Market Revenue Feedthrough Capacitor Market Manufacturing Cost | Seite 2

They enable the signal to pass through but will block the RF from absconding by the device through
that hole to outer wiring.
Feedthrough capacitors are used to drill a bigger hole in the shielding case and soldering the ground
electrode directly to the shielding case (plate). Since this type of capacitor has no residual inductance
on the ground terminal side as well as on the signal terminal side, it can provide nearly ideal insertion
loss characteristics. A feed-through capacitor in which a composite dielectric layer made of a varied
material comprising a resin material and dielectric material powder is organized between a
feedthrough terminal and an outer electrode terminal surrounding, a capacitance being formed
between the feed through terminal and the outer electrode terminal.
Feedthroughs can be divided into power and instrumentation categories. Power feedthroughs are
used to transfer either high current or high voltage. Instrumentation feedthroughs are used to carry
electrical signals which are normally low current or voltage. Another special type is what is commonly
known as RF-feedthrough, specifically designed to carry very high frequency RF or microwave
electrical signals.
On the basis of type, the feedthrough capacitor market is classified into AC Feedthrough Capacitors,
DC Feedthrough Capacitors, Tubular Feedthrough Ceramic Capacitors, Solid Feedthrough Capacitors,
and Multilayered Feedthrough Capacitors.
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Feedthrough Tubular Capacitors are ideally suitable for by-pass and filtering applications. Due to the
cylindrical design, the capacitors will have uniform insertion loss over a broad frequency range. This
structure yields a low inductance when compared to conventional wound capacitors.
Solid Feedthrough Capacitors have no internal electrodes and find their primary usage in low cost
applications.
Multilayered Feedthrough Capacitors have a higher capacitance to volume ratio and are ideally suited
for greater filtering at lower frequencies. Multilayered feedthrough capacitors are also designed for