CMF55221K00BEEB

Series:	CMF
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance:	221 kOhms
Tolerance:	±0.1%
Power (Watts):	0.5W, 1/2W
Composition:	Metal Film
Features:	Flame Retardant Coating, Moisture Resistant, Safety
Temperature Coefficient:	±25ppm/°C
Operating Temperature:	-55°C ~ 175°C
Package / Case:	Axial
Supplier Device Package:	Axial
Size / Dimension:	0.090" Dia x 0.240" L (2.29mm x 6.10mm)
Height - Seated (Max):	--
Number of Terminations:	2
Failure Rate:	--

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Introduction to Through Hole Resistors

Resistors are one of the most important and widely used electronic components, that can be found in almost any circuits. Through hole resistors are popularly used and most commonly incorporated into circuit boards. The letters ‘TH’ or ‘THT’, stand for ‘through-hole’. Through hole resistors are composed of a ceramic or epoxy body material, metallic endcaps, and a resistance element. The metal endcaps wrap around the body and are then soldered into a printed circuit board.

Background of CMF55221K00BEEB Through Hole Resistor

The most common type of through hole resistors are ‘fixed’ resistors. The CMF55221K00BEEB is a through-hole resistor from Vishay, which has a high power rating of 0.5W and a tolerance rating of 1%. It has a power derating factor of 1.0mW/°C, and this resistor can withstand a voltage rating of 200V. Metal end caps are fitted between the leads, with the resistive element in the center. The size of this through-hole resistor is 2.2mm × 2.5mm, which is slightly larger than other resistors due to its power rating.

CMF55221K00BEEB Application Fields and Working Principle

The CMF55221K00BEEB through-hole resistor is typically used for a variety of applications including high-voltage power supplies, motor drive control, as well as automotive and industrial applications. It functions to decrease current flow and to provide electrical resistance for circuit protection. The higher the resistance of the resistor, the more current is decreased through the circuit.A voltage is applied across the resistor, which then forces electrons to flow through it. The metallic endcaps provide an electrical contact at both ends, allowing the current to pass through the resistive element. The resistive element is composed of carbon and other materials, depending on the type of resistor. These materials oppose the flow of electrons, thus producing a voltage drop across the resistor and yielding its resistive characteristics. As the current flows through this resistor, power is dissipated in the form of heat energy, which causes the temperature of the resistor to rise.To dissipate this heat energy, metal tabs at both ends of the resistor are soldered onto the printed circuit board. These tabs act as a heat sink, rapidly pulling heat away from the resistor and dissipating it as thermal energy. This allows the resistor to remain cool and prevents the resistor from burning out due to overheating.

Benefits of Through Hole Resistors

Through hole resistors are one of the easiest components to assemble onto a circuit board. They offer better electrical and mechanical stability compared to surface mount resistors, as the metal caps provide additional support that helps keep the resistor in place and protects the resistive element from damage. Through hole resistors also have a higher heat dissipation rating compared to surface mount resistors, as the metal tabs allow for better heat transfer. They are also more stable, and can be used in high-power applications. Additionally, they are easier to maintain, as they can be easily removed by simply unsoldering them from the circuit board.

Conclusion

Through hole resistors are simple, reliable and widely used electronic components. Additional benefits include their ability to be used in high-power applications and their superior heat dissipation rating. The CMF55221K00BEEB through-hole resistor from Vishay is a popular choice for a variety of applications requiring resistance, and its high power rating make it an ideal choice for high voltage and motor drive control projects. It is easy to assemble, features long-term electrical and mechanical stability, and is easy to maintain.

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