Intel Pentium 4 Processor 478-Pin Socket (mPGA478) Design Guidelines

Intel® Pentium® 4 Processor 478-Pin Socket (mPGA478)

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3.3.3. Lock (closed) and Unlock (open) Markings

For lock an unlock positions on the socket they are to be marked with the universal symbol of the locked and

unlocked pictures. Clear indicator marks must be located on the actuation mechanism that identifies the lock

(closed) and unlock (open) positions of the cover as well as the actuation direction. These marks should still

be visible after a package is inserted into the socket.

Lock (closed) Unlock (open)

3.3.4. Lot Traceability

Each socket will be marked with a part number and lot identification code that will allow traceability of all

components, date of manufacture (year and week), and assembly location. This mark can be an ink mark or a

laser mark but must be able to pass Environmental Requirements of Section 5 – Environmental

Requirements. The mark must be placed on a surface that is visible when mounted on a printed circuit board.

In addition, this identification code must be marked on the exterior of the box in which the units ship.