The capacitors are an important, though passive, part of various electronic circuits. There are many types of capacitors and not everyone one of them is suitable for all types of circuits. Different circuits need different types of capacitors. To improve the functional excellence of the electronic circuit the right kind of capacitor must be installed. The Film capacitors are one of the most common types of capacitors and are also referred to as the Mylar capacitors, polyester capacitors, etc. These capacitors can be divided into two basic groups polarized and the non-polarized capacitors. The film capacitors belong to the latter category and are in high demand due to its low cost and versatility.