Electrical connector having positive and negative contacts with structures offset from each other

An electrical connector comprising:

• an insulative housing including a main portion with a mating port extending forwardly from the main portion, a mounting port below the main portion;
• the mating port including a plurality of mating cavities spaced from one another in a vertical direction;
• plural pairs of contacts retained in the housing, each pair of contacts having a first contact blade and a second contact blade spaced from each other, each of the first contact blade and the second contact blade including a main body, a contacting section forwardly extending from the main body into the corresponding mating cavity;
• wherein
• in each pair of contacts, the contacting section of the first contact blade and that of the second contact blade extend into the same mating cavity, and at least one of said first contact blade and the second contact blade includes at least one embossment extending toward to abut against the second contact blade in said vertical direction for electrical connection therebetween;
• wherein
• some pairs of contacts performing negative connection while others thereof performing positive connection, and a contact point of the contacting section performing negative connection is located in front of the contact point of the connecting section performing positive connection;
• wherein the main body of each of first contact blade and the second contact blade forms a shoulder behind corresponding barbed structures, and the shoulder of the main body of the contact performing the negative connection is located in front of that of the contact performing the positive connection.

An electrical connector comprising:

• an insulative housing including a main portion with a mating port extending forwardly from the main portion, a mounting port below the main portion;
• the mating port including a plurality of mating cavities spaced from one another in a vertical direction;
• plural pairs of contacts retained in the housing, each pair of contacts having a first contact blade and a second contact blade spaced from each other, each of the first contact blade and the second contact blade including a main body, a contacting section forwardly extending from the main body into the corresponding mating cavity;
• wherein
• the main body includes a horizontal part from which the contacting section forwardly extends, and a vertical part from which at least one mounting leg extends downwardly into the mounting port;
• further including a spacer attached to the mounting port, wherein said spacer including a plurality of positioning holes to retain the corresponding mounting legs, and a plurality of heat dissipation holes which are larger than the positioning holes;
• wherein the main portion of the insulative housing includes a top wall with a plurality of heat dissipation holes to cooperate with the heat dissipation holes in the spacer to enhance airflow moving in the vertical direction.