Telecommunications device

A telecommunication jack comprising:

• a housing defining a port for receiving a plug;
• a plurality of contact springs adapted to make electrical contact with the plug when the plug is inserted into the port of the housing;
• a plurality of wire termination contacts for terminating wires to the jack, the wire termination contacts being electrically connected to the contact springs;
• a circuit board to which at least the contact springs are mounted, the circuit board including:
• a first conductive layer, a second conductive layer and a third conductive layer, the first conductive layer being an outermost conductive layer of the circuit board, the third conductive layer being adjacent a second major side of the circuit board opposite from the first major side of the circuit board, and the second conductive layer being an intermediate conductive layer positioned between the first and third conductive layers;
• a first dielectric layer positioned directly between the first conductive layer and the second conductive layer, the first dielectric layer having a first thickness which provides a spacing between the first conductive layer and the second conductive layer that is less than 0.01 inches;
• a second dielectric layer positioned between the second conductive layer and the third conductive layer, the second dielectric layer having a second thickness that is at least 2.5 times thicker than the first thickness;
• and
• the first conductive layer and the second conductive layer each including at least one capacitive plate, wherein the capacitive plate of the first conductive layer opposes the capacitive plate of the second conductive layer to provide a capacitive coupling between the first conductive layer and the second conductive layer to compensate for crosstalk.