Jack for data and telecommunication system

A telecommunication or data-transmission jack comprising:

• a dielectric housing forming a socket into which is insertable a plug having a plug body and plug contacts;
• a first circuit board carrying traces and fixed in the housing;
• connectors connected to the traces of the first circuit board;
• a second flexible circuit board having a U-shaped outer end and an inner end, the outer end being provided with a plurality of outwardly exposed conductive strip contacts projecting into the socket and positioned in the socket to engage the plug contacts when the plug is fully inserted into the socket, the strip contacts being connected at the inner end of the second circuit board to the traces of the first circuit board;
• a dielectric support fitting complementarily within the U-shaped outer end of the second circuit board, having respective fingers extending along and inwardly supporting the strip contacts and each formed with an outwardly projecting bump, the outer end of the second flexible circuit board having an end part projecting from the fingers past the support into the socket such that, on insertion of the jack into the socket, the body of the jack engages the end part and pivotally bends the strip contacts about the respective bumps into an inner position from an outer position, the outer position being between the inner position and an open end of the socket;
• and
• a U-shaped leaf spring fitting within the support, having fingers extending along the support fingers and bearing outwardly thereon, and braced against the housing to bias the strip contacts into the outer position.