What is the difference between a solid capacitor and a liquid capacitor?

A lot of people will see in the motherboard parameters about the capacitance, which is the main board of solid-state capacitor price is usually higher, the solid-state capacitor and the liquid capacitor what is the difference?

Solid capacitors are all known as solid aluminum electrolytic capacitors. It differs from ordinary capacitance (that is, liquid aluminum electrolytic capacitors) The biggest difference is the use of different dielectric materials, liquid aluminum capacitor dielectric materials for the electrolyte, solid capacitors and where is good? For friends who often go to internet cafes or use computers for a long time, there must have been or heard of the motherboard capacitance caused by computer instability, Even the motherboard capacitor burst thing! That's because on the one hand motherboard in the long-term use, overheating causes the electrolyte to heat expands, causes the capacitance loses the function even because exceeds the boiling point causes the expansion to burst! On the other hand, if the motherboard is not energized for a long time, the electrolyte can easily form a chemical reaction with alumina, Causes an explosion when the power is on or on. However, if the use of solid capacitors, there is no such a hidden danger and dangerous!

Because the solid capacitor uses the conductive polymer product as the dielectric material, the material does not have the effect with the alumina, does not have the electricity after the explosion phenomenon, at the same time it is the solid product, naturally also does not exist because of the heating expansion causes the burst. Solid capacitors with environmental protection, low impedance, high and low temperature stability, high grain ripple and high reliability and other superior characteristics, is currently the highest level of electrolytic capacitor products. Because the solid capacitance characteristic is far superior to the liquid aluminum capacitance, the solid capacitor temperature reaches 260 degrees Celsius, and the conductivity, the frequency characteristic and the life is good, is suitable for the low voltage, the high current application, mainly applies in the digital product such as the thin type DVD, the projector and the industrial computer and so on. However, there are more and more solid capacitors, even all-solid-state, and no longer use electrolytic capacitors on the PC motherboard, which makes the solid-state capacitor "civilian" popular, not just for demanding electronic instruments and industrial computers. The dielectric material of the capacitance is a conductive polymer.

What makes the difference is the cost of both. For our use, there is no doubt that solid capacitors have a longer service life. At 105 degrees Celsius, it and the electrolytic capacitor life is also 2000 hours, after the temperature decreases, their life will increase, but the solid capacitor life increase is greater, in general, the operating temperature of the capacitor is 70 degrees or less, this time the solid-state capacitor life may reach 23, Almost 6 times times more electrolytic capacitors! We can see that solid capacitors are high quality, but even if the life of other components is not considered, is it possible to use a motherboard for 23 years? In fact, with the current development speed, a motherboard normal use 4-5 years can be retired, so, Liquid electrolytic capacitors can also meet our needs, do not have to blindly pursue solid-state capacitors.

　　What about the difference between a solid capacitor and a liquid capacitor?

1. There is a very simple way to differentiate between solid capacitance and liquid capacitance, which is to see if there are indentation grooves on the top of the capacitor, such as "K" or "ten" and "T". If there is a liquid electrolytic capacitor, if not it is a solid capacitor.

2, the solid-state capacitor is the use of different dielectric, it is the use of polymer materials rather than electrolytes, it is easy to distinguish from the appearance. In general, electrolytic capacitors are wrapped in plastic bags, while solid capacitors are wrapped in aluminum shells, and there are, of course, some individual examples. For example, the famous Sanyo Oscon solid capacitors are made of purple plastic foreskin. At present, some low-end motherboards and video cards appear on the aluminum shell capacitors are also used electrolyte, but they are wrapped in aluminum shell, people mistakenly think it is a solid capacitor, here we need to see if there is a similar cross or K-word explosion-proof lines. The explosion-proof pattern is not a solid capacitor. However, there are still a small part of the brand's solid-state capacitors for safety reasons, the use of explosion-proof lines, the advantage is to prolong the life of the capacitor. The more common is the yellow Fujitsu R5 class solid capacitors, the domestic Onda board preferred to use this capacitor. Determine whether it is solid-state capacitance, the key is to see the dielectric. Of course, the shape is still able to identify most of the capacitive media. If it is not stable, you can refer to its motherboard parameters.