Aluminum Electrolytic Capacitors Understanding Polarity Voltage in Solid Oxide Electrolyzers Specifications 470UF/25V 5.5*14

Matters needing attention
Notes for using aluminum electrolytic capacitors
(1) DC aluminum electrolytic capacitor should be used according to the correct polarity When the DC aluminum electrolytic capacitor is connected to the circuit according to the reverse polarity, the capacitor will short circuit, and the resulting current will cause damage to the capacitor. If it is possible to apply a positive voltage to the negative lead, select the nonpolar product.
(2) Use it below the rated working voltage When the applied voltage on the capacitor is higher than the rated working voltage, the leakage current of the capacitor will rise and its electrical characteristics will deteriorate in a short time until damage. Note that the peak voltage does not exceed the rated working voltage.
(3) Rapid charge and discharge use When conventional capacitors are used for rapid charging, their service life may be reduced by falling capacity, sharp temperature rises, etc.
(4) Storage of the capacitor When the aluminum electrolytic capacitor is stored for a long time, the leakage current usually increases, the higher the storage temperature, the faster the leakage current rises, the longer the storage time, the higher the leakage current value. Therefore, attention should be paid to the storage environment and time. After the voltage is applied to the capacitor, the leakage current value will drop continuously. If the rise of the leakage current value of the aluminum electrolytic capacitor has a bad effect on the circuit, please charge it before use.
(5) The applied ripple current should be less than the rated value When the applied ripple current exceeds the rated value, the capacitor temperature will rise to be too high, the capacity will decrease, and the impedance will increase (DF increases) will shorten. The peak value of the applied ripple voltage shall be less than the rated operating voltage.
(6) Use of the ambient temperature The service life of aluminum electrolytic capacitors is affect by the ambient temperature. According to scientific statistics, the use of ambient temperature decreased by 20℃ its service life increased by 10 times.

(7) Lead line strength When a tensile force is applied to the capacitor lead line, the tension will act inside the capacitor, which may cause a short circuit, open circuit or rising leakage current.weld the capacitor to the circuit board, do not shake the capacitor strongly.
(8) Heat resistance during the welding process When the solid polymer capacitor is loaded into the circuit board for immersion welding or wave welding, the product body may degrade the polymer layer and increase the leakage due to the long welding time and high temperature.
(9) The installation hole distance and the installation position of the circuit board The design of the mounting hole of the circuit board shall be consistent with the lead pin distance in the product specification. If the capacitor is forced into the circuit board with unmatched hole distance, there will be stress on the lead line, which may lead to short circuit or leakage current rise.
(10) About the cleaning after welding
① Capacitors cannot be cleaned with halogenated organic matter series of cleaning agents. If cleaning is necessary, use a cleaning agent that guarantees the capacitor quality. ② For the cleaning agent that can ensure the quality of capacitors,please do not keep it in the cleaning solution or sealed container after cleaning. After cleaning, please dry with the circuit board in the hot air for more than 10 minutes, and the temperature of the hot air should not be higher than the upper limit of the capacitor.
(11) About fixative and coating (coating agent)
① Please do not use fixatives and coatings (coatings) containing halogenated organic matter series. ② Please do not allow the fixative and coating (coating agent) to seal the capacitor seal part (terminal side).
7.2 Compliance with RoHS Compliance with the latest EU RoHS standards, if the customer has special requirements, the relevant agreement signed by both parties shall prevail.
7.3 Compliance with REACH In compliance with the latest EU REACH
Directive

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