Film capacitors are widely used electronic components in electronic devices. They use plastic films such as polyester and polypropylene as dielectrics, with metal foils, metal vapor-deposited layers, and metallized films as electrodes. Tin-plated copper-clad steel wires are used as leads. These components are wound into a cylindrical structure with overlapping ends from both sides, and they come in various types and models, finding extensive applications.
Among them, CBB capacitors and CL capacitors are two common types of film capacitors. Although they both belong to film capacitors, there are differences in the dielectric materials used, performance characteristics, and application scenarios. This article will provide a detailed introduction to CBB capacitors and CL capacitors to help better understand the differences between these two types of capacitors.
CBB capacitors, whose full name is polypropylene capacitors, are a type of film capacitor that uses polypropylene film as the dielectric. The common capacitance ranges from 10pF to 10μF, with typical rated voltages ranging from 63V to 2000V. They have advantages such as small size, large capacitance, high dielectric constant, and good stability. Additionally, they can withstand higher temperatures and voltages.
As a result, they are widely used in circuits that require high performance, such as in instruments, meters, household appliances, both AC and DC circuits, as well as in audio system crossover circuits. Furthermore, CBB capacitors are suitable for applications such as filtering, coupling, bypassing, and interference suppression.
CL capacitors are capacitors that use polyester film as the dielectric, also known as polyester capacitors. CL capacitors have a wide range of capacitance, from 100pF to several hundred μF, and a broad working voltage range, from tens of volts to several kilovolts. The advantages of CL capacitors include small size, large capacitance, good stability, high insulation resistance, and lower cost.
Consequently, they are widely used in circuits that require small size and low cost, such as power supply filtering, coupling, bypassing, and signal processing applications. In addition, CL capacitors are suitable for use in fields like communications, electronic instruments, and household appliances.
CBB capacitors and CL capacitors are two common types of film capacitors, each with its own advantages and application scenarios. When using them, it is essential to choose the appropriate capacitor type based on specific requirements.
Post time: Nov-29-2023