The light guide can be used as a FEL substitute and so arranged end to end to similar or other FEL-components. The ESD-strength is 6,5kV at a length A of 2.5mm. The ESD-strength increases per millimetre length by about 1kV. The light guide is held in place on the printed board via two press-in lugs. The light guide take place in conjunction with SMD LEDs. The light guide length A is available in the dimensions of 2.5 to 20mm.