MF-RHT050-AP

PTC Resettable Fuses are an active protective device with an ability to restart the circuit after a failure, such as an overload or a short-circuit, and are advantageous over traditional fuses. This is done by a property known as self-healing, which is a feature of PTCs. In most cases, after such a failure the device will reset itself and turn the circuit on without the need for any instruction from the user.

One of the important applications of PTC resettable fuses is providing overcurrent protection and short-circuit protection in portable electronic devices. One example is the MF-RHT050-AP resettable fuse which has a 0.5A hold current and a 10A fault current. This resettable fuse is designed for overcurrent protection in vehicles, specifically for use in airbag SRS applications. It is a small, compact, and low-profile device that offers maximum flexibility.

Working Principle

The working principle of the MF-RHT050-AP resettable fuse relies on a resistance element that increases in resistance when current passes through it. When current passes through this element it generates heat and this heat causes the resistance to increase, effectively opening the circuit. Once the current has decreased, the element will reset itself. The MF-RHT050-AP resettable fuse has an activation time of 2 minutes and a reset time of 1000ms.

The MF-RHT050-AP resettable fuse is designed to respond to overcurrents and, upon detection, will open the circuit in order to protect the device under its protection. In the event of an overcurrent, the resettable fuse has an automatic resetting feature which allows it to reset itself without external help. This self-resetting feature is especially useful in portable electronic devices such as laptops, tablets, and smartphones, where user intervention is not always possible.

Benefits of Using PTC Resettable Fuses

The use of PTC resettable fuses can bring several advantages to any device or circuit. These advantages include:

• They are small, low-profile devices that offer maximum flexibility.
• They provide overcurrent protection and short-circuit protection for electronic devices.
• They are able to reset themselves without user intervention.
• They are designed to respond to overcurrents quickly.
• They are safe and reliable.

The use of PTC resettable fuses can be beneficial for many different types of applications, including airbag SRS in vehicles. The MF-RHT050-AP resettable fuse is a great example of a PTC resettable fuse and it offers excellent protection and flexibility for portable electronic devices.