SH330M200ST

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Aluminum electrolytic capacitors are electrical components made up of two elongated metallic plates – positive and negative – surrounded by a dielectric material and a copious amount of electrolyte – usually a liquid chemical medium such as sulfuric acid. The positive plate is made of aluminum, which is lined with an oxide layer to maintain the contact resistance, whereas the negative plate is made of paper board that is soaked in the electrolyte. The electrolyte then acts as the second plate, providing the electric charge to the capacitor. In this way, the capacitor acts like a storehouse of energy, absorbing electrical charge from the power supply and then releasing it back to the circuit by using electric field.

The SH330M200ST type aluminum electrolytic capacitor is specifically designed for high temperature applications in large, demanding power supplies. This capacitance type has a larger volume than the normal version, which makes it better suited for dissipating heat quickly in high voltage circuits. The SH330M200ST has an operating temperature range from -55°C to +105°C, and can operate at higher temperatures for limited periods due to its enhanced heat dissipation capability. The reduced equivalent series resistance and lower internal loss make the SH330M200ST suitable for applications such as DC/DC converters, Uninterruptible Power Supplies (UPS) and Inverters.

In addition to its thermal capabilities, the SH330M200ST also features a low impedance for maximum ripple current, making it an ideal choice for power factor correction (PFC) circuits. Its low ESR also helps reduce the peak voltage stress, which is particularly important for applications such as an automotive engine start-up in cold weather conditions. The SH330M200ST has an operating voltage of 60V and a capacitance rating of 330μF, making it suitable for applications with low power factor levels.

The SH330M200ST owes its excellent performance characteristics to its construction, as it is made up of a carbon-coated aluminum foil as the anode, along with aluminum oxide (Al₂O₃) as the dielectric, and a sleeve filled with an electrolyte, such as sulfuric acid. When voltage is applied to the SH330M200ST, the aluminum ions are attracted to the negative plate, where they form an oxide layer. This forms the electrical path between the two plates, creating the capacitance, and allowing current to flow from the anode to the negative plate. The electrolyte then acts as an electrolytic medium, maintaining the dielectric integrity of the plates.

In conclusion, the SH330M200ST aluminum electrolytic capacitor offers exceptional performance in high temperature applications, thanks to its enhanced heat dissipation capabilities, low equivalent series resistance, and low internal loss. With its low impedance for maximum ripple current, the SH330M200ST is ideal for power factor correction applications, as well as for pulsed circuits, automotive engine start-ups, and other power-intensive applications. It is also highly reliable, and with its temperature range of -55°C to +105°C, it can withstand serious adverse conditions.

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