CMF55121K00CEEA

Series:	CMF
Packaging:	Tape & Reel (TR)
Part Status:	Active
Resistance:	121 kOhms
Tolerance:	±0.25%
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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CMF55121K00CEEA is a type of through hole resistor, designed for applications in general-purpose circuits. It is capable of withstanding extreme temperatures and humidity, making it suitable for both indoors and outdoors applications. The resistor\'s features include low temperature coefficient of resistance (TCR), fast switching, high voltage, low resistance, and high insulation resistance. The terminations on the CMF55121K00CEEA consist of half-center copper-plated pins, allowing for secure and convenient attachment to a printed circuit board (PCB). The half-center pins are also designed to accommodate a variety of circuit designs. The resistor also features a high degree of thermal stability, with a maximum thermal operating range up to 150⁰ C, making it suitable for higher power applications. The CMF55121K00CEEA utilizes an oxide film as a resistor element, which is encapsulated in heat-resistant epoxy molded over the element. It also features a heat-resistant glass passivation material, protecting the resistor from heat and oxidation. This construction of the resistor also allows for good heat dissipation, which is especially important for applications that require high-temperature resistor requirements. The working principle of the CMF55121K00CEEA is simple yet effective. The resistor is constructed with two copper plates that are frictionally connected. As electric current passes through the plates, a voltage drop across the plates is created. This voltage drop is what causes the resistor’s resistance value. When the resistance of the resistor increases, the voltage drop across the plates increases, resulting in more electric current. As the current passes through the resistor, heat is generated, slowly causing the resistor to heat up and its resistance to eventually decrease. The CMF55121K00CEEA has a wide range of applications, mainly in general purpose circuits, voltage regulation, voltage protection, and precision measurement. It is commonly used as either a variable resistor or a fixed resistor in circuits. As a variable resistor, the resistor\'s resistance can be adjusted to the desired value as the applied current varies. As a fixed resistor, its resistance value remains constant despite changes in current. In summary, theCMF55121K00CEEA is a general-purpose through hole resistor, designed for high-temperature and extreme humidity applications. It features a low temperature coefficient of resistance, as well as fast switching, high voltage, and low resistance. The resistor is made up of two copper plates that generate a voltage drop across them, resulting in the resistor’s resistance value. The resistor\'s wide range of applications mainly include general purpose circuits, voltage regulation, voltage protection, and precision measurement.

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