UPA0J472MHD

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Aluminum electrolytic capacitors are commonly used in power supplies, filtering and circuits requiring high-frequency bypassing. They are available with capacitances ranging from a few microfarads up to many hundreds of microfarads. The UPA0J472MHD is a radial leaded capacitor having an anode-cathode dielectric consisting of an anode made of a sintered aluminum pellet and a cathode of an oxide-impregnated paper. This device has a maximum ripple current of 18.6 A, and is ideal for applications requiring high-frequency filtering, low ESR, and low capacitance derating.

Working Principle

The UPA0J472MHD is an axial leaded aluminum electrolytic capacitor utilizing a wet electrolyte. This device is basically a cylindrical wound paper capacitor impregnated with an electrolyte that is used to provide a high-voltage insulation barrier between the two conductive plates. The anode consists of an anodized aluminum or tantalum foil that is sintered into the form of a paper pellet while the cathode consists of a paper impregnated with an electrolyte solution. When the capacitor is connected to a potential, a surface ionic layer forms on the anode that captures and holds electric charge.

The capacitance of the UPA0J472MHD is determined by the area and thickness of the electrodes and the dielectric constant of the electrolyte. The amount of capacitance can also be controlled by the deposition of an additional oxide layer on the anode. The device is polarized, which means that it must be connected in the correct orientation to prevent reverse biasing and damage. If reverse biasing occurs, the capacitor will fail and be rendered useless.

Uses

The UPA0J472MHD is typically used in applications requiring a high-frequency bypass capacitor. This device is often used as a high-frequency bypass capacitor in power supplies for instrumentation, audio, and other equipment requiring low capacitance derating. It is also used in circuits requiring high-frequency filtering, such as high-frequency rectifying circuits or filter circuits.

The UPA0J472MHD is also commonly used in circuits that require low ESR (equivalent series resistance) and high ripple current. This device is able to provide excellent high-frequency performance due to its low ESR and high capacitance rating. It is often used in SMPS (switched mode power supply) designs to help reduce noise and ripple in the power supply.

Conclusion

The UPA0J472MHD aluminum electrolytic capacitor is a useful device for applications requiring high-frequency bypassing, low ESR, and low capacitance derating. This device can be used to achieve superior performance due to its low ESR and high ripple current ratings. It is typically used for high-frequency filtering and bypassing in power supplies for instrumentation or other equipment.

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