circuit board 48 rests on a conductor 50 of the lead frame the circuit board 48 and the conductor 50 have congruent holes into which an insertion section 22 of the connection contact 40 has been inserted because of its clamping effect the insertion section 22 holds the conductor 50 on the circuit board 48 connecting both mechanically in order to establish an electrically conductive connection the hole in the circuit board 48 is located in a not visible conductor track of the circuit board 48 and the hole wall is preferably tin coated in order to ensure the establishment of an electrical contact two or more circuit boards 48 or conductors 50 of lead frames can be connected in the same manner as can be seen from fig7 the outer edges of the central spring limbs 28 are located on the circumference of a larger theoretical circle 52 than the outer edges of the outer spring limbs 26 accordingly the central spring limbs 28 opposing each other have a different larger distance from a theoretical longitudinal centerline 54 of the insertion section 22 than the outer spring limbs 26 located in between that also oppose each other the reason for that.