Series:	FMP
Packaging:	Tape & Box (TB)
Part Status:	Active
Resistance:	3.9 Ohms
Tolerance:	±5%
Power (Watts):	3W
Composition:	Metal Film
Features:	Flame Proof, Safety
Temperature Coefficient:	±100ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.177" Dia x 0.453" L (4.50mm x 11.50mm)
Height - Seated (Max):	--
Number of Terminations:	2

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Through Hole Resistors: FMP3WSJT-73-3R9 Application Field and Working Principle

Through hole resistors are an essential component of a circuit, and are the most commonly used type of resistor. FMP3WSJT-73-3R9 is a popular through hole resistor, and is widely used in a range of applications. Here we will take a look at the application field and working principle of the FMP3WSJT-73-3R9.

Application Field of FMP3WSJT-73-3R9

The FMP3WSJT-73-3R9 through hole resistor is a high power, high temperature device, capable of handling a large amount of current. As such, it is widely used in automotive applications, such as fuel injectors, alternators, and Ignition systems. Its high power rating also means it is suitable for power supply design and is often used to filter noise from motor control circuits. It can also be used for precision current-limiting in medical applications.

Working Principle of FMP3WSJT-73-3R9

The FMP3WSJT-73-3R9 works by providing a resistance to electrical current. This is achieved through a combination of two different materials, a ceramic substrate and a metal contact layer. The ceramic substrate is made from an sintered ceramic, while the metal contact layer is made from a Nickel-Chromium alloy. The ceramic substrate provides an electrical resistance by impeding the flow of electrons, while the metal contact layer helps to spread the heat generated by the resistor. This helps to reduce the heat generated by the resistor and ensure that it does not become overheated. When an electrical current passes through the FMP3WSJT-73-3R9, current passes through the ceramic substrate and is resisted by the substrate’s resistance. This resistance reduces the current and thus helps to protect other components in the circuit. The metal contact layer also helps to dissipate heat, which helps to further protect components in the circuit.

Conclusion

In conclusion, the FMP3WSJT-73-3R9 through hole resistor is a popular and widely used device, and is suitable for a range of applications. It works by providing a resistance to electrical current, and its combination of a ceramic substrate and a metal contact layer helps to both reduce the current and dissipate heat.

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