AVX tantalum capacitors
   Short life of aluminum electrolytic capacitors has been found in application, not resistant against high temperature (military reached 125 degrees), capacitance with temperature changes significantly, as well as issues such as high ESR, forcing people to seek good performance of electrolytic capacitors, electrolytic capacitors tantalum Electrolytic Capacitor is a good performance. Tantalum electrolytic capacitors have both cathode cathode of solid and liquid forms. AVX tantalum electrolytic capacitors are the brand now carry out a detailed analysis of solid tantalum electrolytic capacitors, liquid cathodes of tantalum electrolytic capacitors will not be discussed here.

All problems of aluminum electrolytic capacitors
   Its root is used as the negative electrode electrolyte. Solid tantalum Electrolytic Capacitor anode solid oxide sharply. Since it is a solid, eliminating the electrolyte dries up as a result of the electrolytic capacitor failure and end of life issues is equally solid cathode is also no question of electrolyte boiling at high temperature and low temperature resistivity of electrolyte caused by viscous rising issues, so as to solve the problems in aluminum electrolytic capacitors at high temperature, low temperature. Because of the fierce resistance of dioxide rate only for the one-tenth of resistivity of electrolyte for aluminum electrolytic capacitors and even lower, tantalum Electrolytic Capacitor ESR can be an order of magnitude lower than the aluminum electrolytic capacitors, Electrolytic Capacitor the ESR is well mitigation issues.

1. DC polarity of the electrolytic capacitors are: determine the polarity, polarity sign on the capacitor on the substrate. Avoid reversed polarity may cause damage to the circuit or capacitor when the polarity is not fixed or time, using a bipolar capacitor. Note DC capacitors cannot be used in the Exchange.
2. Using voltage not greater than rated voltage: voltage is greater than the rated voltage, leakage current increases, could damage the capacitor. Recommended operating voltage rated voltage baifenzhiqishi~Bashi, operating voltage of the capacitors in the proposed use will prolong the life of the capacitor.

3. Do not allow excessive ripple current through the capacitor the ripple current flowing through the capacitor exceeds allowable value, fever will cause capacitor, capacitor would be reduced, damage the capacitor. The ripple current flowing through the capacitor not greater than the allowed value.
4. Rapid charge and discharge circuits, using specially designed capacitors: undergo rapid cyclical charging and discharging circuit, capacitor may damage its life may be due to volume decline, low temperature and shortened for reasons such as, in this circuit, be sure to use the specially designed capacitor.

5. Operating temperature range: temperature variations in the characteristics of capacitors, in case of higher temperatures, increased capacity, leakage current, Tan δ reduced under low temperature conditions, volume and reduced leakage current, Tan δ increases. Capacitors used at low temperatures to ensure that extended life expectancy.
6. Check the working frequency: electrolytic capacitor capacitance is usually measured in 100Hz or 120Hz. However remember volume decline in the increase of the frequency and Tan δ increases with the frequency increases, and the capacitor temperature.
7. Long time storage of capacitors, in use before the rated DC voltage: storing for a long time, the actual capacity of the capacitor Tan δ and not much impact, but often result in leakage current increases, pressure reducing. After prolonged storage capacitors, first gradually applying a DC voltage to rated voltage, and then use the.

8. Capacitor casing is not insulated with vaginal extreme: extreme capacitor shell, and Yin is connected by the electrolyte, if capacitor shell must work with the insulation, the capacitor installation location, insulation measures should be taken.
9. Capacitor terminals or leads not to exert excessive force: too much force applied to the terminals or leads may cause wire breakage or split Terminal and can cause damage to internal connections.
10. After the dip solder, circuit board cleaning: cleaning PCB fluxes and other attachments. In order to protect the PVC sleeve, printed signs and sealing materials are not damaged, halides or similar solvents cannot be used as a capacitor cleaning of capacitors. Recommended solvent for cleaning: methyl alcohol, ethyl alcohol, petroleum ether, propionic alcohol and General cleaning.

11. Welding temperature and duration when: soldering iron with PVC sleeve of capacitor to maintain a certain distance. When the capacitor when dipped in the pot, recommended temperature up to 260 ° c, it takes no more than 10 seconds, so as to avoid capacitor damage.
12. Printed circuit board hole layout: when you design a printed circuit board, install the hole should be equal lead spacing, and when you hole spacing greater than or less than the leader, when the capacitor is installed, will stress on the wire, may cause short circuits, circuit damage, leakage current is increased.