Lamp base with a cutout and lamp with corresponding lamp base

The invention relates to a lamp base with a plastic base part which has electrical connections for the power supply of at least one lighting device of the lamp, the lighting device being enclosed by a lamp vessel and the electrical connections being configured by metal pins. The first ends of these pins project laterally, perpendicular to the longitudinal extension of the lamp base, from the plastic base part in order to establish electrical contact with the lamp socket, and the second ends are adapted to connect a power supply wire for the at least one lighting device which wire is to the outside of the lamp vessel. The invention is characterized in that the plastic base part has a recess on a lower face of the plastic base part facing away from the lamp vessel, the two ends of the metal pins being disposed in the recess.