4304-681LF

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Feed Through Capacitors, also known as RF feed-through capacitors, are an essential component in modern RF communication systems. The 4304-681LF is a type of feed-through capacitor which is used in a variety of applications ranging from radio receivers and transmitters, to cellular radio systems, to radar, to satellite communications systems. The 4304-681LF is a highly efficient RF feed-through capacitor that is primarily used for passing low frequency elements of a signal (i.e., those of 5MHz or less) through apertures in a dielectric material or through the wall of an enclosure.

The 4304-681LF feed-through capacitor application field includes, but is not limited to, the medical industry, space and satellite communications, avionics, UAVs, body worn radio, broadband radio, digital TV and radio broadcast signals. It can also be used in broadcast, land mobile, and marine markets, as well as in EMIs.

The 4304-681LF is a miniature RF feed-through capacitor that is composed of nine individual capacitors mounted in an array. Each capacitor is a single-layer ceramic disc, mounted on a stainless steel backing plate. The construction of the 4304-681LF is designed to minimize the parasitic inductance associated with low frequency RF signals, and to enable the passage of signals with frequencies as low as 5MHz through small apertures in dielectric materials or through the wall of an enclosure.

The working principle of the 4304-681LF feed-through capacitor is based on the capacitive coupling of two metal plates separated by a thin ceramic dielectric. This creates a high-impedance barrier to the RF signal, which causes the level of the signal passing through the capacitor to drop. This reduces the level of RF interference in the circuit and also reduces RF signal leakage.

The 4304-681LF is a cost-effective, high-performance feed-through capacitor that is ideal for a wide range of applications. It is a compact and lightweight device that can be easily integrated into enclosures and other radio frequency systems, making it an attractive choice for a variety of applications.

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