PURPOSE: To exactly insert an IC package into a socket and to remarkably improve the built-in rate by providing a suction pad for suspending and holding the IC package in the center of the lower part.
CONSTITUTION: A suction pipe 223 of a vacuum chuck is installed internally so as to pass through the center of a head body 221 in the vertical direction, the lower end of its suction pipe 223 faces a hollow part surrounded by a leg 222 and an suction pad 224 is provided. In this state, the suction pipe 223 is brought to down-motion to a first down-motion position against a socket in which a spring electrode 62 becomes a grip release position, and thereafter, by releasing a suction of the suction pad 224, an IC package 70 is dropped into its recessed part 61. In such a way, many IC packages 70 are inserted into a prescribed position on a base 63 of the recessed part 61.
NIHEI TAKAHIRO
KUROSU OSAMU
TOSOH CORP
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