4300-021

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Feed Through Capacitors:

Feed through capacitors are used to suppress and attenuate both high frequency and radio frequency (RF) interference, as well as to provide protection from lightning strikes. Feed through capacitors are essentially power line filters which work by providing a low-impedance pathway for high frequency currents and thereby preventing them from reaching and interfering with sensitive loads. Feed through capacitors can be found in industrial, broadcast and consumer electronics, as well as electric and telecommunications equipment.

In general, there are two types of feed through capacitors – those that pass current and those that block current. The 4300-021 feed through capacitor is a type of current-passing feed-through capacitor, which means it functions by passing RF and high frequency interference safely through to ground while blocking out any noise that is generated within the system. This capacitor does not filter or block low frequency noise, so it is not effective at suppressing and attenuating those signals.

The working principle of the 4300-021 feed through capacitor is relatively simple. The capacitor is connected in parallel to a grounded conductor. This grounding conductor is tuned to the resonant frequency of the capacitor, which keeps the capacitor from passing low frequency signals while allowing it to pass high frequency signals. When high frequency signals attempt to pass through the capacitor, they are absorbed by the capacitor and the current of the signal is dissipated due to the parasitic capacitance it has. This dissipated current is then converted to heat, which is safely dissipated to ground.

The overall amount of attenuation provided by the 4300-021 feed through capacitor depends on the impedance of the device, the load impedance and the operating frequency. In general, the higher the operating frequency, the higher the amount of attenuation provided by the capacitor. The device is also designed to withstand harsh environmental conditions, such as temperature extremes, and still provide consistent performance.

In summary, the 4300-021 feed through capacitor is an effective device for suppressing and attenuating both high frequency and radio frequency interference. The capacitor passes RF and high frequency interference while blocking any noise that is generated within the system. It is designed to withstand a wide range of operating conditions and frequencies, and provides reliable performance.

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