Series:	MFR
Packaging:	Bulk
Part Status:	Active
Resistance:	2 kOhms
Tolerance:	±1%
Power (Watts):	0.25W, 1/4W
Composition:	Metal Film
Features:	--
Temperature Coefficient:	±50ppm/°C
Operating Temperature:	-55°C ~ 155°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.075" Dia x 0.134" L (1.90mm x 3.40mm)
Height - Seated (Max):	--
Number of Terminations:	2

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Through Hole Resistors

Through hole resistors provide one of the most basic components of an electronic system, regulating the levels of current conducted between two points within a circuit. Though most commonly cylindrically shaped, through hole resistors come in a variety of representations in terms of their physical features. The most noteworthy among these features is the type of resistor, which either can be a fixed or variable resistor. Included in the category of fixed resistors is the MFR25SFBE52-2K.

What is the MFR25SFBE52-2K?

The MFR25SFBE52-2K, referred to as a metal film resistor, is characteristically a small resistor with a cylindrical body, ±2% tolerance, and 25 W rating. The physical body of the device is usually composed of an alloy of metal, such as copper or silver, and other materials to reduce its specific electrical resistance. The device is primarily designed for incorporation into high-frequency circuits, such as digital and analog audio applications. As a fixed resistor, it has a resistance which does not change once is it fixed into the electrical circuit.

What is the Application Field?

The fixed value of the MFR25SFBE52-2K’s resistance makes it appropriate for high-impedance circuits, like power audio amplifiers, where precision is paramount. It also finds application in low-wattage, non-signal circuits, like those found in power supplies. Despite its low resistance rating, it can be used for low-power applications, depending on the layout of the circuit. In order or deriving maximum benefits from its low resistance, the device should be positioned close to components in need of its regulated current.

What is the Working Principle?

Like many other resistors, the MFR25SFBE52-2K has an internal core, which is exposed on the outside to a metal-oxide coating. Depending on the internal core type of the resistor, its resistance will vary. However, once set, the MFR25SFBE52-2K\'s resistance does not change with time. This is due to the fixed components of the core, such as the metal-oxide coating, which ensures that the device is completely insulated from the dissipated current. With the metal-oxide coating in place, any increase in the current will not affect the internal structure of the resistor and therefore not result in a change in resistance.

Conclusion

Given its strong, metal-oxide coated body and low resistance value, the MFR25SFBE52-2K is best suited for use in high-frequency circuits, such as audio applications. Thanks to its fixed value, it can be used to regulate the levels of current for precision-critical circuits. As it has a wide range of low ratios, the MFR25SFBE52-2K can also be used as a passive component on power supplies and low-power applications. With this in mind, the MFR25SFBE52-2K is a suitable choice for a range of applications where regulated current is needed.

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Part Number	Manufacturer	Price	Quantity	Description