W3F11A2218AT1F Filters

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Feed Through Capacitors are widely used in electrical and electronic equipment for filtering high frequency electronic noise in low voltage power lines. This type of capacitor is especially suited for use in high-speed, high-power electronic systems due to their ability to reduce noise.

The W3F11A2218AT1F feed-through capacitor is a premium-grade, high-reliability feed-through capacitor featuring a small package size and extremely low parasitic inductance. It is designed for high-speed, high-stress applications that are subject to temperature changes and voltage transients, such as telecommunications, power supplies, imaging, medical, aerospace, military, industrial, networking and instrumentation systems.

This feed-through capacitor is ideal for EMI/RFI suppression and filtering, ripple noise attenuation, power line harmonic filtering, signal line conditioning, suppression, etc.

The feed-through capacitor\'s working principle relies on the principles of electrostatics, which can be broken down into two components: capacitor dielectrics and capacitance. Capacitors are two-terminal components that store electrical energy in the form of an electrostatic field. Capacitor dielectrics are materials that can store and release charge, depending on the voltage applied to them.

The feed-through capacitor is also an AC-coupled capacitor, because it is a type of capacitor that passes DC signals while blocking AC signals. When a voltage is applied across the two terminals of the capacitor, the dielectric material creates an electric field between the two conductors, and this field stores electric charge. The amount of charge stored in the electric field is proportional to the capacitance of the capacitor, which is determined by the dielectric material used and the physical dimensions of the capacitor. In the case of the W3F11A2218AT1F feed-through capacitor, this capacitance is specified as 11pF +/- 20%.

The feed-through capacitor is also capable of reducing the voltage across it, which is known as voltage division. This is done by connecting two capacitors in series with the first one having a higher capacitance than the second. The voltage will be divided between the two, resulting in a reduced voltage across the second capacitor. This is useful for controlling high peak voltages or currents in a circuit and can help prevent damage to components.

The W3F11A2218AT1F feed-through capacitor is an ideal choice for a wide variety of applications that require high reliability, a small package size and extremely low parasitic inductance. It can be used for EMI/RFI suppression and filtering, ripple noise attenuation, power line harmonic filtering, signal line conditioning, suppression, etc., and is an excellent choice for high-speed, high-stress applications.

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