Printed circuit board

A printed circuit board, comprising:

• a board unit including a plurality of insulating layers and a plurality of wiring layers, and having a first cavity passing through at least a portion of the plurality of insulating layers based on a stacking direction of the plurality of wiring layers and a second cavity passing through at least another portion of the plurality of insulating layers based on the stacking direction;
• and
• a first passive device disposed in the first cavity and having at least a portion embedded in the plurality of insulating layers,
• wherein inner wall surfaces of the first and second cavities are tapered in opposite directions.

A printed circuit board, the board comprising:

• a plurality of insulating layers and a plurality of wiring layers stacked in a stacking direction;
• a first device at least partially embedded in the plurality of insulating layers;
• and
• a cavity extending from an outermost one of the plurality of insulating layers to overlap at least a portion of the first device in the stacking direction,
• wherein the first device is spaced apart from a region of the cavity between side surfaces of the outermost one of the plurality of insulating layers.