Capacitors Tech Notes   Film Capacitors - What Are They, And How Are They Made. First, let's define a capacitor: It is an electromechanical device capable of storing electrical energy (electrons). It differs from a battery, as a battery PRODUCES electrical energy as a by-product of chemical activity...[more]   Pitfalls In Specifying Replaycement Capacitors There are very few standards in the capacitor industry, other than in true MIL parts, and interchangeability can be a problem. This is one reason why we catalog and stock many items in 2 or 3 packaging configurations. . . tall & thin; medium base & height; short & fat. [more]   About Plastic Capacitors Inc. Incorporated in the State of Illinois under a Charter issued July 11, 1952, Plastic Capacitors, Inc., has remained a privately held corporation. Its history has included a steady record of expansion, research and product reliability. [more]   Limited Warranty Plastic Capacitors, Inc. warrants its products under normal usage and service, against defects in workmanship or materials, for a period of ONE (1) YEAR from the date of delivery. [more]