RC devices, organic dielectric laminates and printed wiring boards incorporating such devices, and methods of making thereof

摘要

A capacitive/resistive device (200) provides both resistive and capacitive functions. The device comprises a first electrode (210); a dielectric (220) disposed over the first electrode; a resister element (230) formed on an adjacent to the dielectric; a conductive trace (245); and a second electrode (240) disposed over the dielectric and in electrical contact with the resistor element, wherein the dielectric is disposed between the first electrode and the second electrode and wherein said dielectric comprises an unfilled polymer of dielectric constant less than 40. The capacitive/resistive device may be embedded within a layer of a printed wiring board (2000). Embedding the capacitive/resistive device conserves board surface real estate, and reduces the number of solder connections, thereby increasing reliability.