EKZM250ETD102MJ25S

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Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are a type of capacitor, specifically electrolytic capacitors, typically consisting of an anode, usually in the form of an aluminum foil with an etched surface, a cathode structure and an aqueous electrolyte. This is one of the types of capacitor that is widely used in most electronic applications, due to its high volumetric efficiency and low cost. Aluminum electrolytic capacitors can be further divided into four categories according to the packaging configuration: cylindrical, SMT sealed, axial lead and radial lead.

EKZM250ETD102MJ25S Capacitors

The EKZM250ETD102MJ25S is an aluminum electrolytic capacitor which is widely used in modern day consumer electronics. This particular capacitor is designed to have a temperature range of -45 to 105 °C, a voltage of 37V DC, and a capacitance of 25µF; the ESR is typically 40mΩ. This capacitor is constructed with an aluminium anode, made of etched aluminum to ensure maximum surface area. The cathode is formed by depositing a conductive layer on a stainless steel sleeve. The electrolyte used in the EKZM250ETD102MJ25S capacitor is typically a solid organic electrolyte.

Application Fields

The EKZM250ETD102MJ25S capacitors are suitable for a wide variety of applications in consumer electronics such as power supplies, computers, and audio/video equipment. It can also be used in rugged applications such as those found in motor starters, automotive systems and military equipment. Generally, the applications involving a capacitor like this include power decoupling, energy storage, frequency tuning, and signal filtering. Due to its relatively low ESR, the capacitor is particularly suitable for applications that require high capacitor performance with low ESR characteristics.

Working Principle

The operating principle of the EKZM250ETD102MJ25S capacitor is based on the double layer capacitance effects of the electrolyte at the interface between the anode and cathode. This requires that the electrolyte be an ionic conductor and that the anode and cathode be made of different conductive materials. When an external electric field is applied across the interface between the anode and cathode, the anode material will induce an opposite polarity charge at the electrochemical interface with the electrolyte, thus creating a double layer of charge at the anode surface. The double layer allows current to flow through the capacitor until the dual layer of charge is saturated. In practice, the EKZM250ETD102MJ25S aluminum electrolytic capacitor acts as a high-impedance device, allowing currents to flow through it, while at the same time blocking out large voltage spikes.

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