MCR100-6RLRA

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Thyristors - SCRs

SCR or silicon-controlled rectifier, is a semiconductor device that is used for the control of high power in applications that use AC voltage. It is a four-layer, three terminal device that is capable of controlling large amount of power. The MCR100-6RLRA is a medium power SCR designed to be used in many applications.

MCR100-6RLRA Application Field

The MCR100-6RLRA is used in a variety of applications that require controlling high power. The MCR100-6RLRA is commonly used in light dimmers, electric heaters, motor drives, welding machines, AC power controllers and power supplies. The MCR100-6RLRA is also ideal for controlling resistive, inductive and lightly loaded capacitor loads.

MCR100-6RLRA Working Principle

The operation of the MCR100-6RLRA is similar to other SCRs. The device operates in a three-terminal configuration, where one terminal (anode) is connected to the main power source and the other (cathode) is connected to the load circuit. The third terminal, called the gate, is used to turn the device on by providing a voltage pulse to the gate. When enough voltage to break down the reverse-biased junction is applied to the gate, the device conducts current which flows from the anode to the cathode.

The anode voltage and current limits are printed on the package. The maximum allowable current is typically limited by the device power dissipation. When the current exceeds the maximum value, the device activates a thermal-protection circuit which causes the device to turn off.

The MCR100-6RLRA’s operating temperature range is -40°C to +85°C. During operation, the device must remain within the specified temperature range. As temperatures increase, the on-state voltage will increase, reducing SCR efficiency.

Conclusion

The MCR100-6RLRA is a medium power SCR designed for use in many applications that require controlling large amount of power. The device operates by providing a voltage pulse to the gate which breaks down the reverse-biased junction. The device comes with anode voltage and current limits that must be observed in order to prevent thermal activation of the device. The operating temperature range of the device is -40°C to +85°C.

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