42J2K7

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Through Hole Resistors are a type of electrical component used in many aspects of our day-to-day lives. From providing power to our homes to helping regulate the flow of electricity in our mobile devices, these resistors offer a wide variety of practical applications. One particular example is the 42J2K7 resistor which features a unique design and works in a very different manner. Here we will be exploring the application field and working principle of this important resistor.

Design

The 42J2K7 is a through hole resistor, meaning the component must be soldered directly to the PCB board. It is composed of two metal strips or rods welded together at a pre-determined angle. The resistor itself is a 50.22 ohm chip model that has been rated with a 5 watt power rating.

The two metal strips are made from aluminum and are each connected to a small anode contact that is embedded within the center of the resistor. The resistor\'s overall shape resembles that of a horseshoe or \'U\' shape; its design provides more surface area than most standard resistors, and this can be beneficial for heat dissipation.

Applications

The 42J2K7 is primarily used in consumer electronics, such as TVs, DVD players, and other digital devices. It is also used in high-voltage power supplies and automotive components, specifically in ignition systems. The resistor\'s ability to dissipate heat quickly makes it suitable for high-power applications.

In addition to these, the 42J2K7 can also be used in the construction of PC boards. This type of resistor can be used to shorten the trace length between components, thereby reducing PCB interference. For these applications, its 50.22 ohm tolerances make it an ideal choice due to its ability to efficiently manage electrical signals.

Working Principle

As mentioned, the 42J2K7 is composed of two metal strips that are welded together at a predetermined angle. This angle is what determines the resistor\'s resistance value and is usually measured in milliOhms. The two metal strips act as the resistor\'s two conductors; current is passed through the two strips, and the precise angle of the strips determines how much electrical resistance is created.

In addition to the angle, the length and width of the metal strips also play a role in determining the resistor\'s resistance value. As an example, a resistor with two metal strips that are 4mm long and 2mm wide will have a resistance of approx. 18.7 milliOhms.

Aside from the resistance value, the 42J2K7 also boasts an impressive 5 watt power rating. This rating is made possible by the resistor\'s ability to dissipate heat quickly, and it can be attributed to the increased surface area provided by its unique horseshoe-shaped design.

Conclusion

The 42J2K7 resistor is a valuable component that provides many useful applications, and its design ensures efficient heat dissipation under high-power conditions. Its 50.22 ohm tolerance enables it to efficiently manage electrical signals in consumer electronics, high-voltage power supplies, and automotive systems, while its two metal strips offer a resistive value that is determined by their length, width, and angle.

Overall, the 42J2K7 is an important component that can provide superior performance for many of our daily activities and can be used to improve the functioning of our digital devices.

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