EET-HD2W121HJ

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Aluminum electrolytic capacitors are one of the most popular passive electronic components, widely used in the field of power electronics, audio and digital products, industrial electronic products and so on. The EET-HD2W121HJ capacitor is a type of aluminum electrolytic capacitor, with a rated voltage of 25V DC and a rated capacitance of 120uF.

The EET-HD2W121HJ capacitor is made with aluminum foil anodes, which are etched to attain a very large specific surface area. The surfaces are then coated with a solid organic electrolytic that acts as an electrical insulator. The solid electrolyte and anode are then rolled into a cylinder and inserted into an aluminum shell. A second aluminum foil cathode is attached and an electrolyte solution is added. The electrolyte solution chemically reacts with the anode foil, enabling current to flow between the anode and cathode. As a result, when external voltage is applied, it causes an electric charge to accumulate on the anode, making the aluminum electrolytic capacitor approach the capacitance.

The application fields and working principles of an EET-HD2W121HJ aluminum electrolytic capacitor are mainly determined by its rated voltage and capacitance. It can generally be used in conditions where a stable voltage and current source is needed, such as power supply filtering, buffering circuits, oscillations, low-frequency amplifications, energy storage, etc. As its rated capacitance is 120uF, it is suitable for applications with medium or high frequency, such as PWM controllers, switching power supplies, motor surge current suppression, etc.

The most common type of rating used when describing the performance of an aluminum electrolytic capacitor is the Ripple Current. This is the alternating electric current in the capacitor, in which pluses and minuses alternate at the same frequency as the alternating current (AC) power supply. By using a capacitor with a high ripple current rating, users can ensure that the capacitor does not heat up excessively due to large alternating current. An EET-HD2W121HJ capacitor has an effective ripple current rating of 1.2A at 105°C, which is suitable for many medium to high frequency applications.

The aluminum electrolytic capacitor is a widely used passive electronic component, with a wide range of application fields and working principles. The EET-HD2W121HJ is one of the most popular and cost effective aluminum electrolytic capacitors, with a solid electrolytic, anode and cathode structure. It is available in a variety of capacitance and voltage ratings, and can be used in several applications, such as power supply filtering, oscillations, low-frequency amplifications, motor surge current suppression, etc., where it provides a stable voltage and current source.

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