An endoscopic device includes a flexible PCB adapted to fold to form a stacked structure with a plurality of spaced layers. The PCB comprises a plurality of units, at least one interconnection interconnecting any two adjacent units, and a plurality of connections connecting to a conductor. Advantageously, the connections can reduce space for mounting electronic devices on the units. Each of the connections has a first section extending from the connected unit, and a second section extending from the first section with a passive electronic component being disposed thereon. Further, a conductor extends from the second section of the connection.