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Note the use of high voltage ceramic capacitor
2022-02-19 17:44
High voltage ceramic capacitor is a wafer shaped capacitor medium on ceramics. The case is ceramic and used for insulation. One of the main characteristics of high voltage ceramic capacitor is high voltage, the voltage is generally greater than 1KV. High voltage ceramic capacitors are 2KV, 3KV and conventional 4KV voltage. Often used in high voltage situations. The highest voltage up to 30KV.
High voltage ceramic capacitor with high power and high voltage field, is small, high voltage and frequency characteristics. In recent years, with the material, electrode and manufacturing technology, there is considerable progress in the development of high voltage ceramic capacitor, and has wide application. High voltage ceramic capacitor has become one of the high voltage power electronic products indispensable element.
So in the use of high voltage ceramic capacitor, we should pay attention to what
One: soldering tin
The soldering temperature and time is not appropriate may cause the abnormal contraction of the surface of the tube rupture, sometimes high temperature can be achieved by guide wire and terminal to internal heat conduction element, will cause adverse effects on high voltage ceramic capacitors, so to avoid high temperature and long time of solder.
Two: mechanical strength of guide pin and terminal
Do not apply excessive force on the guide pin and terminal. Please do not throw is welded in high voltage capacitor on the PC board, or by the high voltage ceramic capacitor for the whole point of application filed or mobile PC board.
Three: overload
Do not overload voltage when the voltage is applied continuously, overload leakage current of high voltage ceramic capacitor will rapidly increase, so the high voltage ceramic capacitor voltage should not exceed the rated value.
Four: explosion-proof hole
An aluminum high voltage capacitor designed for explosion-proof holes. When used, the explosion-proof hole shall maintain a space distance of at least 3MM above the other mechanisms. If such conditions are not met, the explosion-proof hole will not operate properly.
Five: ripple current
Do not exceed the rated ripple current applied maximum allowable value above the ripple current, high ripple current is applied to high voltage aluminum capacitor temperature and abnormal rise caused by high voltage aluminum capacitor deterioration and damage.
Six: the use of temperature and life
The use of high voltage ceramic capacitor temperature do not exceed the maximum temperature of the set range.
Seven: charging and discharging
Often and fast discharge will make the temperature of high voltage capacitor of the abnormal rise, the leakage current increases, the reduced capacity, sometimes causing damage to the product.
Eight: storage
High voltage ceramic capacitor placed after long time after, usually the leakage current increasing tendency. Capacitors shall be stored at temperatures and temperatures not exceeding -40 to 85 range. Selection of high voltage ceramic capacitor to find the original production of regular products is also very important.
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