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Thermal/Mechanical Design Guide 11

LGA1366 Socket

2 LGA1366 Socket

This chapter describes a surface mount, LGA (Land Grid Array) socket intended for

Intel® Xeon® Processor 3500 Series. The socket provides I/O, power and ground

contacts. The socket contains 1366 contacts arrayed about a cavity in the center of the

socket with lead-free solder balls for surface mounting on the motherboard.

The socket has 1366 contacts with 1.016 mm X 1.016 mm pitch (X by Y) in a

43x41 grid array with 21x17 grid depopulation in the center of the array and selective

depopulation elsewhere.

The socket must be compatible with the package (processor) and the Independent

Loading Mechanism (ILM). The design includes a back plate which is integral to having

a uniform load on the socket solder joints. Socket loading specifications are listed in

Chapter 4.

Figure 2-1. LGA1366 Socket with Pick and Place Cover Removed

socket

cavity

package socket

cavity

package

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HP Intel Xeon W3550 Especificações Página 11