Thermal/Mechanical Design Guide
19
Independent Loading Mechanism (ILM)
3
Independent Loading
Mechanism (ILM)
The Independent Loading Mechanism (ILM) provides the force needed to seat the
1366-LGA land package onto the socket contacts. The ILM is physically separate from
the socket body. The assembly of the ILM to the board is expected to occur after wave
solder. The exact assembly location is dependent on manufacturing preference and test
flow.
Note:
The ILM has two critical functions: deliver the force to seat the processor onto the
socket contacts and distribute the resulting compressive load evenly through the socket
solder joints.
Note:
The mechanical design of the ILM is integral to the overall functionality of the LGA1366
socket. Intel performs detailed studies on integration of processor package, socket and
ILM as a system. These studies directly impact the design of the ILM. The Intel
reference ILM will be “build to print” from Intel controlled drawings. Intel recommends
using the Intel Reference ILM. Custom non-Intel ILM designs do not benefit from Intel's
detailed studies and may not incorporate critical design parameters.
3.1
Design Concept
The ILM consists of two assemblies that will be procured as a set from the enabled
vendors. These two components are ILM cover assembly and back plate.
3.1.1
ILM Cover Assembly Design Overview
The ILM Cover assembly consists of four major pieces: load lever, load plate, frame and
the captive fasteners.
The load lever and load plate are stainless steel. The frame and fasteners are high
carbon steel with appropriate plating. The fasteners are fabricated from a high carbon
steel. The frame provides the hinge locations for the load lever and load plate.
The cover assembly design ensures that once assembled to the back plate and the load
lever is closed, the only features touching the board are the captive fasteners. The
nominal gap of the frame to the board is ~1 mm when the load plate is closed on the
empty socket or when closed on the processor package.
When closed, the load plate applies two point loads onto the IHS at the “dimpled”
features shown in
Figure 3-1
. The reaction force from closing the load plate is
transmitted to the frame and through the captive fasteners to the back plate. Some of
the load is passed through the socket body to the board inducing a slight compression
on the solder joints.
Содержание BX80616I3540
Страница 1: ...Document Number 321461 001 Intel Xeon Processor 3500 Series Thermal Mechanical Design Guide March 2009...
Страница 10: ...Introduction 10 Thermal Mechanical Design Guide...
Страница 38: ...Sensor Based Thermal Specification Design Guidance 38 Thermal Mechanical Design Guide...
Страница 50: ...Component Suppliers 50 Thermal Mechanical Design Guide...
Страница 56: ...Mechanical Drawings 56 Thermal Mechanical Design Guide Figure B 5 Reference Design Heatsink Assembly 1 of 2...
Страница 57: ...Thermal Mechanical Design Guide 57 Mechanical Drawings Figure B 6 Reference Design Heatsink Assembly 2 of 2...
Страница 58: ...Mechanical Drawings 58 Thermal Mechanical Design Guide Figure B 7 Reference Fastener Sheet 1 of 4...
Страница 59: ...Thermal Mechanical Design Guide 59 Mechanical Drawings Figure B 8 Reference Fastener Sheet 2 of 4...
Страница 60: ...Mechanical Drawings 60 Thermal Mechanical Design Guide Figure B 9 Reference Fastener Sheet 3 of 4...
Страница 61: ...Thermal Mechanical Design Guide 61 Mechanical Drawings Figure B 10 Reference Fastener Sheet 4 of 4...
Страница 64: ...Mechanical Drawings 64 Thermal Mechanical Design Guide...
Страница 66: ...Socket Mechanical Drawings 66 Thermal Mechanical Design Guide Figure C 1 Socket Mechanical Drawing Sheet 1 of 4...
Страница 67: ...Thermal Mechanical Design Guide 67 Socket Mechanical Drawings Figure C 2 Socket Mechanical Drawing Sheet 2 of 4...
Страница 68: ...Socket Mechanical Drawings 68 Thermal Mechanical Design Guide Figure C 3 Socket Mechanical Drawing Sheet 3 of 4...
Страница 69: ...Thermal Mechanical Design Guide 69 Socket Mechanical Drawings Figure C 4 Socket Mechanical Drawing Sheet 4 of 4...
Страница 70: ...Socket Mechanical Drawings 70 Thermal Mechanical Design Guide...
Страница 72: ...Processor Installation Tool 72 Thermal Mechanical Design Guide Figure D 1 Processor Installation Tool...
