LGA1156 Socket and ILM Electrical, Mechanical, and Environmental Specifications
36
Thermal/Mechanical Specifications and Design Guidelines
5.4
Loading Specifications
The socket will be tested against the conditions listed in
with heatsink and
the ILM attached, under the loading conditions outlined in this section.
provides load specifications for the LGA1156 socket with the ILM installed.
The maximum limits should not be exceeded during heatsink assembly, shipping
conditions, or standard use condition. Exceeding these limits during test may result in
component failure. The socket body should not be used as a mechanical reference or
load-bearing surface for thermal solutions.
Notes:
1.
These specifications apply to uniform compressive loading in a direction perpendicular to the IHS top
surface.
2.
This is the minimum and maximum static force that can be applied by the heatsink and it’s retention
solution to maintain the heatsink to IHS interface. This does not imply the Intel reference TIM is validated
to these limits.
3.
Loading limits are for the LGA1156 socket.
4.
This minimum limit defines the static compressive force required to electrically seat the processor onto the
socket contacts. The minimum load is a beginning of life load.
5.
Dynamic loading is defined as a load a 4.3 m/s [170 in/s] minimum velocity change average load
superimposed on the static load requirement.
6.
Test condition used a heatsink mass of 500gm [1.102 lb] with 50 g acceleration (table input) and an
assumed 2X Dynamic Acceleration Factor (DAF). The dynamic portion of this specification in the product
application can have flexibility in specific values. The ultimate product of mass times acceleration plus static
heatsink load should not exceed this limit.
7.
The maximum BOL value and must not be exceeded at any point in the product life.
8.
The minimum value is a beginning of life loading requirement based on load degradation over time.
9.
The maximum removal force is the flick up removal upwards thumb force (measured at 45
o
), not applicable
to SMT operation for system assembly. Only the minimum removal force is applicable to vertical removal in
SMT operation for system assembly.
10. The maximum heatsink mass includes the heatsink, screws, springs, rings and cups. This mass limit is
evaluated using the heatsink attach to the PCB.
Table 5-3.
Socket & ILM Mechanical Specifications
Parameter
Min
Max
Notes
ILM static compressive load on processor IHS
356 N [80 lbf]
600 N [135 lbf]
,
Heatsink static compressive load
0 N [0 lbf]
222 N [50 lbf]
,
Total static compressive Load
(ILM plus Heatsink)
356 N [80 lbf]
822 N [185 lbf]
,
Dynamic Compressive Load
(with heatsink installed)
N/A
712 N [160 lbf]
,
Pick & Place cover insertion force
N/A
10.2 N [2.3 lbf]
-
Pick & Place cover removal force
2.2N [0.5 lbf]
7.56 N [1.7 lbf]
Load lever actuation force
N/A
38.3 N [8.6 lbf] in the
vertical direction
10.2 N [2.3 lbf] in the
lateral direction.
-
Maximum heatsink mass
N/A
500g
Summary of Contents for BX80605X3440 - Quad Core Xeon X3440
Page 10: ...Introduction 12 Thermal Mechanical Specifications and Design Guidelines...
Page 26: ...LGA1156 Socket 28 Thermal Mechanical Specifications and Design Guidelines...
Page 78: ...Component Suppliers 78...
Page 80: ...Mechanical Drawings 80 Figure B 1 Socket Heatsink ILM Keepout Zone Primary Side for 1U Top...
Page 87: ...87 Mechanical Drawings Figure B 8 Heatsink Compression Spring...
Page 88: ...Mechanical Drawings 88 Figure B 9 Heatsink Load Cup...
Page 89: ...89 Mechanical Drawings Figure B 10 Heatsink Retaining Ring...
Page 91: ...91 Mechanical Drawings Figure B 12 Heatsink Backplate...
Page 92: ...Mechanical Drawings 92 Figure B 13 Heatsink Backplate Insulator...
Page 102: ...Socket Mechanical Drawings 104 Thermal Mechanical Specifications and Design Guidelines...
Page 106: ...Package Mechanical Drawings 108 Thermal Mechanical Specifications and Design Guidelines...
