Low Loss CBB21 334J 630V Metallized Polyester Film Capacitor Very Small Inner Temperature Rise​

The naming of CBB capacitors, CBB capacitors, also known as polypropylene film capacitors, or metallized polypropylene film capacitors, referred to as metal film capacitors. Commonly used code names are CBB21 capacitors, CBB22 capacitors, MPR capacitors, MPP capacitors and so on. Everyone has different names for CBB capacitors, but they are all the same in essence. They are all capacitors made of polypropylene film! It is made of metallized polypropylene film as the medium and encapsulated with epoxy resin.

The material and process of CBB capacitors determine that it has the characteristics of small size, large capacity, stable performance, high reliability, and self-healing properties. Therefore, it is widely used in various LED lighting, home appliance control boards, instruments and meters, and is used in circuits such as filtering, resonance, coupling, and resistance-capacitance step-down.

Features and Usage

1) This is constructed from metallized polypropylene film dielectric, non-inductive construction.
2) Epoxy resin coating, radial CP wire.
3) Very small dissipation factor at high-frequency, very small inner temperature rise.
4) Good stability of capacitance, excellent insulation resistance property.
5) excellent self-healing property.
6) suitable for DC, pulse, high-frequency large-current application widely used in display, sound equipment, audio-visual devices, telecommunication equipment, data transmission and process facility and various electronic equipment.

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 reasons why the CBB21 capacitor burns out?

1. Bought low-quality capacitors
Now the cost of CBB21 capacitors produced by different manufacturers is actually very small. If the price of CBB21 capacitors you buy is obviously lower than the market average price, the possibility of buying inferior capacitors is very high. The materials used for this inferior capacitors are very poor. If the production process can be saved, the performance cannot be guaranteed, and the capacitor with too poor quality is definitely easy to burn out.
2. The working environment temperature is too high
Even a CBB21 capacitor with excellent quality is easy to burn out if the working environment temperature is too high. Generally, the temperature resistance of CBB21 capacitors is -40°C~105°C. Although it can withstand 105°C in theory, its working temperature is higher. High, the life of CBB21 capacitors is drastically reduced.
Generally, a qualified CBB21 capacitor burns out, which is basically caused by too high ambient temperature, such as being too close to an electronic component with a large heat generation (such as a MOS tube), or the entire circuit has a large heat dissipation, and the heat cannot be discharged smoothly. etc., are the core reasons for the damage of CBB21 capacitors.
Excessive operating temperature is one of the most common and most likely causes of CBB21 capacitor damage.
3. Improper selection of capacitors
For example, the current is too large, exceeding the working current of the CBB21 capacitor; the voltage in the circuit is too high, exceeding the rated working voltage of the CBB21 capacitor, etc. If the type is not selected properly, the CBB21 capacitor will be easily damaged during operation.