Electrical connector with improved reliability, connector assembly, and method of making electrical connector

An electrical connector, comprising:

• a first body comprising a main body portion, a mating space located at a first end of the main body portion, and a L-shaped extension portion extending from the mating space;
• a conductive unit passing through the main body portion;
• a cable connected to the conductive unit;
• and
• a second body assembled with the first body, and the second body comprising an end wall;
• wherein the electrical connector comprises a filling cavity located between the main body portion and the end wall in a first direction, and a connection position of the cable and the conductive unit is located in the filling cavity;
• wherein the electrical connector further comprises a filling block filled in the filling cavity, and the filling block covers the connection position of the cable and the conductive unit.