Following this decision tree, the engineer starts with the application temperature, which is quite simple to choose as there are only two ranges to choose from. Following the higher range of -55 to 125°C, the next item to consider is the capacitance stability or change rate. For a very stable capacitance, users will want to select the NPO option. In contrast, the X7R will be a viable option for those who are unconcerned with capacitance stability.