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Discrete Capacitors: Different Design Types for Different Applications

Date Added: November 10, 2009 05:20:48 PM
Author:
Category: "E": Electronic Components & Equipment

Discrete capacitors are capacitor types that may be utilized in order to make electrical components work. Its difference with the usual capacitors extends to the fact that although its main goal is to store charges temporarily, its design is different. In usual designs for capacitors, there are usually two conducting surfaces that are separated by the so-called non-conductor dielectric. In discrete versions of these capacitors however, the design is not limited with the configuration of two plates.

These discrete capacitors can contain multi-parallel plates. In building one, these plates are separated by different materials for insulation. Their distinctions with regular capacitors can also be seen in other factors. First, there are insulators used in the process of building a discrete capacitor that can vitally increase the capacitance of the device. Second, the design need not be flat as curved lines are favored in order to handle signals that may disturb the device's actual operation. Read on and find out more about the most common designs used in building a design capacitor.

Discrete Capacitor Design Type # 1 – Low Loss

Low loss is one of the three basic configurations for a discrete capacitor. This is constructed in increasing the capacitance's stability. The most common dielectric materials employed in the process are glass, ceramics and mica. Since it is a low loss type, it also makes use of low loss plastic films like polypropylene and polystyrene. The most common application for this design extends to the functioning of telecommunication filters.

Discrete Capacitor Design Type # 2 – Medium Loss
Going a notch higher for the designs of discrete capacitors, you will encounter the medium loss design. These can be described as medium capacitance stabilizers. These designs are made out of various materials ranging from ceramics and plastic films to oil or wax reinforced paper. The general functions of medium loss capacitors involve AC and DC voltages. Common applications include coupling and decoupling as well as power line control and interference suppression.

Discrete Capacitor Design Type # 3 – Electrolytic

This third design for discrete capacitors involves the use of aluminum and tantalum as dielectric materials. These two materials are critical in balancing high level capacitance with that of a smaller size for the device. Between aluminum and tantalum, the latter is more favored since it produces longer service lives and higher capacitance than that of the former. The common applications for aluminum include radio and television while tantalum is employed in military operations.

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