开关电源是现时信息家电装具的显要电源，而电解电容是开关电源中一次和二次回路滤波电路中最重要的器件。开关电源频频的小型化、轻量化和跌进，在电子设备中使用量愈来愈大，普及率越加高。对应的就要求电解电容器袖珍大容量化，耐纹波电流，翻来覆去低反抗化，高温度长人寿化和更恰切高密度组建。

　　Switching power supply is an important power supply for information appliances, and electrolytic capacitor is the most important device in primary and secondary circuit filter circuit of switching power supply. The frequency of switching power supply miniaturization, lightweight and falling, in electronic equipment is more and more used, the popularity rate is higher and higher. Corresponding to the requirements of electrolytic capacitor pocket, large capacity, ripple current resistance, low resistance, high temperature long life and more appropriate high density.

　　鉴于电解容电器多数使用卷绕结构，很容易扩展体积，因故单位体积电容量好生大，比另一个电容大几倍到几十倍。可是大电容量的获得是以体积的壮大为代价的，现代开关电源务求越是高的效率，越加小的体积，因此，有必要寻求新的解决办法，来取得大电容量、小体积的电容器。

　　In view of the fact that most electrolytic capacitors use winding structure, it is easy to expand the volume. Because of this, the electric capacity per unit volume is large, which is several to dozens times larger than that of another capacitor. However, the acquisition of large capacitance is at the cost of volume expansion. The higher the efficiency of modern switching power supply is, the smaller the volume is. Therefore, it is necessary to seek new solutions to obtain large capacity and small volume capacitors.

　　在开关电源计划性过程中，不可避免地要挑选适用的电容。就100μF之上的中、大容量出品来说，归因于铝电解电容的价格便宜，为此，至此应用的无上广泛。铝电解电容的寿命往往会化为全总装具的薄弱环节。

　　In the planning process of switching power supply, it is inevitable to select the suitable capacitor. For the medium and large capacity products above 100 μ F, due to the low price of aluminum electrolytic capacitor, so far, it has been widely used. The life of aluminum electrolytic capacitor often becomes the weak link of total assembly.

　　电解容电器的寿命与容电器长久工作的环境温度有直接提到，温度越高，电容器的寿数越短。普通的电解电容器在环境温度为90℃时现已毁掉。但是现今有不少档级的电解容电器的办事环境温度久已很高在环境温度为90℃，经过电解电容器的交流电流和额定脉冲电流的比为0.5时，人寿援例为10000h，不过倘使温度升腾到95℃时，电解电容器即早就毁掉。

　　The life of electrolytic capacitor is directly related to the ambient temperature of capacitor working for a long time. The higher the temperature is, the shorter the life of capacitor is. The common electrolytic capacitor has been destroyed when the ambient temperature is 90 ℃. However, the working environment temperature of many electrolytic capacitors has been very high for a long time. When the ambient temperature is 90 ℃, the ratio of AC current to rated pulse current of electrolytic capacitor is 0.5, the life assistance is 10000 hours. However, if the temperature rises to 95 ℃, the electrolytic capacitor will be destroyed.

　　一方面，电解容电器的寿数还与容电器长时间干活的交流电流与额定脉冲电流（相似是指在85℃的环境温度下测试值，然则有片段耐高温的电解容电器是在125℃时测试的额数）的比值至于。

　　On the one hand, the service life of the electrolytic capacitor is also the ratio of the AC current and the rated pulse current of the capacitor working for a long time (similar to the test value at 85 ℃, but the electrolytic capacitor with high temperature resistance is tested at 125 ℃).

　　开关电源为了跌进而增高了工作频率的屡次化，特为是袖珍高输出开关电源中输入滤波用容电器渴求高纹波性，输出端低反抗化。要使输出滤波用电容器在再三下低抗御化，必须减退同等串联电阻。

　　Switching power supply increases the frequency of operation in order to fall in, especially the capacitor for input filter in pocket high output switching power supply is eager for high ripple and low resistance at the output end. In order to make the output filter capacitor with low resistance again and again, the same series resistance must be reduced.

　　纹波电流对铝电解电容器的影响非同儿戏是在ESR上发生功耗使铝电解容电器发热，跟脚浓缩使用寿命。一般说来，反激式变换器时有发生的电钮演替电流相对最大。

　　The effect of ripple current on aluminum electrolytic capacitor is not a trifling matter. The power consumption on ESR causes the aluminum electrolytic capacitor to heat up and concentrate its service life. Generally speaking, the switching current of flyback converter is relatively maximum.

　　就平板电视来说，为着能接受大电流，就急需尤其下挫电容的ESR。其青红皂白是，在数目字设备中，趁机机能的加进，电路的电流有越是大的矛头。

　　As far as flat panel TV is concerned, in order to accept large current, ESR with especially reduced capacitance is urgently needed. What's more, in the numeral equipment, the greater the current of the circuit will be.

　　开关电源是一种运用电门式决定的直流稳压电源，它以袖珍、轻量和高效率的表征被广泛应用于各种通信设施、家电、微机及其终端设备。看成输入滤波和平滑用意的铝电解电容器，它的质量和可靠性直接影响到开关电源的可靠性。倘或铝电解电容器失效，就会以致电键稳压电源的故障。

　　Switching power supply is a kind of DC regulated power supply which is determined by the switch mode. It is characterized by small size, light weight and high efficiency, and is widely used in various communication facilities, household appliances, microcomputers and terminal equipment. As the purpose of input filtering and smoothing, the quality and reliability of aluminum electrolytic capacitor directly affect the reliability of switching power supply. If the aluminum electrolytic capacitor fails, it will lead to the failure of the power supply.

　　开关稳压电源用铝电解容电器的失灵模式有击穿失效、挖沙失效、漏液失效及电参数超差失灵。内部击穿失灵又分成介质击穿和热击穿，对此大功率和大电流输出的开关电源用电解电容器，热击穿失灵常占势必百分比；电腐蚀引致铝引入条折和容电器芯子枯竭，使电钮稳压电源用铝电解电容器开掘失效的重中之重失灵模式；漏液是电钮稳压电源用铝电解电容器常见的失效模式，鉴于动用环境及劳作状态较严酷，常产生漏液失效；电钮稳压电源用铝电解容电器在利用中最常见的失灵模式是电容量调减、电击流叠加及损耗角正切值外加。

　　The failure modes of aluminum electrolytic capacitor for switching power supply include breakdown failure, dredging failure, leakage failure and electrical parameter out of tolerance failure. The internal breakdown failure is divided into dielectric breakdown and thermal breakdown. For the electrolytic capacitors with high power and high current output, the thermal breakdown failure often accounts for a certain percentage; the electrolytic capacitor for button regulated power supply is the most important failure mode due to the introduction of aluminum strip and the depletion of capacitor core due to electrical corrosion; leakage is the aluminum electrolytic capacitor for button regulated power supply The most common failure modes of aluminum electrolytic capacitors for button regulated power supply are capacitor reduction, electric shock current superposition and loss tangent addition.

　　在电子线路中电解容电器是短不了的，而且，就势电子设备的小型化，更其要求电解容电器兼备更好的频率特性、更低ESR、更低抵御、 更低ESL，更高耐压通性、无铅化，这也是电解电容器事后的上移系列化。

　　In the electronic circuit, the electrolytic capacitor is not short. Moreover, with the miniaturization of the electronic equipment, the electrolytic capacitor is required to have better frequency characteristics, lower ESR, lower resistance, lower ESL, higher withstand voltage and lead-free, which is also the upward shift serialization of electrolytic capacitor.