4403-005

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Feed Through Capacitors

Feed through capacitors are essential components in numerous electrical and electronic devices. Often referred to as bypass capacitors or AC power line filters, they are used to stabilize and isolate power and protect against surges and spikes.

4403-005 Application Field and Working Principle

The 4403-005 is a feed through capacitor designed for applications that require a low ESR (Equivalent Series Resistance) and high frequency stability. It is particularly suitable for high accuracy, low-temperature coefficient and AC applications such as low-voltage power supplies, AC motors and other power control applications. It is an ideal choice for medical devices, instruments, telecommunications equipment, welding and automotive equipment.

The 4403-005 feed through capacitor uses a double-line structure with two metal rods on the top and bottom. The two metal rods serve as both a shield to protect against electromagnetic interference (EMI) and a support to prevent the capacitor from deforming and for mounting it securely. The structure also ensures the stability of the capacitor\'s capacitance over a wide temperature range and provides a low temperature coefficient for the electrical circuit.

The 4403-005 feed through capacitor works by transferring electrical energy from one point to another point through a dielectric material. This dielectric material is a non-conductive substance that provides an electrical barrier between the two points. In other words, it allows electrical charge to move from one plate or terminal to the other without allowing the charge to pass through the material itself. The transfer of charge from one terminal to another is called conduction, and this is how the capacitor functions.

When the capacitor is connected to an AC voltage source, the alternating voltage creates a changing electric field within the capacitor plates. This electric field causes the electrons in the dielectric material to move back and forth across the plates. As the electrons move, they create an electric current in the circuit which then passes through the feed through capacitor. Thus, the 4403-005 is capable of providing a steady, low-ESR current across a wide frequency range, allowing it to effectively filter the AC current.

The 4403-005 feed through capacitor has a wide range of applications, including power conditioning and control, power factor correction, EMI/RFI suppression, and AC line-filtering. This makes it an ideal choice for a wide range of AC power applications, where it can provide precise control of power flow and a high degree of reliability.

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