Connector with differently arranged contact mounting portions and connector assembly have two such connectors belly-to-belly mounted to a circuit board

An electrical connector system comprising:

• a printed circuit board defining opposite first and second surfaces thereon in a vertical direction, and first and second rows of tail receiving holes therein wherein each of said first and second rows extends along a transverse direction perpendicular to said vertical direction;
• a first connector and a second connector mounted upon said first and second surfaces, respectively, and arranged in essentially a mirror image manner with each other in said vertical direction;
• the first connector including a plurality of first through hole contacts with first contacting sections extending into a first mating port of the first connector, and with first tails received in the first row of tail receiving holes, respectively;
• the second connector including a plurality of second through contacts with second contacting sections extending into a second mating port of the second connector, and with second tails received in the second rows of tail receiving holes, respectively;
• wherein
• the first contacting sections and the second contacting sections are arranged in the minor image manner with each other with regard to the printed circuit board for respective confrontation with first and second modules respectively received in the corresponding first and second mating ports in the mirror image manner with each other while said first tails and said second tails are arranged spaced from, aligned and overlapped with each other in a front-to-back direction perpendicular to both said vertical direction and said transverse direction, wherein the first connector further includes a plurality first surface mount contacts and the second connector further includes a plurality of second surface mount contacts, said first surface mount contacts and said second surface mount contacts being arranged in the mirror image manner with each other, wherein both the first through hole contacts and the first surface mount contacts are arranged in pairs each integrated by an insulator as a wafer.

An electrical connector assembly comprising:

• a first connector including an upper row of first contacts, a lower row of first contacts and a front row of first contacts space from one another and each of said rows in said first connector extending in a transverse direction, the lower row of first contacts upwardly opposite to the upper row of first contacts in a vertical direction perpendicular to said transverse direction, and the front row of first contacts rearwardly opposite to the lower row of first contacts in a front-to-back direction perpendicular to both the transverse direction and the vertical direction, the upper row of first contacts and the front row of first contacts being of a surface mount type while the lower row of first contacts being a through hole type;
• and
• a second connector configured and dimension similar to the first connector while in an upside down manner in said vertical direction, said second connector including an upper row of second contacts, a lower row of second contacts and a front row of second contacts spaced from one another and each of said rows in said second connector extending in the transverse direction, the lower row of second contacts upwardly opposite to the upper row of second contacts in said vertical direction, and the front row of second contacts rearwardly opposite to the lower row of second contacts in said front-to-back direction, the upper row of second contacts and the front row of second contacts being of a surface mount type;
• wherein
• tails of the upper row of first contacts and those of the front row of first contacts are aligned with the corresponding tails of the upper row of the second contacts and those of the front row of second contacts in the vertical direction, respectively, while tails of the lower row of first contacts are offset from and overlapped with those of the lower row of second contacts in the front-to-back direction, wherein opposing lower, upper, and front first contacts being integrated by an insulator as a wafer.