Electrolytic Capacitor Wholesale Distributors Supply Reliable and Cost Effective Capacitors

1. Electrolytic Capacitor Wholesale Distributors Supply Reliable and Cost Effective Capacitors An electrolytic capacitor is a sort of capacitor that uses an electrolyte to achieve a larger capacitance than the other type of capacitors. An electrolyte is a gel containing a high concentration of ions. Almost all electrolytic capacitors are polarized, which means that the voltage on the positive terminal must be greater than the voltage on the negative terminals. There are many electrolytic capacitor wholesale distributors supply reliable capacitors which are widely used in many applications, especially where leaded types can be used and where high capacitance values are needed. In general term electrolytic capacitors are used for three different capacitor family members: Aluminum electrolytic capacitors Tantalum electrolytic capacitors Niobium electrolytic capacitors All electrolytic capacitors are polarized means the voltage of anode must be higher than the cathode. They are used for noise filtering in power supply. During normal operation, the cathode is most commonly marked with a minus sign along the body of the capacitor whereas the anode must be at a positive voltage in relation to the cathode. The advantage of large capacitance associated with few drawbacks such as current leakage, equivalent series resistance and limited lifetime. Specifications of the electrolytic capacitor Capacitor through the hole, surface mount or chassis mount are the specifications of the Electrolytic Capacitor you can have. Capacitors through the hole and chassis mount caps have a capacitance, voltage, and temp right on the part. They may have the manufacturer name and part number. Surface mount electrolytic caps is common to find, it simply lists a voltage, voltage code, and capacitance number and series number. Therefore, it is a bit tricky to identify and see if other numbers appear to be of required voltage or to be more of a lot/series number. Characteristics of electrolytic capacitor Capacitance drift As time passes, the capacitance of the electrolytic capacitors drifts from the normal value and they have about 20% large tolerance. An aluminum electrolytic capacitor is expected to have a measured value between 37.6 µF and 56.4 µF. Tantalum electrolytic capacitors cannot be always used as a direct replacement because their maximum operating voltage is lower.

2. Polarity and safety Electrolytic capacitors must be forward biased, means higher voltage must be at the positive terminal than the negative terminal. If the capacitor becomes reverse biased, the insulating aluminum oxide might get damaged, and as a result, a short circuit occurs between the two capacitor terminals. As the large current running through electrolytic capacitor it causes overheated and leaks, therefore, the enclosure may get burst. In order to prevent the enclosure from exploding, a safety valve is installed in the enclosure; it is made by making a score in the upper face of the capacitor. Additional safety measures may need to be taken when cleaning after and replacing an overheated electrolytic capacitor since electrolytes may be toxic or corrosive. There are couples of steps you can take to make finding a replacement easier if you are finding electrolytic capacitor wholesale distributors for a capacitor that has gone bad or looking for a one as a replacement that is obsolete.