Q8012RH2

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Thyristors - TRIACs is a family of semiconductor components used for controlling electrical power, and the Q8012RH2 is a type of TRIAC, or a three-terminal AC switch, as it can conduct power in either direction when triggered by a brief current applied externally. It is often used in applications such as motor speed or light dimmer control, heater control, and power control in switch-mode power supplies.

The Q8012RH2 can provide a range of current load capabilities with an on-state resistance of 1.3 ohms, which allows it to be used in a range of loads. The device also has a high ‘Commutating dV/dt’ which ensures excellent electrical noise immunity and good switching characteristics. As it is a self-commutating TRIAC, it can also be used to safely control power in AC systems with no additional external control circuitry.

The Q8012RH2 works by operating in the ‘quadrant’ that is appropriate for the current direction – it is “off” in the first quadrant and the second quadrant and it is “on” in the third and fourth quadrants. This is when a current is applied to the Gate terminal to trigger it. The Gate terminal must be pulsed for each half-cycle in order for the TRIAC to conduct current; it will not automatically switch to the other half-cycle.

The Q8012RH2 also features a thermistor for temperature protection, so that the device can be used in applications with a high enough temperature, without risking failure. It also has built-in electro-static discharge protection that ensures the device can withstand any sudden changes in the current environment.

The Q8012RH2 is used mainly in applications such as motor speed control, light dimming control, heater control, and power control in switch-mode power supplies. In motor speed control it can be used to either increase or decrease the speed. In light dimming control it can be used to reduce the light output in order to save energy. For heater control, it can be used to regulate current in order to maintain a set temperature. And in switch-mode power supplies, it can be used to control the power delivery and switching.

The Q8012RH2 is simple to use and is designed for low power applications, making it a popular choice for designers who need to control or regulate AC power in a safe and reliable manner. It has been tested and proven in applications where it can provide reliable and precise control over power, and is often used for motor speed control and dimming control in home and commercial lighting systems.

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