How to distinguish Conductive polymer solid capacitors?

We often hear that Conductive polymer solid capacitors will be used on the motherboard.

So, what is a Conductive polymer solid capacitors? How to distinguish?

Both Conductive polymer solid capacitors and liquid capacitance (i.e. electrolytic capacitance) belong to polar capacitance. At present, most of the polar capacitors used in desktop motherboards are Conductive polymer solid capacitors.

The biggest difference between them is that they use different dielectric materials (non-conductive materials).

The dielectric material of liquid capacitor is electrolyte, and the liquid capacitor on the main board is usually wrapped with plastic material.

The dielectric material of Conductive polymer solid capacitors is conductive polymer, which is usually wrapped in aluminum shell.

Therefore, it can be distinguished by the naked eye whether the Conductive polymer solid capacitors or liquid capacitor is used on the motherboard.


Conductive polymer solid capacitors advantage

Good stability, high temperature resistance, long service life and wide application.

On the one hand, when the motherboard is used for a long time, the high temperature will expand the electrolyte, resulting in the loss of the function of the liquid capacitor, and even expand and burst due to exceeding the boiling point. This is not the case with Conductive polymer solid capacitors.

On the other hand, when the main board is not powered on for a long time, the liquid capacitor electrolyte is easy to form a chemical reaction with alumina, resulting in bursting when starting or powered on. The Conductive polymer solid capacitors material will not interact with alumina, so this kind of situation will not occur.

Post time: May-07-2022