1812L125PRT

PTC Resettable Fuses

Polymer Positive Temperature Coefficients, or PTC, Resettable Fuses are electrical protective devices used to protect circuits and devices from electrical overloads. The PTC Resettable Fuse, or PRT, is a type of PTC Resettable Fuse that has been around since the late 20th century. PRTs are composed of a conductive polymer, a metal or ceramic substrate, and two or more electrical contacts. PRTs are designed to quickly detect and react to changes in temperature by increasing the electrical resistance of the device.

1812L125PRT Application Field

The 1812L125PRT is a thin and low profile PTC Resettable Fuse designed for use in space constrained environments such as PCBs, boards, and interface devices. 1812L125PRTs are used to provide over-current protection in a wide variety of applications including automotive, medical and industrial applications. In addition to their popular use in consumer electronics, PRTs are also used in the automotive industry, including in fuel systems, traction control systems, and battery management systems. The PRT has also found applications in the medical industry, where they are used in medical imaging, ultrasound, and X-ray machines.

1812L125PRT Working Principle

The working principle of the 1812L125PRT is similar to that of other types of PTC Resettable Fuses. When the device detects an over-current situation, the conductive polymer within the device begins to heat up, increasing its resistance. This rapidly increases the temperature of the device, triggering a temperature-sensitive switch that permanently interrupts the current path. The PRT then cools back to its normal temperature, resetting the device and allowing current to flow again.

The 1812L125PRT is designed to be tolerant of over-current and voltage fluctuations, allowing it to continue to function as normal during normal operation. The device has a high current rating and can provide reliable protection in high-current applications. Additionally, the device is designed to mount easily onto a variety of surfaces, including PCBs, boards, and interface devices.

The 1812L125PRT is an effective and reliable over-current protection device for space constrained environments. Its small size allows it to operate in environments where larger devices cannot, while still providing the same level of protection. The device is resistant to temperature and voltage fluctuations, allowing it to continue to function as normal during normal operation. The device is also easy to mount and can be used in a wide variety of applications.