an ideal choice for isolating single-ended logic circuits from high voltage AC circuits.

The device is also equipped with a high frequency hysterisis system which allows it to maintain its output state despite short-term, momentary variations in the input signal. This makes the device suitable for applications where frequent on and off switching is required, such as commercial and industrial control systems. The device is also equipped with a thermal shutdown feature which automatically turns the device off in case the internal temperature rises above a certain level.

The RE46C109S16TF optically isolated switch is available in a 6-pin plastic package. The package contains an LED pin and a collector pin which need to be connected to the power supply and the input/output respectively. The other 4 pins are for ground, voltage supply and temperature monitors.

Conclusion

The RE46C109S16TF optically isolated switch is a robust device which can be used to control AC power from low voltage logic circuits. Its wide isolation rating and high switching speed makes it an ideal choice for applications such as temperature controllers, AC motor speed controllers, light dimmers, solid-state interlocks, and overvoltage protection circuits. It is available in a 6-pin plastic package, and the package contains an LED pin and a collector pin which need to be connected to the power supply and the input/output respectively. The device is also equipped with a high frequency hysterisis system and a thermal shutdown feature.

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