ESMM421VSN121MQ25S

Aluminum Electrolytic Capacitors: ESMM421VSN121MQ25S Application Field and Working Principle

Aluminum electrolytic capacitors are a type of electrolytic capacitor, which is a polarized capacitor whose anode or positive plate is made of an electrically conductive aluminum foil with an etched surface and with a thin layer of aluminum oxide which acts as the dielectric. The aluminum oxide layer is formed by applying a voltage between the plates in forming (boosted to High voltage).The cathode is made of a moistened layer of manganese dioxide. A layer of conductive solid that serves as the electrolyte completes the capacitor.

The ESMM421VSN121MQ25S is an aluminum electrolytic capacitor from Panasonic. It is a radial lead miniature aluminum electrolytic capacitor designed for high temperatures and high voltages. It is suitable for electrical discharge equipment applications, such as return electrode in pulsed power and radio frequency applications, electrolytic plate in x-ray lithography, and high voltage DC power supply in X-ray equipment. It has a high capacitance and low ESR, which make it ideal for applications that require very high current pulses.

Applications:

ESMM421VSN121MQ25S aluminum electrolytic capacitors are widely used in numerous types of applications, such as:

• High voltage power supplies
• DC-DC converters
• Motor control applications
• AC-DC converters
• Switching power supplies
• DC-DC power supplies
• AC-DC oscillations
• DC-DC converters
• High voltage inverters
• High voltage DC-DC Converters
• High voltage lighting power supplies
• Power factor correction

Working Principle:

The working principle of aluminum electrolytic capacitors is based on the fact that they are essentially two conducting plates separated by an insulating layer of aluminum oxide. This thin layer acts as a dielectric and forms an electrical barrier between the two plates, allowing them to store an electrical charge. When a voltage is applied across the aluminum electrolytic capacitor, the high voltage breaks the aluminum oxide’s electrical barrier, allowing the capacitor to store a charge in the form of electric fields and electrons.

Aluminum electrolytic capacitors have a high capacitance, which means they can store up to ten times more charge than other capacitors. This makes them ideal for electrical applications that require very high current pulses and require high stability over a wide temperature range. Furthermore, aluminum electrolytic capacitors have a low ESR, which means that they can handle the high frequency signals that other types of capacitors cannot.

Conclusion:

The ESMM421VSN121MQ25S aluminum electrolytic capacitor is an ideal choice for high temperature, high voltage applications. This capacitor is suitable for numerous types of applications including high voltage power supplies, DC-DC converters, AC-DC converters, switching power supplies, DC-DC power supplies, high voltage inverters, high voltage lighting power supplies, and power factor correction. It has a high capacitance and low ESR, making it suitable for applications needing very high current pulses and requiring high stability over a wide temperature range.