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Aluminum Electrolytic Capacitors: SHR47M063ST application field and working principle

Aluminum electrolytic capacitors are a type of capacitor with a solid aluminum plate as the anode that is immersed in an electrolyte solution and an isolated aluminum oxide layer is formed as a dielectric medium. The cathode is typically formed from a plate of aluminum foil coated with a conductive carbon layer. The electrolytic capacitor consists of two aluminum plates which are separated by a paper spacer and a specific type of organic dielectric material. The entire assembly is then immersed in an electrolyte solution such as sulfuric acid, for example.

The SHR47M063ST is an aluminum electrolytic capacitor that offers high capacitance and low ESR (equivalent series resistance). The SHR47M063ST is a non-solid tantalum surface-mount capacitor which is suitable for high-frequency, low-temperature applications. The SHR47M063ST provides a higher capacitance and lower ESR than other aluminum electrolytic capacitors. The capacitance of the SHR47M063ST ranges from 47µF to 570µF, and it has a voltage rating of 6.3V to 16V.

Application Fields:

The SHR47M063ST aluminum electrolytic capacitor is widely used in circuit boards for power supply, audio equipment, automotive electronics, and telecommunications. It is typically used in applications where power levels are high and the temperature range is low. Applications include switching power supplies, DC-DC converter circuits, snubber circuits, and high-efficiency power amplifiers. It is also suitable for various temperatures from -55℃ to +105℃.

Working Principle:

Aluminum electrolytic capacitors are essentially a two-electrode device. The anode consists of a thin layer of pure aluminum foil sandwiched between two spacer/separator layers. This is then immersed in an electrolytic solution typically composed of ethylene glycol, organic electrolyte, and other chemicals. This solution helps increase capacitance and enables the capacitance value to be maintained over a wide temperature range. The cathode is composed of a thin layer of sulfonated graphite. When a voltage is applied to the anode, a thin oxide layer forms on the aluminum foil. This acts as the dielectric which stores the charge.

The amount of charge that can be stored in an aluminum electrolytic capacitor is larger than most other types of capacitors. This makes the aluminum electrolytic capacitor an ideal choice for high-capacity applications such as high-power audio equipment and power supplies. The oxide layer also acts to maintain a fairly stable capacitance at different temperatures, and the device also has a low equivalent series resistance (ESR) which helps reduce power loss.

Conclusion:

The SHR47M063ST aluminum electrolytic capacitor is a high-performance device with a very low ESR. It is suitable for applications which require higher capacitance and lower power loss. It is commonly used in power supply, audio equipment, automotive electronics, and telecommunications applications. The device utilizes a thin layer of oxide on an aluminum plate as the dielectric medium which helps to improve capacitance and maintain a steady capacitance over a wide temperature range.

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