Difference between CL21 capacitor and CBB capacitor

There are many types of capacitors, such as safety capacitors, ceramic capacitors, and film capacitors.

Polyester film capacitors are also called CL capacitors, and polypropylene film capacitors are also called CBB capacitors. Both have self-healing and non-inductive properties. The main differences between the two are as follows:

1. Under high frequency conditions, the stability of CBB capacitors is higher than that of CL capacitors.

2. Under the same temperature change condition, the range of CBB capacitor capacity change with temperature is smaller than that of CL capacitor.

3. The loss of the CBB capacitor is smaller than that of the CL capacitor. At a frequency of 1kHz, the loss tangent of the CBB capacitor is generally less than 0.001, while the loss tangent of the CL capacitor is less than 0.01.

4. The insulation performance of CBB capacitors and CL capacitors is particularly good, which is better than some other capacitors, but the insulation performance of CBB capacitors is better than CL capacitors.

5. Compared with CBB capacitors, CL capacitors have the advantage of small size. At the same voltage and the same capacity, CL capacitors can be made smaller than CBB capacitors. This is still very practical for those who require volume installation.

Because CBB capacitors have better performance and more expensive units, there are many unscrupulous merchants who use CL capacitors to impersonate CBB capacitors. Therefore, the recommended method is to identify two types of capacitors: if the loss is less than 0.001, it is a CBB capacitor. Otherwise, it is a CL capacitor.