The invention relates to a circuit board (100) having a carrier (1) which can be converted from a planar shape into a three-dimensional shape and which can be populated with components, to a method for producing an electronic
assembly (200) comprising the circuit board (100), and to an electronic device (300) comprising the electronic
assembly (200). The carrier (1) comprises three or more regions (3a, 3b, 3c, 3d). Each region (3a, 3b, 3c, 3d) is connected to at least one adjacent region (3a, 3b, 3c, 3d), in each case by means of two or more flexible connecting bridges (7) which are spaced apart from one another along a fold line (K) running between the two adjacent regions (3a, 3b, 3c, 3d). A first and a second outer region (3a, 3d) comprise mutually complementary components (19, 21) of a snap connection (23) which, by the conversion of the carrier (1) from the planar shape into the three-dimensional shape, can be connected to each other in such a way that the carrier (1) is dimensionally stable in the three-dimensional shape.