Single layer capacitors and circuit boards having such capacitors are provided. A circuit board can include a circuit board substrate having a mounting surface and a single layer capacitor at least partially embedded therein. The single layer capacitor includes a first conductive layer formed over at least a portion of a substrate first surface and a second conductive layer formed over at least a portion of a substrate second surface. At least one of the first or second conductive layers has a thickness that is at least about 5 microns. A method of forming a single layer capacitor includes depositing a first conductive layer over at least a portion of a substrate first surface and depositing a second conductive layer over at least a portion of a substrate second surface. At least one of the first or second conductive layers has a thickness that is at least about 5 microns.