H421KBZA

Series:	Holco, Holsworthy
Packaging:	Bulk
Part Status:	Active
Resistance:	21 kOhms
Tolerance:	±0.1%
Power (Watts):	0.5W, 1/2W
Composition:	Metal Film
Features:	Pulse Withstanding
Temperature Coefficient:	±100ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.146" Dia x 0.394" L (3.70mm x 10.00mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Overview

Through Hole Resistors, or THRs, are a type of electrical component that helps control the flow of electricity within a circuit. The design of through hole resistors involves having the entire resistor body pass through a hole in the printed circuit board (PCB). When properly installed, these resistors can provide current to components such as diodes, transistors, and other components in a circuit that may require help getting started. The H421KBZA application field and working principle can help better understand these components and the overall operation of a THR.

H421KBZA Application Field and Working Principle

The H421KBZA is a type of through hole resistor with two contact points. The contact points of this type of resistor are typically made of precious metal and are designed to provide better electrical contact and more reliable performance in harsh environments. This type of resistor has a wide application field, including automotive, industrial, and defense applications. The working principle of this type of resistor is based on Ohm\'s Law, which states that the voltage across a resistor is equal to the current passing through it multiplied by its resistance. Thus, the value of the resistor\'s resistance can be used to control the amount of current flowing through the component. This is done by changing the value of the resistance by adjusting a sliding scale on the resistor itself. H421KBZA resistors typically have a wide tolerance range that helps them to be relatively accurate and stable in a variety of different conditions. Furthermore, these resistors have a very low temperature coefficient, meaning that they are able to maintain their electrical resistance at a relatively consistent level regardless of outside temperature variation.

Benefits of THR Resistors

THR resistors offer many benefits to circuit designers. Firstly, they are typically easier to install when compared to other types of resistors. This is due to the fact that these components have two contact points that can be easily inserted into the PCB itself. Furthermore, THR resistors have a relatively low inductance. This means that they are able to suppress high frequency signals more effectively, thereby helping to reduce EMI and RFI interference. Additionally, THR resistors can handle higher power loads than many other types of resistors. This is beneficial when designing circuits that require higher amounts of current. This is especially true in automotive and industrial applications, where higher power levels are often required.

Conclusion

Overall, H421KBZA resistors are an excellent choice for any circuit design. They have a wide application field, are easy to install, and can handle higher power levels. By understanding the working principle of these components, designers can ensure that they are installing the correct resistor for the job.

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