420KXW56MEFC12.5X40

Aluminum Electrolytic Capacitors

Aluminum electrolytic capacitors are polarized electrolytic capacitors whose anode electrode is made of a pure aluminum foil with an etched surface. They include a solid liquid electrolyte, which permits the formation of an insulating aluminum oxide layer on the surface of the aluminum anode. It is this aluminum oxide layer that creates the very high dielectric strength in these capacitors. The oxide layer acts as an electrical insulator while at the same time creating a very large area for the capacitor’s effective electrodes. The plate area of aluminum capacitors is usually much larger than that of any other type of capacitor.

The 420KXW56MEFC12.5X40 aluminum electrolytic capacitor is a high precision, low ESR (equivalent series resistance) circuit component. It is typically used in applications where high dielectric strength, low loss, and superior frequency characteristics are required. It has a wide operating temperature range of -55°C to +125°C (-67°F to +257°F) and is rated for high ripple current. This type of capacitor is especially popular in high frequency applications due to its good temperature stability.

The working principle of the 420KXW56MEFC12.5X40 aluminum electrolytic capacitor is based on Faraday\'s law of electrolysis. In this type of capacitor, the electric field strength between the two plates of the capacitor is very high. This high electric field strength creates a strong electrostatic attraction between the two plates which then creates a large capacitance. When a voltage is applied to these plates, the electric field strength increases and this creates an increased capacitance. At some point, this capacitance reaches a maximum value and this is known as the rated capacitance. As the voltage is increased further, the electrostatic attraction between the plates decreases and the capacitance decreases.

The 420KXW56MEFC12.5X40 aluminum electrolytic capacitor is most commonly used in medical device, telecom and consumer electronics application, particularly in power supplies, audio and automotive electronics. Examples of applications include power-supply decoupling, snubber circuits, line filters, inductor applications, DC/DC converters, EMI/RFI filters.

The 420KXW56MEFC12.5X40 aluminum electrolytic capacitor is also used in power measurement systems, automotive circuit protection, professional audio, audio amplifiers, and medical equipment. Its low ESR, high dielectric strength, and wide operating temperature range make it well-suited to these applications. In particular, it can be used to filter AC ripple current, providing superior stability and accuracy in power regulation.

The aluminum electrolytic capacitor is also known to be very stable and consistent over time. This is due to the fact that the aluminum oxide layer created on the surface of the aluminum foil provides a highly efficient and stable electrical insulation. The aluminum electrolytic capacitor also has very low leakage current and very low electrical loss. It also offers a very good frequency response.

In conclusion, the 420KXW56MEFC12.5X40 aluminum electrolytic capacitor is a high precision, low ESR capacitor that is suitable for a wide range of applications. Its high dielectric strength, low leakage current, and high capacitance makes it well-suited for use in medical device, telecom and consumer electronics applications. It is also known to be very stable over time, offering a very good frequency response and low electrical loss.