Series:	MFR
Packaging:	Tape & Box (TB)
Part Status:	Active
Resistance:	21 kOhms
Tolerance:	±1%
Power (Watts):	2W
Composition:	Metal Film
Features:	--
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: MFR2WSFTF52-21K application field and working principle

Through hole resistors are essential components in nearly all electronic circuits. It limits current, divide voltages, and establish reference voltages. MFR2WSFTF52-21K, being one of the most popular models of through hole resistors, is widely used in many applications ranging from consumer electronics to industrial applications, due to its high reliability, accuracy, and low power consumption.The MFR2WSFTF52-21K is a high-precision through hole resistor with a resistance of 52 ohms, which can reliably maintain its value with a temperature coefficient of 250ppm/K. This resistor has a physical dimension of 0.5x1.3mm and a tolerance level of 0.5%. The working power of the resistor is 0.25W, meaning it can be used to dissipate up to 0.25W of power. It is also very stable, with a low inductance of 10nH and high voltage rating of 200V.The principle of operation of the MFR2WSFTF52-21K is relatively simple. It is based on Ohm\'s law, which states that the current through a conductor between two points is directly proportional to the potential difference or voltage across those two points. In the MFR2WSFTF52-21K, the resistance material acts as the conductor which restricts the flow of electrons through the wire.A resistor works by dissipating the energy it receives from the current flowing through it in the form of heat. The resistor dissipates this energy as thermal energy, which is then lost to the surrounding environment. The energy dissipated by the resistor is proportional to the current passing through it and inversely proportional to the resistance of the resistor material. The MFR2WSFTF52-21K requires a minimum voltage of 1V for it to start functioning, and typically will heat up to a temperature of 85°C when dissipating the power.The MFR2WSFTF52-21K is primarily used in applications such as audio and video systems, communications systems, computer systems, automotive audio systems, signal processing, and power management systems. The main benefit of this resistor is its highly reliable performance and small size, which make it useful for applications where space is a primary concern.The MFR2WSFTF52-21K is a widely used through hole resistor due to its performance and reliability. It has a wide range of applications due to its small size and high power rating, and its low temperature coefficient of resistance ensures that it can maintain its resistance without fluctuating or degrading over time.

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