GB1301121A - Carrier for semiconductor devices - Google Patents

Abstract

1301121 Semi-conductor devices BARNES CORP 27 April 1970 20137/70 Heading H1K [Also in Division H2] Figs. 1, 4 and 6 show perspective, underside, and side-sectional views respectively of one embodiment of an indexed carrier 12 for carrying any encapsulated semi-conductor device 86 of the external form shown, the base section of the carrier being a type commonly used with flat-pack integrated circuits. Here, the carrier is provided with a stand-off post 42 around which are disposed holes extending through the base of the carrier to receive the leads of the device. The upper ends of the holes are provided with guiding flares defined by walls 38 extending radially from the post 42 to meet an annular wall 40. The form of the flares is varied between embodiments by suitably shaping the faces of both radial and annular walls. In a variant the upper edge of the radial walls 38 rises from the top edge of the annular wall to a higher point on the post 42 to further ease the insertion of the device into the carrier. An outer annular wall (not shown) concentric with the annular wall 40 may be of a height sufficient to encircle the base of the device encapsulation and to thus shield the leads 88 from accidental contact with external objects. The device is retained in the carrier by providing one or more (e.g. alternate ones) of the holes with a portion 34 of a reduced cross-section comparable to or slightly less in diameter than the undistorted lead to provide frictional engagement. The pillar 42 is continued at the underside of the carrier in a portion of constant and larger cross-section and the holes are flared away from the pillar to form guided entries for the flexible conductors 82 of a contactor assembly 54 on which the carrier may be retained by spring biased latches 64, 66. The conductors 82 are retained in the generally circular bore of the contactor body by solid 74 and apertured parts 76 with projecting parts 86 engaging axial grooves 80 of semicircular crosssection in the walls of the bore 78 to lock the contact assembly against rotation. Further bores 90, 92 are provided in the contactor body to enable it to be secured to a suitable mounting.