0805L075WR

PTC Resettable Fuses are a safety device that is used in many electrical applications. They are designed to protect both the circuit and the user from electrical overloading. When an excessive amount of current is detected, the PTC will open the circuit, stopping the flow of electricity and preventing any harm to the user or surrounding components. 0805L075WR is a particular type of PTC resettable fuse.

The 0805L075WR is a surface mount, resettable fuse. It has a wide range of application fields, which includes computers, consumer electronics, industrial control, automotive, and battery charging. The 0805L075WR is able to handle currents from 100mA to 1A with a rated voltage of 125V. It is composed of a heat-sensitive polymeric material surrounded by a conductive ceramic shell, and leads that allow it to be soldered to a printed circuit board. The PTC has a unique ability of being able to sense over-currents, and to reset itself once the fault or overload condition in the circuit is corrected.

When current flows through the circuit, a sensor in the PTC measures the current draw. At a specified level of current, the sensor triggers a timer and a spring-loaded snap-action element. This snap-action element shatters the ceramic shell and the ceramic and polymeric material expand, creating an open circuit. This cuts the current flow and prevents further damage. The 0805L075WR is able to reset itself as soon as the current draw drops back below the set threshold. When the snap action element has reset itself, the reactive ceramics and polymeric materials contract and the circuit is closed again.

The 0805L075WR Resettable Fuse has a range of features which make it a useful safety device for many electrical applications. It has a low resistance in comparison to other fuses, it can upper a broad range of overcurrents, and is particularly suitable for automotive and consumer electronics applications. It is a reliable and cost effective solution for protection against over-currents and short circuits.