Identifying Capacitors Symbol and Layout

What is Capacitor?

A capacitor is a passive electronic component that stores energy in the form of an electrostatic field. In its simplest form, a capacitor consists of two conducting plates separated by an insulating material called the dielectric. The capacitance is directly proportional to the surface areas of the plates, and is inversely proportional to the separation between the plates. Capacitance also depends on the dielectric constant of the substance separating the plates.

The standard unit of capacitance is the farad, abbreviated. This is a large unit; more common units are the microfarad, abbreviated µF (1 µF =10-6F) and the picofarad, abbreviated pF (1 pF = 10-12 F).

Capacitors can be fabricated onto integrated circuit (IC) chips. They are commonly used in conjunction with transistors in dynamic random access memory (DRAM). The capacitors help maintain the contents of memory. Because of their tiny physical size, these components have low capacitance. They must be recharged thousands of times per second or the DRAM will lose its data.

Large capacitors are used in the power supplies of electronic equipment o fall types, including computers and their peripherals. In these systems,the capacitors smooth out the rectified utility AC, providing pure, battery-like DC.

Identifying Capacitors Symbol and Layout

There are two types of capacitors, the Polarized and the Non-polarized. The Polarized is indicated with ''+'' positive and ''-'' negative, meaning this cannot be change into its mounting position from a certain connection of a circuit polarity, The ''+'' positive is for the voltage supply line B+ only and the '' - '' negative is for the grounding lines. The capacitor will blown up if putting it into a non desired polarity position. 

Non-polarized capacitor is a non-polar or without polarity meaning its position can be change without damaging it.

 it is stated as letter ''C'' stands for Capacitance then a mounting code and Capacitance value.

The Polarized indicated with desired maximum voltage value. like for example 

C7597 1000mF_14V , 

the ''14V'' is the desired maximum voltage for that said capacitor.

While the Non-polarized labeled without desired voltage. 

example: C2567 22pF