作为LED驱动电源中的重要部件，铝电解电容也必须达到耐高温、小型化、长寿命等要求。从而导致LED的设计变更频繁。由于行业准入门槛低及市场检验标准不一，以致于LED产品参差不齐。

　　As an important part of LED driving power supply, aluminum electrolytic capacitor must also meet the requirements of high temperature resistance, miniaturization and long life. As a result, led design changes frequently. Due to the low industry access threshold and different market inspection standards, LED products are uneven.

　　铝电解电容作为应用于LED上的被动元器件，当前市场上很多新的设计方案及工艺改进非常勉强，设计余量消弱，加之LED变换速度太快，相关的验证又不足，故LED应用端在电容材料的选用上容易存在误区。

　　As a passive component used in LED, many new design schemes and process improvements in the current market are very reluctant, and the design margin is weak. In addition, the LED conversion speed is too fast and the relevant verification is insufficient. Therefore, there are some misunderstandings in the selection of capacitor materials at the application end of LED.

　　1.LED市场端对产品的体积最小越好

　　The minimum volume of LED market is better

　　因为LED体积的限制，体积小型化是未来的必然趋向。与节能灯相比，LED设计工程师对小体积电容的追求几近苛求，节能灯的设计工程师深知电解寿命决定灯的寿命，所以在电解电容的选用上面非常的慎重，因为他们知道，适当加大体积对电解的散热及耐纹波能力都有重要帮助。

　　Because of the limitation of LED volume, miniaturization is the inevitable trend in the future. Compared with energy-saving lamps, led design engineers are almost demanding for small volume capacitors. Design engineers of energy-saving lamps know that electrolysis life determines lamp life, so they are very careful in the selection of electrolytic capacitors, because they know that properly increasing the volume is of great help to the heat dissipation and ripple resistance of electrolysis.

　　近两年来，LED产品更新换代过快，留给LED产品实验验证的时间极短，以致于LED工程师降低了对产品验证的周期，甚至于对铝电解电容采用简易检测或唯小型化及LOW ESR为标准论，这对电解电容的应用是一个极大的风险及挑战。

　　In the past two years, LED products have been updated too fast, leaving a very short time for LED product experimental verification, so that led engineers reduce the cycle of product verification, and even adopt simple detection or miniaturization and low ESR as the standard theory for aluminum electrolytic capacitors, which is a great risk and challenge for the application of electrolytic capacitors.

　　2.铝电解电容的阻抗越低越好

　　The lower the impedance, the better

　　阻抗低到什么程度才算合理，是不是越低越好，这个在LED应用中并无明显的共识或相应的标准。国内低阻抗的电解设计方案中对降低阻抗通常采用两个方案，一是提高电解液的含水量，一是用低密度或低厚度的电解纸。

　　There is no obvious consensus or corresponding standard in LED application to what extent the impedance is reasonable and whether the lower the better. There are two ways to reduce the impedance in domestic electrolytic design with low impedance, one is to increase the water content of electrolyte, the other is to use electrolytic paper with low density or thickness.

　　目前LED照明行业技术逐渐走向了成熟，LED灯具正朝着轻、薄、小的趋势发展，这对驱动电源的要求也越来越高。作为LED驱动电源中的重要部件，铝电解电容也必须达到耐高温、小型化、长寿命等要求。

　　At present, the technology of LED lighting industry is gradually becoming mature, and LED lamps and lanterns are developing towards the trend of light, thin and small, which requires higher and higher driving power supply. As an important part of LED driving power supply, aluminum electrolytic capacitor must also meet the requirements of high temperature resistance, miniaturization and long life.