Terminal module and backplane connector having the terminal module

A backplane connector, comprising:

• a header defining a receiving space for receiving a mating backplane connector;
• and a plurality of terminal modules assembled to the header, each terminal module comprising:
• a plurality of conductive terminals, each conductive terminal comprising a contact portion and a connection portion electrically connected to the contact portion, the conductive terminals comprising differential signal terminals, a first ground terminal and a second ground terminal;
• the differential signal terminals being located between the first ground terminal and the second ground terminal, the differential signal terminals comprising a first signal terminal and a second signal terminal;
• and an insulating frame, the connection portions of the conductive terminals being fixed to the insulating frame, the insulating frame comprising a hollow portion to which the connection portions of the conductive terminals are partially exposed;
• wherein the contact portion of the first signal terminal comprises a first contact arm, a second contact arm opposite to the first contact arm, and a first clamping space located between the first contact arm and the second contact arm;
• and wherein the terminal module comprises an insulating block sleeved on the first contact arm of the first signal terminal and a second contact arm of the second signal terminal, and a metal shield surrounding member sleeved on the insulating block;
• and wherein the insulating block comprises a limiting groove and the metal shield surrounding member comprises a limiting protrusion protruding into the limiting groove;
• and wherein the contact portions of the conductive terminals protrude into the receiving space;
• and wherein the insulating block comprises a mating surface, a first terminal receiving hole extending through the mating surface and a second terminal receiving hole extending through the mating surface;
• wherein the first terminal receiving hole is adapted to receive the first contact arm of the first signal terminal, and the second terminal receiving hole is adapted to receive the second contact arm of the second signal terminal;
• and wherein the limiting groove extends through the mating surface.