B85321A4205B201

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Feed Through Capacitors, including B85321A4205B201, are components on a printed circuit board (PCB) that allow the electricity to “leap” across the board. They are also known as plated through holes, shorted plated through holes, or high frequency feed through capacitors. They are used to protect transient energy, connect analog and digital signals, and increase the amount of current on the board.

The standard, axial, Feed Through Capacitor, such as the B85321A4205B201, is generally a two-terminal device that provides a signal-ground reference from one side of the board to the other. It is typically built with a metal body and has an insulating layer between the two conductive metal layers. The layers are generally composed of either gold plated nickel or chromium. The center of the capacitor is filled with an insulating material such as polypropylene film or ceramic. The two layers are connected together in series by a dielectric material such as cotton, paper, ceramic, polyester, or Mylar.

The main application of the B85321A4205B201 Feed Through Capacitor is as a signal-ground reference from one side of the board to the other in order to reduce signal noise. It can also be used to protect transient energy as well as increase the current carried by the board. Additionally, this type of capacitor is often used to connect analog and digital signals, as its two-terminal structure can provide much lower impedance than a single terminal device, allowing for easier tracing and data flow.

The working principle of a Feed Through Capacitor is to provide an electrical connection between two points on a printed circuit board. The electrical connection is made up of two metal conductors plated with gold or chrome, which are separated by a dielectric material such as polypropylene film, paper, or ceramic. When a voltage is applied to the two conductors, an electric field is created between them, which diverts the current to flow through the dielectric material, thereby limiting the flow of current between the two points.

The B85321A4205B201, as a type of Feed Through Capacitor, serves mainly the purpose of providing a signal-ground reference from one side of the board to the other. It is also used for other common applications such as protecting against transient energy, connecting analog and digital signals, and increasing the amount of current flowing through the board. It operates with the same principles as most other types of feed-through capacitors, by using two metal layers separated by a dielectric that allow for the efficient transfer of electricity across the board.

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