1 in general, aluminum electrolytic capacitor is polar, the polarity should be marked on the capacitor. In the installation should pay attention to the polarity may be inserted opposite, also should not be applied reverse voltage or AC voltage, otherwise it will cause a short circuit, or make the capacitor in the circuit damage such as the need to reverse polarity or do not know its polarity, should use non polar capacitor.
2, on both ends of the Capacitor DC voltage can not be higher than the rated. When the DC capacitor voltage is applied to the higher than the rated working voltage, will cause the leakage current increases rapidly, causing the capacitor damage. Recommend the use of 70-80% rated voltage, will contribute to the extended service life of the capacitor.
Ripple current for 3, applied to the capacitor shall be rated ripple current allowable. If ripple the applied current is too large, the deterioration of electrical characteristics of capacitance will cause and damage. Peak ripple voltage and DC voltage and rated voltage should be not greater than the capacitor, and the peak ripple voltage should be less than the DC working voltage.
4, the aluminum electrolytic capacitor must be used in operating temperature range of the permitted to work at room temperature, it can ensure a longer life. 5, D ≥ 8mm in diameter, are provided with a safe valve device. General wire, welding needle structure product safety valve at the bottom of the casing, screw structure product safety valve in the shell. When in use, the safety valve should be to maintain a certain gap with other goods, proposed to retain the following gap: the above Φ 8 and Φ 16:2mm Φ 18 and Φ 35:3mm; above; Phi 42 and above; more than
6, when the mounting screw structure of capacitor, sealed port upwards; when the horizontal mounting screw structure of capacitor, the positive position should be upward.
7, the capacitor when the safety valve should not be down, the safety valve do not install a line type conductive body nearby, so as not to release the gas out of liquid caused by short circuit.
The release of 8, products within the gas pressure is higher from the safety valve, the pressure release steam liquid with the attached to the safety valve is not as liquid leakage.
9, the capacitor should be stored at room temperature, no acid, alkali free and normal temperature environment. If exposed to high temperatures, such as direct sunlight, the life will be affected; such as in acid or alkali and high temperature gas environment, will affect the lead solderability.
10, the aluminum electrolytic capacitor leakage current can have increase tendency in the long-term storage. Therefore, the capacitor has long time placed before the first application of rated voltage of room temperature aging 6~8 hours, so that the electrical properties of normal.
11, manual welding:
The welding conditions should meet the following requirements:
Temperature: 350 ℃
Welding time: 3 seconds.
Note that the iron can not come into contact with the body of capacitor.
12, should not lead or end force unnecessary in the lead wire capacitor. When after the PC board should not be forced to remove the capacitor welding capacitor: should not move the PC through the holding capacitor, the capacitor of the typical stress situations should be avoided:
After welding the capacitor inclined or bent;
Terminal spacing is not suitable for mounting hole PC plate.
13, the aluminum electrolytic capacitor shell and the negative terminal is not insulation. On the PC board, aluminum electrolytic capacitor is not connected with any conductor, otherwise it may cause a short circuit. The capacitor switching power supply, at the bottom of the casing and the top are equipped with resistant insulating sleeve and a gasket pressure, to ensure safe use.
14, the capacitor in the handling, testing and use of the process should be light, light, so as not to touch the capacitor, affect the appearance and electrical properties.
15, the lead structure capacitor shell diameter ≥ 14mm, the lead not fixed by