Non-Inductive Structure CBB21 225J 400V Metallized Polyester Film Capacitor Flame Retardant Epoxy Powder Coating

What are the characteristics and functions of CBB21 metal film capacitors?

1. High-frequency resistance, and high-frequency loss is very small, much smaller than CL metallized polyester film capacitors, high reliability, good stability, and long life.
2. The internal temperature rise is small, the high temperature resistance is 105°C, and the high temperature resistance performance is good. (It should be noted that there are many CBB21 capacitors on the market that cut corners. They use poor materials and can only withstand high temperatures of 85°C)
3. High insulation resistance, it has good self-healing properties, of course, this is also a common feature of most film capacitors.
4. The exterior is encapsulated with epoxy resin. If you want to use it in some harsh environments, you can also choose MPB capacitors. Its internal core is the same as that of CBB21 capacitors, but the exterior is sealed with a plastic shell.

Usage:

Suitable for DC and lowpulse occasions, forthe amplifier, TV, communications, power supply, LED drivers and other requirements of the small size of the circuit.

Specification:

Outline Drawing:

FAQ

Q;Materials of products?
A;A metallized film for A + grade capacitors. Besides we accept customization
Q;Samples are free?
A:yes!
Q;Quality Control?
A;Quality is first,We has passed ISO9001and ROHS REACH certification,As an important part of quality management, quality control is the key to proving the effectiveness of quality certification.

What are the advantages of CBB21 as a filter capacitor?

Whether the filter capacitor should be CBB21 capacitor or electrolytic capacitor, it is easy to choose. Electrolytic capacitor must be used to filter DC wave, but electrolytic capacitor must be used to filter AC wave, even if it is cheap, you need to use CBB21 at this time capacitance.
The filtering principle of the CBB21 capacitor is actually not complicated. The filtering is the process of charging and discharging. The function of the filter capacitor is simply to make the filtered output voltage a stable DC voltage. Its working principle is that the capacitor is charged when the rectified voltage is higher than the capacitor voltage, and the capacitor is discharged when the rectified voltage is lower than the capacitor voltage. During the charging and discharging process , so that the output voltage is basically stable.
Many capacitors and inductors have the function of filtering, because they have energy storage functions, and filtering is realized by using their functions. The filter circuit requires the energy storage capacitor to have a large capacitance. Therefore, most filter circuits use electrolytic capacitors. However, in the AC circuit, CBB21 must be used as the filter capacitor, even if the cost of the electrolytic capacitor is lower, it cannot be used.
Capacitors with different capacities have different filtering effects. Generally, capacitors of about 10PF are used to filter out high-frequency interference signals, and capacitors of about 0.1UF are used to filter out low-frequency ripple interference. When selecting the capacity of the filter capacitor, generally a large capacitor filters low-frequency waves, and a small capacitor filters high-frequency waves. Only by choosing the most appropriate capacitance value can the best filtering effect be achieved.