CBT25J120K

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Through Hole Resistors

Through hole resistors are widely used in various electrical and electronic components nowadays and are divided into four categories: resistors, capacitors, inductors and transistors. Resistors are one of the most commonly used type of through hole components, which are used to control the flow of electricity by providing a layer of resistance between two points in a circuit. The type of resistor that can be used for a particular application depends on the specific requirements of the circuit, such as tolerance, temperature coefficient of resistance, power, capacitance, inductance, etc. In this article, we will focus on CBT25J120K, a through hole resistor, and its application field and working principle.

Application Field of CBT25J120K

CBT25J120K is a through-hole resistor designed for use in a wide range of electronic components. It is a low-cost and high-precision component suitable for applications such as audio frequency (AF) and radio frequency (RF) amplifiers, DC-DC power converters, switching power supplies and other applications where a resistor with its excellent noise reduction characteristics and high power dissipation helps the circuit to function correctly. The CBT25J120K also finds usage in protection circuits and as current limiters. This through hole resistor offers good DC stability and features a high- temperature coefficient of resistance (TCR) of ± 150 ppm/°C, making it very suitable for temperature-sensitive circuitry.

Working Principle of CBT25J120K

The CBT25J120K is a carbon composition type of resistor with fixed resistance and a rated power dissipation of 1 W. It consists of a high-purity carbon composition substrate that is surrounded by an epoxy resin and outer metal layer. The resistance value is determined by the ratio of the voltage required to be applied to the resistor to the current flowing through it. This resistor is a non-inductive type, meaning that it does not generate any self-inductance. The CBT25J120K also exhibit very little variation in resistance with temperature, making it an ideal choice for temperature-sensitive circuits.

The CBT25J120K is designed to operate in a wide temperature range of -55°C to +125°C, thus making it suitable for all kinds of harsh environmental conditions. Additionally, the CBT25J120K features very low zero-voltage resistance, which ensures lower levels of electrical noise when this resistor is used in a circuit. The resistor also features excellent humidity protection, making it suitable for circuits where moisture is present.

Conclusion

CBT25J120K is a through hole resistor designed to operate in a wide range of environmental conditions. It features an excellent noise reduction characteristics and is suitable for high-power applications due to its 2W rated power dissipation. Additionally, its low-TCR and wide temperature range make it ideal for temperature-sensitive circuits. This resistor is widely used in audio and radio frequency amplifiers, DC-DC power converters, switching power supplies, high-voltage protection circuits, and current limits.

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