| 摘要 |
<p>PROBLEM TO BE SOLVED: To equalize conductor length between terminal parts and contact parts of upper and bottom contacts, and also to eliminate high-speed signal skew without changing total outline dimension or a fitting form with a sub board. SOLUTION: Each of a plurality of bottom contacts 120 has such a structure that a retained part 124 is extended between the retained part 124 and a contact part 121 and folded back halfway, and which a length matching part 125 that leads to the contact part 121 is installed, and which the conductor length between its terminal part and its contact part is equalized with that of the upper contact 110. An insulator 130 is given a constitution that in the part between its upper and middle stages each of plural grooves 135 for bottom contact retention is extended from the side face and on them has a height prescribed beforehand, and also which forms a housing room 138 for the length matching part with a depth size prescribed beforehand and in it houses each of the length matching part 125 of the plural bottom contacts 120, and also which the retained part 124 is retained and fixed in the grooves 135 for bottom contact retention.</p> |
