SMD100F/33-2 Circuit Protection

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 thermal fuse that can withstand higher current levels than normal fuses while still providing over-current protection. They can be used to protect against electrical surges and short circuits while still allowing normal operation of electrical devices. The SMD100F/33-2 is an example of a PTC Resettable Fuse, and in this article, we will discuss its application field and working principle.

First of all, the SMD100F/33-2 is used mainly in the automotive electronics industry, as it is designed specifically for vehicle applications. It was designed to help protect automotive wiring against electrical faults and surges that occur on the vehicle’s electrical system, as well as providing short-circuit protection. Furthermore, the SMD100F/33-2 can be used in other applications such as telecommunications, consumer electronics, industrial equipment, and other applications that require over-current protection.

The working principle of the SMD100F/33-2 is similar to other PTC Resettable Fuses. The fuse is composed of a special plastic laminate which contains a positive temperature coefficient (PTC) device. When the current flowing through the PTC device exceeds its rated limit, the device temperatures increase, causing the resistance of the fuse to increase dramatically as well. As the current is reduced, the temperature decreases and the resistance decreases to normal levels as well.

The SMD100F/33-2 is designed with a flat temperature range, which is between 0 degrees C (32 F) and 70 degrees C (158 F). This allows for uniform thermal protection over the entire temperature range. The fuse is rated for up to 33 volts and can handle currents up to 5 A. It has a response time of less than 10 milliseconds, meaning that it can react quickly to over-current situations and provide short-circuit protection. Furthermore, the fuse has a low-resettable energy rating of 4.3 mJ, which means that it will reset quickly and have minimal impact on the system after a fault occurs.

In conclusion, the SMD100F/33-2 PTC Resettable Fuse is a thermal fuse designed mainly for vehicle applications, though it can be used in other applications as well. It has a flat temperature range that enables it to provide uniform thermal protection over the operating temperature range. Furthermore, the fuse has a low-resettable energy rating of 4.3 mJ and a response time of less than 10 milliseconds, which allows for quick reaction in over-current situations and protection against short-circuits.

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