| 摘要 |
<p>PURPOSE:To obstruct defective insertion simply and positively, and to prevent defective measurement, defective selection, the breaking of a circuit, etc. due to defective insertion by asymmetrically forming the external form of the flat package. CONSTITUTION:A flat package proper 1 takes plane shape or a square, pins 2 are projected in all directions, and one side at the back side is chamferred in the oblique direction at the lower side of the pin 2 as shown in 1A. Accordingly, the external form of the flat package is asymmetrically shaped in the vertical (thickness) direction and the left and right direction. When the flat package proper 1 is accurately inserted into the package inserting concave sections 4 of sockets 3, the chamfering sections 1A of the package and the chamfering sections 4A of the sockets 3 are contacted, the package is precisely set into the package inserting concave sections 4, and the pins 2 are positioned at predetermined measuring locations.</p> |
