EKMT421VSN271MR35S

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are one of the most versatile and widely used types of capacitors available. They are a type of polarized capacitor, which means that the voltage applied on one of the terminals must be higher in voltage than the other. They consist of an aluminum foil anode with an oxide layer acting as dielectric, a liquid or solid electrolyte acting as the cathode, and a paper or plastic separator between the anode and the electrolyte. By applying a voltage on the anode, an electric field is build up that draws the electrolyte up to it, forming the capacitance.

EKMT421VSN271MR35S application field and working principle

The EKMT421VSN271MR35S is a type of affordable aluminum electrolytic capacitor. It is mainly used in power supplies, such as TV and computer power supplies, to store energy and regulate the output voltage. It is also used in HVAC systems, factory automation systems, and pumps.

The EKMT421VSN271MR35S is a long-life electrolytic capacitor with a low impedance and high temperature coefficient. It has a rated voltage of 450V, a capacitance of 270 μF, and a temperature coefficient of -85±20 ppm/°C. It also has high reliability, a long life range of 2000-4000 hours at 85°C, and a high ripple current capability up to 1.6 A.

The working principle of the EKMT421VSN271MR35S aluminum electrolytic capacitor is simple. When power is applied, the applied voltage generates an electric field across the anode and the electrolyte. The electric field causes the electrolyte to move up the anode, forming a thin layer of capacitance. This accumulation of charge is stored inside the capacitor, allowing current to flow from one terminal to the other.

Due to the nature of the oxide layer, the EKMT421VSN271MR35S is a polarized capacitor. In order for it to work properly, the negative terminal must be connected to the anode and the positive terminal to the cathode. This ensures that the electric field generated is in the correct direction and prevents the electrolyte from moving away from the anode.

The EKMT421VSN271MR35S aluminum electrolytic capacitor is widely used in various electronic applications due to its low cost, long life, and high temperature coefficient. It is especially popular in HVAC systems, factory automation systems, and pumps due to its high reliability and ripple current capability.

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