Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors (also known as electrolytic capacitors, electric double layer capacitors) are capacitors with electrolytic electrolytes, comprising two layers of aluminum foil with an oxide film on the surface of the anode, and plastics as insulation materials. Their characteristics include large capacity, small size and low cost.

UCX1V821MNQ1ZD application field and working principle

UCX1V821MNQ1ZD is an aluminum electrolytic capacitor. Its application field includes anti-interference of radio and TV, signal coupling of distributed channel, detection and recording of various kinds of signal, power switching regulation, output filter of power supply and decoupling filter of audio. Its working principle is based on the classical capacitor principle, which states that the electric charge on the plate is stored by two metals with different electric potential and dielectric material between them.

UCX1V821MNQ1ZD aluminum electrolytic capacitor is made up of an anode which is an Electrolytic aluminum foil with an oxide film as its dielectric layer, a cathode which is a rolled strip of aluminum foil coated with an electrolyte, and an insulating sleeve which is made of resin, vinyl or paper. The anode and cathode are connected with a lead wire. Besides, the case is usually filled with the electrolyte to wrap up the anode and cathode.

The electrolyte is an aqueous solution containing lithium bicarbonate, lithium salt, sorbitan sesquioleate and complexing agent. The electrolyte participates in the formation of the dielectric film and improves the capacitance of the device. Besides, its dielectric layer will form the electrochemical effect when exposed to electrical field. This electrochemical effect keeps the electrical charge stored within plate and insulation sleeve, acting as a dielectric barrier between the two plates so that an electric current can’t flow through.

The capacitance of UCX1V821MNQ1ZD aluminum electrolytic capacitor lies between 0.47-47µF, and its capacity lies within the voltage range of 16-100V. The advantages of this aluminum electrolytic capacitor are high capacitance, small size, light weight, large operating temperature and good long-term reliability. Because it uses a different manufacturing process and different materials compared to other capacitors, it has a much lower cost.

Applications of UCX1V821MNQ1ZD aluminum electrolytic capacitor include anti-interference of radio and TV, signal coupling of distributed channel, detection and recording of various kinds of signal, power switching regulation, output filter of power supply and decoupling filter of audio. Its wide application fields on account of its large capacity and low cost make it very popular and widely used in modern electronics.