PFRA.300

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC Resettable Fuses are a type of fuse that is able to reset after the overload is cleared. They are typically used in applications where a regular fuse would not be able to reset itself after a short circuit. PTC Resettable Fuses are also known as Polyfuse or Polymeric Positive Temperature Coefficient (PTC) Resettable Fuses. The PFRA.300 is a specific type of PTC Resettable Fuse that is designed specifically for use in electronic devices.

The PFRA.300 is an ultra low resistance thermistor that provides protection against overcurrents from 1 amp to 4 amps. The PFRA.300 has a unique feature that allows it to “self-reset” after a short circuit. When an overload occurs, the PFRA.300 will open its circuit to prevent any further damage and then reset itself after the overload is cleared.

The PFRA.300 is used in a variety of applications such as cell phone batteries, USB chargers, handheld electronics, automotive and industrial applications, and more. It is one of the most widely used thermistors for these types of applications due to its small size, low resistance, and resettable capabilities.

The working principle of the PFRA.300 is based on the PTC thermistor characteristics. The PTC thermistor is a special type of resistor that exhibits an increase in both resistance and self-heating as the current passes through it. When the temperature of the thermistor reaches a certain point, its resistance increases exponentially, limiting the amount of current that’s able to flow through it. This creates a protective layer against overcurrents as the temperature of the thermistor reaches its thermal limit.

The PFRA.300 also uses a voltage-controlled circuit to maintain a low impedance state during normal operation. This allows the fuse to quickly respond to an overloaded situation and open its circuit, preventing further damage to the device. After the overload is cleared, the PFRA.300 will reset itself and return to its normal low impedance state, making it suitable for use in both DC and AC systems.

The unique design of the PFRA.300 makes it ideal for use in a variety of different applications. It provides reliable and effective protection against overloads while allowing a device to continue operating normally. The PFRA.300 is a great choice for many electronic devices, particularly those that require protection against sudden overloads.

The specific data is subject to PDF, and the above content is for reference