ATC's 550L ultra-broadband capacitor is manufactured with the highest quality materials to provide reliable and repeatable ultra-broadband performance from 16 kHz through 40+ GHz. With ultra-low insertion loss, flat frequency response, and excellent return loss, the 550L series is ideal for DC blocking, coupling, bypassing, and feedback applications requiring ultra-broadband performance. The 550L series meets the most stringent requirements of ultra-broadband applications.