To function reliably over their entire service life, FTCAP’s film capacitors is encapsulated are vacuum with an epoxy. Photo courtesy Scheugenpflug. During the “schoopage” process, the film ends of the coil protruding at the sides are electrically contacted by means of spray metallization. Tin, zinc and aluminum are used as contact materials.
The most basic structure used by capacitors to store electrical charge consists of a pair of electrodes separated by a dielectric, as is shown in Fig. 1 below. One of the indicators used to express the performance of a capacitor is how much electrical charge it can store.
A simple capacitor consists of a dielectric between two conductive materials. One way of having high capacitance in a small volume is to increase the dielectric-electrodes surface area in a given volume, which is done using different types of constructions, as listed in Table 1.
For capacitors, typically high leakage or short condition results from either dielectric compromise or bridging across the positive and negative terminals, what causes this and how it occurs varies for the different CAPS.
The topic dealt with in this part describes the structure of multilayer ceramic capacitors and the processes involved in the production of these capacitors. The most basic structure used by capacitors to store electrical charge consists of a pair of electrodes separated by a dielectric, as is shown in Fig. 1 below.
One of the indicators used to express the performance of a capacitor is how much electrical charge it can store. And in the case of a multilayer ceramic capacitor, by repeating the same structure shown in Fig. 1 level after level, the amount of charge it can store is increased.