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66103A-08A
Discipline
“A” & “B”
Discipline A
– Permanent Corrective Action Plan “The socket shown in the pictures are for reference
ONLY
”
The condition of the recessed beams has been corrected by a design enhancement implemented in production. This
design enhancement increased the spring height dimension by 0.04mm and decreased the spring height tolerance by
40%. The spring height dimension is shown in the drawing below.
This design enhancement is intended to position the contact beams closer to the middle of the socket and increase the
normal force exerted on the contacts of the chips mated to the socket.
Discipline B
– Verification of Corrective Action “The socket shown in the pictures are for reference
ONLY
”
The effectiveness of this design enhancement was tested by comparing the mating and un-mating forces on the older
and newer designs. The test results for sockets with the increased spring height (newer design) showed an increase in
the mean mating force of 18.9% and an increase in the mean un-mating force of 23.4%. The increase in the un-mating
force test results between the old design and the new design indicate that a greater normal force is being exerted on the
test chip contacts by the socket contact beams. The two revisions of this contact beam design were visually examined
after the mating and un-mating force testing. Photos of the two sockets are shown below. The photo on the left shows
the older version socket prior to the enhanced contact beam design. The photo on the right shows a socket with the
design enhancement. The contacts with the older design appear to be recessed farther into the housing after un-
mating.
Material with this design enhancement will be labeled with a 2007 date code