​The dielectric of liquid electrolytic capacitor is liquid electrolyte. The liquid particles are very active at high temperature and produce pressure inside the capacitor. Its boiling point is not very high, so slurry explosion may occur. The solid capacitor adopts polymer dielectric, and the activity of solid particles at high temperature is lower than that of liquid electrolyte, Its boiling point is also as high as 350 degrees Celsius, so it is almost impossible to have the possibility of slurry explosion. Theoretically, it is almost impossible for solid-state capacitors to explode.

Solid state capacitance has better performance in equivalent series impedance than traditional electrolytic capacitance. According to test, it is shown that the equivalent series resistance of solid-state capacitor is very small in high frequency operation, and the conductivity frequency is excellent. It has the characteristics of reducing resistance and lower thermal output, and it is most obvious between 100kHz and 10MHz. However, the traditional electrolytic capacitor is easily affected by the temperature and humidity of the environment, and its high and low temperature stability is slightly poor. Even at 55 ℃ to 105 ℃ below zero, the ESR impedance of solid state capacitance can be as low as 0.004-0.005 ohm, but the electrolytic capacitance will change due to temperature. In terms of capacitance value, the liquid capacitance below 20 ℃ will be lower than the marked capacitance value. The lower the temperature is, the lower the capacitance value will be. At minus 20 ℃, the capacitance will drop by about 13%, and at minus 55 ℃, the electric capacity will reach 37%. Of course, this has no effect on ordinary users, but for players who use liquid nitrogen as the ultimate frequency overrun, solid state capacitance can ensure that the capacitance capacity will not be affected due to temperature reduction, which will result in a great discount on the stability of the over frequency, because the capacitance value of solid-state capacitance will only decrease by less than 5% at 55 degrees below zero. Solid state capacitors do have many advantages, but they are not always applicable.

The low frequency response of solid state capacitance is not as good as electrolytic capacitor. If it is used in the part involving sound effect, the best sound quality effect will not be obtained. That is to say, a motherboard with all solid state capacitance is not necessarily the most reasonable! Whether it is solid-state capacitor or electrolytic capacitor, their main function is to filter out clutter, so as long as the capacity of the capacitor reaches a certain value requirements, as long as its component quality is qualified, it can also ensure the stable operation of the motherboard. And this, the electrolytic capacitor can also be achieved.

When the solid state capacitance is 105 ℃, its life is 2000 hours as the electrolytic capacitor. After the temperature is reduced, their life will increase, but the life of solid-state capacitance will increase by a greater extent. Generally, the working temperature of the capacitance is 70 ℃ or lower. At this time, the life of solid capacitance may reach 23 years, almost 6 times of the electrolytic capacitance! But... Will your motherboard continue to work in 23 years? And this 23 years means 24 hours of power on all day. Even if the capacitance has such a long life, other components may not last 23 years.

Compared with electrolytic capacitance, the capacity of electrolytic capacitance is much larger than that of solid-state capacitor at the same volume and voltage. At present, most of the CPU power supply of computer main board adopts solid-state capacitance. Although the problem of slurry explosion is avoided, due to the volume limitation, the capacity redundancy is very small; Moreover, due to the capacity problem, we have to increase the switching frequency of the CPU power supply part. Solid state capacitor and electrolytic capacitor will have capacity attenuation problem in the process of use, and the circuit board using solid state capacitor, the capacity of a little fluctuation, will make the power ripple, resulting in the CPU can not work normally. Therefore, in theory, the life of solid-state capacitor is very high, but the life of the board using solid-state capacitor is not necessarily high.

Maintenance of computer board with solid state capacitance: because the power supply part of CPU is often parallel connected with multiple capacitors, because the solid-state capacitance will not appear deformation, slurry explosion, liquid leakage, etc., visual inspection is basically unable to judge which one is in failure, so it is often used to remove one (whether good or bad) in maintenance and replace it with a large capacity capacitor (electrolytic capacitance can be used in many cases), This approach can generally solve problems quickly.

At present, many manufacturers have introduced the main board with over frequency as the selling point, which mostly uses solid-state capacitance, "the main board of solid-state capacitance can be more super" can only be said to be barely correct, and it is not capacitance that determines the over frequency. The design of the circuit, the development of BIOS, the quality of the CPU itself and the measures of heat dissipation may determine the success or failure of the over frequency. Therefore, it is not said that "replacing the ordinary electrolytic capacitance on the main board with the full solid state capacitor can improve the over frequency performance of the main board". This is a complete mistake. If it is really to say the influence of solid-state capacitance on the over frequency, it is because it has higher voltage resistance and temperature resistance, so it provides a certain guarantee for the stability of the system after the over frequency.