電解電容器的使用壽命與什么因素有關呢?根據長期的實踐經驗總結出電解電容器的使用壽命與其工作環境的溫度有著直接的關系。
What factors are related to the service life of electrolytic capacitors? According to the long-term practical experience, it is concluded that the service life of capacitor is directly related to the temperature of working environment.
普通的電解電容器在環境溫度為90℃時已經損壞。但是現在有很多種類的電解電容器的工作環境溫度已經很高在環境溫度為90℃,通過電解電容器的交流電流和額定脈沖電流的比為0.5時,壽命仍然為10000h,但是如果溫度上升到95℃時,電解電容器即已經損壞。
The common electrolytic capacitor has been damaged when the ambient temperature is 90 ℃. But now there are many kinds of electrolytic capacitors with high working environment temperature. When the ambient temperature is 90 ℃, the ratio of AC current passing through the electrolytic capacitor to rated pulse current is 0.5, the service life is still 10000h. However, if the temperature rises to 95 ℃, the electrolytic capacitor will be damaged.
在選擇電容器的時候,應該根據具體的環境溫度和其它的參數指標來選定,如果忽略了環境溫度對電容器壽命的影響,那么電源工作的可靠性、穩定性將大大降低,甚至損壞設備和儀器。就一般情況而言,電解電容器工作在環境溫度為80℃時,一般能達到10000h壽命的要求。
When selecting capacitors, the specific environmental temperature and other parameters should be selected. If the influence of environmental temperature on capacitor life is ignored, the reliability and stability of power supply will be greatly reduced, and even the equipment and instruments will be damaged. Generally speaking, the electrolytic capacitor can reach the life requirement of 10000 h when the ambient temperature is 80 ℃.
溫度越高,電容器的壽命越短。所以在選擇電解電容型號的時候一定要注意其所能承受的工作溫度,以及適宜的工作溫度,在適宜的溫度下工作,才能更好的延長電解電容的使用時間。
The higher the temperature, the shorter the life of the capacitor. Therefore, in the selection of electrolytic capacitor model, we must pay attention to the working temperature it can bear, and the appropriate working temperature, and work under the appropriate temperature, in order to better extend the use time of electrolytic capacitor.
電解電容器的壽命還與電容器長時間工作的交流電流與額定脈沖電流,一般是指在85℃的環境溫度下測試值,但是有一些耐高溫的電解電容器是在125℃時測試的數據的比值有關。一般說來,這個比值越大,電解電容器的壽命越短,當流過電解電容器的電流為額定電流的3.8倍時,電解電容器一般都已經損壞。所以,電解電容器有它的安全工作區,對于一般應用,當交流電流與額定脈沖電流的比值在3.0倍以下時,對于壽命的要求已經滿足。
The service life of electrolytic capacitor is also related to the AC current and rated pulse current of capacitor working for a long time, which generally refers to the test value under the ambient temperature of 85 ℃. However, some electrolytic capacitors with high temperature resistance are related to the ratio of test data at 125 ℃. Generally speaking, the higher the ratio, the shorter the life of electrolytic capacitor. When the current flowing through the electrolytic capacitor is 3.8 times of the rated current, the electrolytic capacitor is generally damaged. Therefore, the electrolytic capacitor has its safe working area. For general applications, when the ratio of AC current to rated pulse current is less than 3.0 times, the requirements for service life have been met.
由此可見,電解電容的使用壽命主要取決于工作溫度和交流電流與額定脈沖電流兩個因素,確定好這兩個工作因素之后,再選擇合適的電解電容才能有效的推進后續的工作。
It can be seen that the service life of electrolytic capacitor mainly depends on the working temperature and AC current and rated pulse current. After these two working factors are determined, the appropriate electrolytic capacitor can effectively promote the follow-up work.