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Technical Notes
These notes will help explain some fundamentals of aluminum electrolytic technology. We hope this will contribute to the effective and efficient use of aluminum electrolytic capacitors in your design applications.
Prerequisites for Capacitor Installation
Installation of Non-Solid and Solid Aluminum Electrolytic Capacitors
 Precaution 1. Confirm rated voltage and capacitance of capacitors before installation. 2. Confirm the polarity of the capacitors before installation. 3. Do not use capacitors that have been dropped. 4. Do not deform the can or cases of capacitors. |
Explanatory Notes
1. Capacitors with incorrect ratings mistakenly installed in device circuits may cause the circuit to malfunction. (1) If a capacitor has a lower rated voltage than the circuit voltage, an overvoltage will be applied to the capacitor. (2) If a capacitor has a capacitance rating too low for the circuit, the capacitor may overheat due to the ripple current or cause decreased smoothing. 2. If the polarity is mistakenly reversed, the capacitor will be damaged. Even if there is no apparent mechanical damage, the capacitor should not be reused. 3. Do not use a capacitor that has been dropped, it may be electrically and/or mechanically damaged. 4. Do not deform the capacitor can to fit into a device. If it is deformed, the capacitor will lose its seal integrity and fail to meet specified lifetime. In an extreme case, the electrically conductive, flammable electrolyte may leak out.
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