Kt Kingtronics Application and Precautions of E-Cap

铝电解电容器的应用和注意事项

1》应用场合
整流滤波，输出滤波
能量贮存，充放电
旁路，耦合
特殊用途
时间常数
音频电路
电机启动
校正电路

2》铝电解电容器使用注意事项
普通铝电解有正负极
电容器两端电压要小于额定电压（0.6-0.8 Ur)
普通铝不适用于频繁充放电电路
铝电解使用时，纹波电流不得超过其承受能力
铝电解工作环境温度应尽可能低且不得高于额定上限温度
铝电解长期存放后会重新老化
铝电解应存储于温度较低和干燥的环境中

3》铝电解电容器安装注意事项
铝电解的铝外壳与负极间不绝缘
安装时应尽量避免机械应力
铝电解焊接时应尽量避免长时间高温（＜270℃，4S）
印制电路板孔距应与铝电解脚距相匹配
带防爆阀的铝电解安装应留有足够空间
电容器的洗净要按产品规格书要求执行
铝电解电容器使用时要远离发热元件

4》铝电解电容器的性能特点
比容量高
具有自愈特性
具有单向导电性
工作电压有上限（600V)
损耗角较大，温度频率特性相对较差
绝缘性能较差
铝电解属有限寿命元件

Application and precautions of aluminium electrolytic capacitors

1. Application Occasions
Rectification Filter, Output filter
Energy storage, charging and discharging
Bypass, coupling
Special purpose
Time Constants
Audio circuits
Motor start-up
Calibration circuit

2. Considerations for the use of aluminium electrolytic capacitors
Ordinary aluminium electrolysis has positive and negative pole
Capacitor voltage at both ends of less than rated voltage (0.6-0.8 ur)
Ordinary aluminium does not apply to frequent charging and discharging circuits
The ripple current must not exceed its withstanding capacity when the aluminium electrolysis is used.
Aluminium electrolysis working ambient temperature should be as low as possible and must not exceed rated upper limit temperature
Aluminum electrolysis will be aging after long-term storage
Aluminium electrolysis should be stored in a low temperature and dry environment

3. Installation considerations for aluminium electrolytic capacitors
Aluminium electrolytic shell and non-insulated cathode
The mechanical stresses should be avoided as far as possible
Aluminium electrolytic welding should avoid long time high temperature (< 270 ℃, 4S)
The hole spacing of printed circuit boards should match the aluminum electrolytic foot pitch
Aluminium electrolytic installation with explosion-proof valves should be reserved enough space
The washing of capacitors shall be carried out according to the requirements of the product specifications.
Aluminium electrolytic capacitors should be used away from heating elements

4. Performance characteristics of aluminium electrolytic capacitors
higher capacity
Self-healing characteristics
Unidirectional conductivity
The operating voltage is capped (600V)
The loss angle is larger, the temperature frequency characteristic is relatively poor.
Poor insulation performance
Aluminium electrolysis is a finite life element

Please check more information at below link:
http://www.kingtronics.com/