On Tue, Feb 3, 2015 at 2:31 AM, lyonyuan <[log in to unmask]> wrote:

> DDR4 socket


Hi Lyonyuan,

It would help to know what the DDR4 Socket actually is. Since the socket is
not mating with anything else other than the memory module, there really is
no maximum gap defined. Per IPC-A-610F section 7.1.8, the defects are:

-Will not mate when used in application due to angle or misalignment.
-Component violates height requirements.
-Board lock is not fully inserted/snapped into board.
-Lead protrusion does not meet acceptance requirements.

Note: A trial mating of connector to connector or to assembly may be
required to assure the connectors meet form, fit and function requirement.

Steve

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