RUE250U-2

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PTC (Positive Temperature Coefficient) Resettable Fuses are thermal devices with a positive temperature coefficient. These devices enable reliable protection of sensitive electronic equipment from overload and short-circuit current without triggering circuit breakers or fuses that require replacing. The RUE250U-2 is a PTC resettable fuse device that is used to protect sensitive electronic equipment from overload and short-circuit current.

The RUE250U-2 has a rated current of 0.250 A and is designed to be used in applications requiring protection against secondary currents due to short circuit faults. This device is particularly well suited for applications in which frequent resets and circuit breakers are not desirable, such as telecommunication equipment and consumer appliances.

The working principle of the RUE250U-2 is based on the fact that it contains a specifically formulated positive temperature coefficient (PTC) material which exhibits a negative resistance characteristic. This PTC material has a positive temperature coefficient, meaning that as the temperature increases, the resistance of the material increases. At room temperature, the resistance is significantly lower than at higher temperatures, allowing current to flow through the device. When an overload or short-circuit occurs, the temperature of the device rapidly increases, resulting in an increase in resistance and consequently a decrease in the current flow through the device.

The device is designed to automatically reset after the over-current or short-circuit event has passed, and the temperature of the device has gone back to normal levels. This resetting process helps protect equipment from further damage due to sustained over-current loads and thermal runaway effects.

The RUE250U-2 is a surface mounted device with a compact form factor that makes it suitable for use in a wide variety of PCB designs and electronic applications. It has a strong glass epoxy casing with plated end caps and robust molded lead wires, making it resistant to environmental contamination. The device is also RoHS compliant, ensuring compliance with the latest environmental regulations.

The RUE250U-2 is used to provide reliable protection from over-current and short-circuit conditions in a wide range of applications. The device is ideal for applications in which frequent resets and circuit breakers are not desirable, such as in telecommunication equipment and consumer appliances. With its robust construction and RoHS compliant manufacturing process, the RUE250U-2 is a reliable and cost-effective solution for providing protection from damaging over-current and short-circuit events.

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