As an important component of electronic products, aluminum electrolytic capacitor plays an extremely important role in the switching power supply. Its service life and working condition are closely related to the service life of the switching power supply. A large number of production practices and theoretical discussions show that if the electrical capacity of the switching power supply is damaged, especially when the electrolytic capacitor is falling or the electrolyte overflows, the power supply manufacturer doubts the capacitor There is a problem with the quality, and the electrolytic capacitor manufacturer said that the power supply design is improper, which leads to disputes between the two sides. If you know how to calculate the service life of aluminum electrolytic capacitor, this problem will be solved very well.

Generally speaking, if the temperature increases, the life consumption of the capacitor will increase. That is to say, if the working temperature of the capacitor increases by 10 ℃, the life of the capacitor will be doubled. If the working temperature of the capacitor does not decrease by 10 ℃, the life of the capacitor will be doubled. Therefore, the environmental temperature is an important factor affecting the life of the electrolytic capacitor. As we all know, in electronic products, the factors that affect the life of electrolytic capacitors are environment temperature T and ripple current IRMS. The load power borne by capacitors is directly proportional to ripple current. The larger the load is, the greater the ripple current is, the more heat generated when the internal oxide film decomposes, and the more electrolyte consumption is consumed when repairing.