Printed circuit board comprising a plurality of electronic components (2, 2', 2", 2"', 2"") arranged on the printed circuit board in at least one group (G1, G2, G3), wherein the electronic components (2, 2', 2", 2"', 2"") each have a first and a second electrical component contact surface (3', 3") facing the circuit board, the component contact surfaces (3', 3") being connected to corresponding circuit board contact surfaces (6, 7, 8) arranged on the circuit board, wherein successive electronic components (2, 2', 2", 2"', 2"") form a line by series connection, said line extending in an undulating manner, the electronic components (2, 2', 2", 2"', 2"") of the line being arranged according to a matrix with at least two rows (Z1, Z2, Z3) and at least two columns (S1,..., S6) at the printed circuit board and the strand running alternately up and down along columns (S1,..., S6) arranged next to each other, and - the electronic components (2, 2"") of each even-numbered column (S2, S4) of the uppermost row forming a horizontal component pair with the electronic component of a subsequent column (S3, S5) of the uppermost row, and the electronic components (2") of each odd-numbered column (S1, S3, S5) of the lowermost row (Z2, Z3) forming a horizontal component pair with the electronic component (2"') of the lowermost row (Z2, Z3) of a subsequent column (S2, S4, S6), or - the electronic components of each odd-numbered column (S1, S3, S5) of the uppermost row forming a horizontal component pair with the electronic component of a subsequent column (S2, S4, S6) of the uppermost row, and the electronic components of each even-numbered column (S2, S4) of the lowermost row (Z2, Z3) forming a horizontal component pair with the electronic component of the lowermost row (Z2, Z3) of a subsequent column (S3, S5), where each horizontal component pair is connected by means of a common horizontal PCB contact surface assigned to the horizontal component pair, wherein to each common PCB contact surface (6, 7, 8) a conductor track is assigned, the common PCB contact surfaces (6, 7, 8) being widened as compared to the conductor track and being at least 1 mm wide, and wherein the common PCB contact surfaces (6, 7, 8) have an area of at least 2mm 2, preferably at least 4mm 2, more preferably at least 10mm 2, wherein the conductor tracks are led out between horizontal PCB contact surfaces located opposite each other within the same row, wherein the conductor tracks are led out towards exactly one side of the printed circuit board, wherein the conductor tracks are led out in front of only every second column, wherein at least two groups (G1, G2) are provided, wherein groups (G1, G2) are - either arranged rotated by 180° to each other and the conductor tracks are led out between the horizontal PCB contact surfaces of the row which is furthest away from the opposite group (G1, G2), - or the groups are arranged rotated by 90° to each other. - the electronic components (2, 2"") of each even-numbered column (S2, S4) of the uppermost row forming a horizontal component pair with the electronic component of a subsequent column (S3, S5) of the uppermost row, and the electronic components (2") of each odd-numbered column (S1, S3, S5) of the lowermost row (Z2, Z3) forming a horizontal component pair with the electronic component (2"') of the lowermost row (Z2, Z3) of a subsequent column (S2, S4, S6), or - the electronic components of each odd-numbered column (S1, S3, S5) of the uppermost row forming a horizontal component pair with the electronic component of a subsequent column (S2, S4, S6) of the uppermost row, and the electronic components of each even-numbered column (S2, S4) of the lowermost row (Z2, Z3) forming a horizontal component pair with the electronic component of the lowermost row (Z2, Z3) of a subsequent column (S3, S5), - either arranged rotated by 180° to each other and the conductor tracks are led out between the horizontal PCB contact surfaces of the row which is furthest away from the opposite group (G1, G2), - or the groups are arranged rotated by 90° to each other.