The extensive use of capacitors, particularly MIM/MOM capacitors, in analog/RF designs presents a variety of PEX challenges to designers.  These designs typically require a combination of both rule-based and field-solver-based extraction to ensure designers can obtain accurate results in a timely manner. Understanding best practices (including the recommended PEX tool) for extracting the complex geometries of capacitor devices, as well as the in-context coupling effects for those devices in sensitive analog/RF blocks, enables designers to accurately apply the appropriate extraction process to different parts of the design.