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Memory metal in socket Disclosure Number: IPCOM000236448D
Publication Date: 2014-Apr-25
Document File: 2 page(s) / 101K

Publishing Venue

The Prior Art Database


Disclosed is a method to utilize memory metal to disengage a server chip when an over temperature situation is reached.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 86% of the total text.

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Memory metal in socket

Certain chips in servers are removable and re-programmable. The problem is that these chips are not keyed and incorrect insertion can lead to an over current situation. This causes the chip to heat because the input and ground pins are reversed. Currently, the system can continue to operate in this situation so a user may not notice the chip is unreasonably heated. This can cause the chip to be permanently damaged. If a user has to replace the chip, it may be unacceptably hot for human touch.

Figure 1: Socket opened

Figure 2: Socket closed

The novel idea is to utilize memory metal to disengage the chip if an over temperature situation is reached. This prevents the chip from overheating, as well as provides a visual indicator of the problem. An additional advantage is that this is a mechanical solution, which does not rely on software to implement.

Memory metal technology is well known. Many variations of the materials can be specified, each having a unique transition temperature. This transition can take place over a small window of temperature (typically about 15 degrees Celsius).

A couple of different methods enable the use of this material to disconnect an Integrated Circuit (IC).

Method #1: The landing pads on the socket can have this material integrated such that


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upon overheating, the pad loses contact with the pins of the chip (shown below). Method #2: An additional strip can be added to the chip to induce a force to u...