SL10 12101-B

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Inrush current limiters are an integral part of power designs that protect components from damage. In learning about the SL10 12101-B, its application field and working principles must be understood to better appreciate its value.

This particular device is rated for 10A, and is designed to be placed at the input of a power supply for protection against inrush current. It can be used for both AC and DC applications, such as consumer electronics, power instruments, transformers, and more. It uses avalanche breakdown process and a NTC thermistor as its core component to achieve its inrush current protection goals.

The SL10 12101-B works in two stages: pre-turn on and steady state. During the pre-turn on stage, the device works in two directions. First, it offers a large resistor and conducts the current; then, the device drastically reduces the resistor to a small value and virtually stops the current. This process limits the peak value of the current and offers a controlled level of power.

The device’s steady state works a bit differently. When the peak current of the circuit is within the regulation level of the device, it will work at steady state and offer a practically negligible resistance to the electrical current.

By limiting inrush current, the SL10 12101-B does more than protect the power supply and the underlying circuit. By not allowing high peaks of current to flow unchecked, it reduces stress on the power supply and allows for better power management.

Furthermore, by reducing the peak current it takes to start up a power supply, it decreases start-up time along with watts wasted in start-up power. As such, it offers improved efficiency at an affordable cost.

As a safety precaution, this particular device has a built-in thermal switch that is deactivated if the device becomes too hot, in order to protect the circuitry it is safeguarding from further damage. This thermal switch will reset the device when the temperature has lowered to a safe levels.

The SL10 12101-B inrush current limiter offers an excellent balance between cost and performance, with a high level of protection and a wide range of capabilities. With its many features, it can be applied to a variety of AC and DC applications, such as those found in transformers, consumer electronics, etc., in order to offer improved power management and improved efficiency. Furthermore, it has a built-in thermal switch for added safety, making it a perfect fit for today’s power designs.

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