4403-005LF

Feed Through Capacitors

A feed through capacitor, such as the 4403-005LF, perform two distinct functions. First, they provide galvanic isolation between two circuits, thus preventing noise and other electrical transients passing from one circuit to the other. Second, they allow DC voltage to pass between the two circuits. This capability opens the door for additional features such as AC protection, power supply filtering and high efficiency design.

A feed through capacitor typically consists of two capacitors: a protection capacitor and a bypass capacitor. The protection capacitor provides the isolated link between the two circuits, while the bypass capacitor passes the DC voltage between them. The bypass capacitor functions as a low-pass filter by allowing only low frequency signals to pass through. The protection capacitor operates as a high-pass filter, preventing high frequency noise from entering the system.

The 4403-005LF feed through capacitor is designed for a wide range of applications including data transmission, machine control and power conditioning. It features a ceramic construction for reliable performance in extreme conditions. The capacitor has two separate branches for maximum isolation, ensuring that any noise signals on one branch don’t affect the other branch. The 4403-005LF also features a maximum capacitance of 400 volts DC, meaning it can handle higher voltage applications.

The working principle of a feed through capacitor is relatively simple. When two alternating current (AC) signals meet at a common point, they create a capacitive effect, which acts as an electrical barrier. The alternating current signals are prevented from entering the other circuit, but DC voltage is allowed to pass through. The 4403-005LF is designed to provide high isolation between two circuits, while still allowing essential DC voltage to pass through.

In conclusion, the 4403-005LF feed through capacitor is designed for a variety of applications, including data transmission, machine control and power conditioning. It features two distinct functions: galvanic isolation to prevent noise and other electrical transients, and allowing DC voltage to pass between the two circuits. The 4403-005LF is designed for reliable performance in extreme conditions, with a ceramic construction and maximum capacitance of 400 volts DC.