Shielded electrical connector with ground pins embeded in contact wafers

An electrical connector assembly comprising:

• a connector housing defining a front face and two vertical stacked mating slots;
• and
• a plurality of terminal wafers arranged alongside with each other in the connector housing, each terminal wafer comprising an upper pair of terminals and a lower pair of terminals in a same vertical plane thereof, the upper pairs and the lower pairs of the terminals of the plurality of terminal wafer comprising contacting portions exposing to the mating slots respectively which have a vertical mating direction;
• wherein each terminal wafer further comprises a ground contact between said upper pair and lower pair of the terminals in the vertical plane, the ground terminal comprising a contacting portion which has a transverse mating direction perpendicular to the vertical mating direction.

An electrical connector assembly comprising:

• a first connector defining a first insulative housing having a front mating slot portion and a rear wafer receiving portion in a front-to-back direction, a slot defined in the front mating slot extending along a transverse direction perpendicular to the front-to-back direction and communicating with an exterior in the front-to-back direction;
• and
• a plurality of wafers stacked upon one another in the transverse direction, each of said wafer extending in a vertical plane defined by the front-to-back direction and a vertical direction perpendicular to both said front-to-back direction and said transverse direction, each of said wafers including a pair of differential pair contacts and a grounding contact spaced from each other while both being embedded within an insulator via an insert molding process;
• wherein
• the insulator defining a forward protrusion extends into the front mating slot portion so as to cooperate with an inner face of the front mating slot portion to sandwich the pair of differential pair contacts therebetween.