A circuit board system

A circuit board system comprising:

• a circuit board comprising a base part and at least one changeable part, and
• at least one electrical component mounted on a surface of the changeable part,
• wherein the base part comprises an aperture for receiving the changeable part so that a perpendicular of the surface of the changeable part is parallel with a perpendicular of a surface of the base part, the aperture being shaped to allow a position of the changeable part to be changed with respect to the base part when the changeable part is in the aperture so that the perpendicular of the surface of the changeable part is parallel with the perpendicular of the surface of the base part, and edges of the aperture and edges of the changeable part being shaped to form mutually cooperative connection portions which allow the changeable part to be introduced on the aperture when the changeable part is in a first position with respect to the base part and which mechanically limit freedom of the changeable part to get away from the aperture when the changeable part is in a second position with respect to the base part, and wherein the circuit board system further comprises a locking element having connection portions shaped to constitute, together with the connection portions of the changeable part, combined connection portions for shape-locking the combination of the changeable part and the locking element with respect to the base part when the changeable part is in the second position with respect to the base part.

A method for fabricating a circuit board system, the method comprising:

• fabricating a circuit board comprising a base part and at least one changeable part so that the circuit board comprises one or more isthmuses connecting the base part and the changeable part to each other,
• mounting at least one electrical component on the changeable part, and subsequently
• breaking the one or more isthmuses so as to mechanically detach the changeable part from the base part,
• wherein the base part comprises an aperture for receiving the changeable part so that a perpendicular of the surface of the changeable part is parallel with a perpendicular of a surface of the base part, the aperture being shaped to allow a position of the changeable part to be changed with respect to the base part when the changeable part is in the aperture so that the perpendicular of the surface of the changeable part is parallel with the perpendicular of the surface of the base part, and edges of the aperture and edges of the changeable part being shaped to form mutually cooperative connection portions which allow the changeable part to be introduced on the aperture when the changeable part is in a first position with respect to the base part and which mechanically limit freedom of the changeable part to get away from the aperture when the changeable part is in a second position with respect to the base part, and
• wherein the method further comprises providing the circuit board system with a locking element having connection portions shaped to constitute, together with the connection portions of the changeable part, combined connection portions for shape-locking the combination of the changeable part and the locking element with respect to the base part when the changeable part is in the second position with respect to the base part.