Ceramic capacitors are generally classified by their stability under temperature. Each dielectric material has a dielectric constant, “K”, which is an indicator of dielectric capability. Manufacturers can produce dielectrics with high “K” values, which allow them to produce higher capacitance values. However, these dielectrics are also the most unstable with respect to temperature. This means for high “K” dielectrics, peak capacitance is achieved at “room” or ambient conditions, but can drop-off significantly as temperature rises or falls. As can be seen in this chart, “NPO” or “C0G” are the most temperature stable and predictable of all dielectrics, but have the lowest dielectric constant while Y5V and Z5U are at the other end of the scale, providing high capacitance at ambient conditions but dropping off quickly. In the middle are X7R and X5R. These are used most often in the industry because they provide a balance of bulk capacitance with a moderate capacitance loss across the operating temperature range. X8L and X8R dielectrics are gaining popularity because they provide the same balance across a higher temperature range.