Multilayer High Q Capacitors Johanson Technology Multilayer High-Q Capacitors were designed for high Q and microwave applications. The S Series High-Q capacitors offer ultra-high Q performance and NPO temperature characteristics. The L Series High-Q capacitors offer mid-high Q performance and NPO temperature characteristics. The Johanson Technology multilayer High Q Capacitors series have a capacitance range from 0.1pF to 10,000pF.