MFR1WSFBE52-2R26

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Through Hole Resistors

With every type of electronic component, though hole resistors are no exception, it is essential to understand their application field and working principle. This article will discuss the MFR1WSFBE52-2R26, what it is used for, and how its design leads to its particular form of operation. Doing so will give a more comprehensive understanding of the type and its use.

What Is MFR1WSFBE52-2R26?

MFR1WSFBE52-2R26 stands for Metal Film Resistor (MFR) with an assigned 01 tolerance (1) ramped or wide self-forming element (WSFBE) with a maximum rated resistance of 52 Ohms(52) and a rated power of 2W (2R). More specifically, these are SURFACE MOUNT Resistor (SMR) units with a wide operating temperature range. They feature lead-free solder fillets, reduced gain in high frequency/pulse, and improved performance in low frequency/DC applications.

Applications

MFR1WSFBE52-2R26 are primarily used to set, modify, or limit electrical current in electronic circuits. As such, they are very common in consumer electronics, from computers and smartphones to audio applications. They can also be used as voltage dividers, current-limiting resistors, or as an element of a Wheatstone bridge setup. These through hole resistors have the advantage of being able to sustain higher power applications than similar SMDs.

This type of metal-film resistor is also used in hobby circuits for temperature measurement and control, as well as for regulating the voltage of batteries. They are also suitable to be employed in applications requiring a wide voltage or temperature range, like automotive, mobile, and industrial sensors.

Working Principle

Resistors operate under a straightforward principle. Electrical current is basically a flow of charged particles across a conductor. The resistor\'s design restricts this flow of particles, thus stemming the current and providing the desired form of resistance. In the case of the MFR1WSFBE52-2R26, the resistance is provided by a spiral of resistive metal film deposited on an epoxy substrate or ceramic core. This structure is then covered with a protective lacquer.

When the resistor is subjected to electricity, the temperature of the spiral increases due to its resistance to the current flow. The design of the serpentine pattern is such that the heat generated by the current flow will be distributed evenly to the chip, thanks to the fact that there is more surface area exposed to the air, and with an optimal resistance value. This allows the resistor to remain stable in the intended operation range.

Conclusion

The MFR1WSFBE52-2R26 is a surface mount, metal-film resistor with a wide operating range. It is suitable for a wide variety of applications, particularly those where stability and reliability are paramount, such as automotive, mobile, and industrial sensors as well as applications requiring a wide voltage or temperature range. Its operation is based on a simple principle: it limits the current flow by creating an electrical resistance.

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