Series:	ROX, Neohm
Packaging:	Tape & Box (TB)
Part Status:	Active
Resistance:	4.7 Ohms
Tolerance:	±5%
Power (Watts):	3W
Composition:	Metal Oxide Film
Features:	Flame Proof, Pulse Withstanding, Safety
Temperature Coefficient:	±350ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.217" Dia x 0.630" L (5.50mm x 16.00mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Through Hole Resistors: ROX3SJ4R7 Application Field and Working Principle

Through-hole resistors are basic electronic components used in a variety of applications, from simple voltage and current limiting to motor control, power conversion, and signal conditioning. The ROX3SJ4R7 is a type of through-hole resistor that is designed for a variety of applications. In this article, we will discuss the application field and working principle of this resistor.

Application Field of ROX3SJ4R7

The ROX3SJ4R7 is a three-terminal, surface-mount resistor with T-resistor shape. It has a power rating of 3W, and comprises high-dissipation metal-film elements with ceramic substrate construction. This makes it an ideal choice for applications that require high power dissipation and high-reliability operation. It is also suitable for high current pulsed current applications such as circuit protection, driver, and controller circuits.This resistor is also well-suited for audio equipment, power supplies, motor control, data communication, and automotive applications. It is available in standard EIAJ and military grade MS, SCA, and AEC-Q101 sizes and can also be customized to meet application-specific requirements.

Working Principle of ROX3SJ4R7

The ROX3SJ4R7 resistor is a three-terminal surface-mount resistor with a T-resistor shape, which means that it is a resistor that contains two resistive elements, one of which is in series with the other. This allows for higher power dissipation.The ROX3SJ4R7 resistor consists of two metal-film elements and a ceramic substrate. The metal film consists of an oxide layer deposited on the ceramic substrate, which is heated to form a conductive surface. The resistance of the oxide layer is determined by the amount of current that flows through it, which is in turn controlled by the voltage applied to the resistor.The metal-film elements and ceramic substrate construction of the ROX3SJ4R7 help to minimize temperature coefficient of resistance and self-heating, ensuring reliable operation in a wide range of temperatures. This makes the ROX3SJ4R7 an ideal choice for applications that require high power dissipation and high-reliability operation.

Conclusion

The ROX3SJ4R7 through-hole resistor offers high power dissipation, high-reliability operation, and temperature coefficient of resistance and self-heating characteristics that make it an ideal choice for a variety of applications. This includes power supplies, motor control, audio equipment, and automotive applications. Its working principle is based on metal-film resistors with ceramic substrate construction, allowing for higher power dissipation and reliable operation in a wide range of temperatures.

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