Host connector and receptacle assembly including same

A host connector comprising:

• a connector insulator including a slot into which a connection end of a module is detachably inserted;
• a first contact terminal group formed from a plurality of contact terminals placed inside the connector insulator and each brought into contact with a contact pad on one side of the connection end of the module;
• and
• a second contact terminal group formed from a plurality of contact terminals each brought into contact with a contact pad on another side opposed to the contact pad on the one side of the connection end, wherein
• the first contact terminal group comprises
• a plurality of grounding sub-contact terminals,
• grounding main contact terminals for supporting ends of the grounding sub-contact terminals, respectively, and
• a plurality of signal contact terminals having a shape identical to a shape of the grounding main contact terminals,
• a contact portion of each grounding main contact terminal and a contact portion of each signal contact terminal are arranged on a common straight line extending along a direction of arrangement of the contact terminals,
• the plurality of signal contact terminals are disposed between the grounding main contact terminals, and
• a center-to-center distance between a contact portion of the grounding sub-contact terminal and the contact portion of the grounding main contact terminal to be brought into contact with different locations on a same contact pad of a module is set in a predetermined range.

A host connector comprising:

• a connector insulator including a slot into which a connection end of a module is detachably inserted;
• a first contact terminal group formed from a plurality of contact terminals arranged inside the connector insulator and each brought into contact with a contact pad on one side at the connection end of the module;
• and
• a second contact terminal group formed from a plurality of contact terminals each brought into contact with a contact pad on another side opposed to the contact pad on the one side at the connection end, wherein
• the first contact terminal group includes
• a plurality of grounding sub-contact terminals,
• grounding main contact terminals configured to support ends of the grounding sub-contact terminals, respectively, and
• a plurality of signal contact terminals having a shape identical to a shape of the grounding main contact terminals,
• a contact portion of each grounding main contact terminal and a contact portion of each signal contact terminal are arranged on a common straight line extending along a direction of arrangement of the contact terminals,
• the plurality of signal contact terminals are disposed between the grounding main contact terminals,
• a position of a contact portion of each grounding sub-contact terminal is set to a position closer to the slot of the connector insulator than is a position of the contact portion of each grounding main contact terminal, and
• a center-to-center distance between the contact portion of the grounding sub-contact terminal and the contact portion of the grounding main contact terminal to be brought into contact with a same contact pad of a module is set in a range from 1.1 mm to 1.5 mm inclusive.