H4442RBDA

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Through Hole Resistors (THR) are a type of passive electronic component consisting of a resistive element inside a cylindrical body commonly known as a can. THR components are used to provide an electrical resistance for a variety of applications, including power supplies, instrumentation, signal conditioning, and semiconductor device circuits. The H4442RBDA is a specific type of THR resistor that can be used in a wide variety of applications. This article will focus on the H4442RBDA application field and working principle.

Application Field

The H4442RBDA is a high-stability resistor that can be used in a variety of applications. It is constructed in a robust metal-encased housing and is available in both through-hole and surface mount packages. This makes it suitable for a range of applications including avionics, industrial, and medical equipment. It can also be used in power supplies, motor controllers, digital signal processors, instrument amplifiers, digital oscilloscopes, and many other applications.

The H4442RBDA is designed to work in both low and medium voltage applications. It has a very low temperature coefficient and an excellent power-handling capacity, making it suitable for both commercial and aerospace applications. Its temperature stability and low tolerance make it ideal for precision applications where maximum accuracy is a must. It is also suitable for DC circuits and filter applications.

Working Principle

The H4442RBDA is a non-inductive, metal-clad resistor. Its internal construction consists of several layers of resistive material sandwiched between two metallic plates. This construction allows the resistor to provide an electrical resistance that is dependent on the total thickness of the resistive material and the number of layers used in the construction. By varying the thickness of the resistive material, or the number of layers, the resistance value of the H4442RBDA can be set to the desired value.

The resistor also has an internal thermal fuse that will trip and cut off the supply current in case the temperature of the resistor exceeds its operating limits. This ensures that the entire circuit will not be damaged in case of overheating. Additionally, the H4442RBDA has built-in fusible resistors that will open the circuit in case of any excessive current. This protects the resistor from permanent damage.

Conclusion

The H4442RBDA is a high-stability, through-hole resistor designed for a variety of applications. Its robust metal-encased housing and its low temperature coefficient along with its excellent power-handling capacity make it suitable for both commercial and aerospace applications. Additionally, its internal thermal fuse and fusible resistors make it safe to use in both low and medium voltage applications. Thus, the H4442RBDA is an ideal choice for any application where precision, accuracy, and safety are required.

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