CBB capacitors use polypropylene film as the dielectric (different CBB capacitors might use different internal dielectrics, but the core material is polypropylene film), with aluminum foil as the electrodes. They employ a non-inductive structure, are wound into shape, and are encapsulated in epoxy resin or plastic housings. These capacitors have high dielectric constants, a wide temperature range, strong overvoltage resistance, good frequency characteristics, self-healing properties, long product life, and stability. They are relatively low-cost and widely used in various applications.
The CBB22 capacitor is the most widely used among CBB capacitors. It is known by many names, such as CBB21 and MPP capacitor, which are essentially the same but differ in naming conventions among manufacturers. The CBB22 capacitor is inexpensive and offers high cost-performance ratio, making it widely used in high-frequency, DC, AC, and pulse high-current applications. For instance, it is commonly used in lighting fixtures, power supplies, and can also be found in resistor-capacitor (RC) step-down circuits.
The MPB capacitor, also known as CBB21B capacitor, is similar to the CBB22 capacitor but differs in its encapsulation. While the CBB22 capacitor is encapsulated in epoxy resin, the MPB capacitor uses a plastic outer shell. MPB capacitors are more resistant to high temperatures and humidity, offering a longer lifespan, but they are slightly more expensive than CBB22 capacitors. Their function is essentially the same as that of CBB22 capacitors.
Although the CBB22 capacitor is cost-effective, it may not perform well in high voltage and high current circuits. In such cases, the CBB81 high voltage resonance capacitor is used. CBB81 capacitors are suitable for high-frequency, DC, AC, and pulse high-current applications, such as in lighting fixtures, power supplies, monitors, and color television circuits.
MMKP82 capacitors are an upgraded version of the CBB81 capacitors. They serve similar functions, but while the CBB81 is encapsulated in epoxy resin, the MMKP82 is encapsulated in a plastic shell. Due to the use of special double-sided metallized polypropylene film, MMKP82 capacitors are smaller in size, more resistant to high temperatures and humidity, and have a longer lifespan, offering the same functions as the CBB81 capacitors.
Used in audio circuits and ultrasonic mask machines.
Suitable for starting and running "single-phase motors" powered by 50/60 Hz AC power.
Usually square in shape, mainly used in electric fans, range hoods, and air conditioner fans as starting capacitors.
Compact in structure and stable in performance, it is the preferred product for many high-power household appliances and industrial equipment.
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