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Intel BXF80646I74770K - page 1
LGA1150 Socket Application Guide September 2013 Order No.: 328999-002 ...
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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER AND INTEL DISCLAIMS ANY EXPRES ...
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Contents Revision History.................................................................................................................. 6 1.0 Introduction................................................................................................................. 7 1.1 Related Documents....................................................... ...
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Figures 1 LGA1150 Pick and Place Cover.................................................................................... 9 2 LGA1150 Socket Land Pattern................................................................................... 10 3 Attachment to Motherboard.................................................................................. ...
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Tables 1 Related Documents ...................................................................................................7 2 Terms and Descriptions.............................................................................................. 7 3 Socket Component Mass.............................................................................. ...
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Revision History Revision Number Description Revision Date 001 • Initial release June 2013 002 • Added Desktop Intel ® Pentium processor family September 2013 LGA1150 Socket—Revision History LGA1150 Socket Application Guide September 2013 6 Order No.: 328999-002 ...
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1.0 Introduction This document covers the LGA1150 socket for Desktop systems using the Desktop 4th Generation Intel ® Core ™ processor family, Desktop Intel ® Pentium ® processor family, and for UP Server / Workstation systems using the Intel ® Xeon ® processor E3-1200 v3 product family. The information in this document include: • The ther ...
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Term Description FSC Fan Speed Control IHS Integrated Heat Spreader: a component of the processor package used to enhance the thermal performance of the package. Component thermal solutions interface with the processor at the IHS surface. ILM Independent Loading Mechanism provides the force needed to seat the LGA1150 land package onto the socket co ...
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2.0 LGA1150 Socket This chapter describes a surface mount, LGA (Land Grid Array) socket intended for the processors. The socket provides I/O, power and ground contacts. The socket contains 1150 contacts arrayed about a cavity in the center of the socket with lead-free solder balls for surface mounting on the motherboard. The contacts are arranged i ...
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Figure 2. LGA1150 Socket Land Pattern Attachment to Motherboard The socket is attached to the motherboard by 1150 solder balls. There are no additional external methods (that is, screw, extra solder, adhesive, and so on) to attach the socket. As indicated in Figure 1 on page 9, the Independent Loading Mechanism (ILM) is not present during the attac ...
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Figure 3. Attachment to Motherboard Socket Components The socket has two main components, the socket body and Pick and Place (PnP) cover, and is delivered as a single integral assembly. Refer to Socket Mechanical Drawings for detailed drawings. Socket Body Housing The housing material is thermoplastic or equivalent with UL 94 V-0 flame rating capab ...
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Intel BXF80646I74770K - page 12
• Lead free SAC (SnAgCu) 305 solder alloy with a silver (Ag) content between 3% and 4% and a melting temperature of approximately 217 °C. The alloy is compatible with immersion silver (ImAg) and Organic Solderability Protectant (OSP) motherboard surface finishes and a SAC alloy solder paste. • Solder ball diameter 0.6 mm ± 0.02 mm, before att ...
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Intel BXF80646I74770K - page 13
Figure 4. Pick and Place Cover Package Installation / Removal As indicated in Figure 5 on page 14, access is provided to facilitate manual installation and removal of the package. To assist in package orientation and alignment with the socket: • The package Pin 1 triangle and the socket Pin 1 chamfer provide visual reference for proper orientatio ...
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Intel BXF80646I74770K - page 14
Figure 5. Package Installation / Removal Features Socket Standoffs and Package Seating Plane Standoffs on the bottom of the socket base establish the minimum socket height after solder reflow and are specified in Socket Mechanical Drawings . Similarly, a seating plane on the topside of the socket establishes the minimum package height. See Package ...
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Intel BXF80646I74770K - page 15
Component Insertion Forces Any actuation must meet or exceed SEMI S8-95 Safety Guidelines for Ergonomics/ Human Factors Engineering of Semiconductor Manufacturing Equipment, example Table R2-7 (Maximum Grip Forces). The socket must be designed so that it requires no force to insert the package into the socket. Socket Size Socket information needed ...
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Intel BXF80646I74770K - page 16
3.0 Independent Loading Mechanism (ILM) 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. The mechanical design of the ILM is integral to the overall functionality of the LGA1150 socket. Intel performs detaile ...
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Intel BXF80646I74770K - page 17
The ILM assembly design ensures that, once assembled to the back plate, the only features touching the board are the shoulder screw and the insulated hinge frame assembly. The nominal gap of the load plate to the board is ~1 mm. When closed, the load plate applies two point loads onto the IHS at the “dimpled” features shown in Figure 6 on page ...
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• Desktop ILM back plate using marking “115XDBP” versus server ILM back plate using marking “115XSBP”. Note: When reworking a BGA component or the socket that the heatsink, battery, ILM and ILM back plate are removed prior to rework. The ILM back plate should also be removed when reworking through hole mounted components in a mini-wave or ...
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Figure 8. Shoulder Screw Assembly of Independent Loading Mechanism (ILM) to a Motherboard The ILM design allows a bottoms up assembly of the components to the board. See Figure 9 on page 20 for step by step assembly sequence. 1. Place the back plate in a fixture. The motherboard is aligned with the fixture. 2. Install the shoulder screw in the sing ...
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Intel BXF80646I74770K - page 20
Figure 9. Independent Loading Mechanism (ILM) Assembly As indicated in Figure 10 on page 20, the shoulder screw, socket protrusion and ILM key features prevent 180 degree rotation of ILM cover assembly with respect to socket. The result is a specific Pin 1 orientation with respect to ILM lever. Figure 10. Pin1 and Independent Loading Mechanism (ILM ...
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Intel BXF80646I74770K - page 21
Independent Loading Mechanism (ILM) Interchangeability ILM assembly and ILM back plate built from the Intel controlled drawings are intended to be interchangeable. Interchangeability is defined as an ILM from Vendor A will demonstrate acceptable manufacturability and reliability with a socket body from Vendor A, B or C. ILM assembly and ILM back pl ...
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Intel BXF80646I74770K - page 22
• The ILM cover for the LGA115x socket will have a flammability rating of V-2 per UL 60950-1. Note: The ILM Cover pop off feature is not supported if the ILM Covers are interchanged on different vendor’s ILMs. Figure 11. Independent Loading Mechanism (ILM) Cover As indicated in Figure 11 on page 22, the pick and place cover should remain instal ...
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Intel BXF80646I74770K - page 23
Figure 12. ILM Cover and PnP Cover Interference As indicated in Figure 12 on page 23, the pick and place cover cannot remain in place and used in conjunction with the ILM Cover. The ILM Cover is designed to interfere and pop off if the pick and place cover is unintentionally left in place. The ILM cover will also interfere and pop off if the ILM is ...
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4.0 LGA1150 Socket and ILM Specifications This chapter describes the following specifications and requirements: • Mechanical Specifications on page 24 • Electrical Requirements on page 25 • Environmental Requirements on page 26 Mechanical Specifications Component Mass Table 3. Socket Component Mass Component Mass Socket Body, Contacts and PnP ...
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Table 5 on page 25 provides load specifications for the LGA1150 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-be ...
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Intel BXF80646I74770K - page 26
Table 6. Electrical Requirements for LGA1150 Socket Parameter Value Comment Mated loop inductance, Loop <3.6nH The inductance calculated for two contacts, considering one forward conductor and one return conductor. These values must be satisfied at the worst-case height of the socket. Socket Average Contact Resistance (EOL) 19 mOhm The socket av ...
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Intel BXF80646I74770K - page 27
Figure 13. Flow Chart of Knowledge-Based Reliability Evaluation Methodology A detailed description of this methodology can be found at: ftp://download.intel.com/technology/itj/q32000/pdf/reliability.pdf. LGA1150 Socket and ILM Specifications—LGA1150 Socket LGA1150 Socket September 2013 Application Guide Order No.: 328999-002 27 ...
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Intel BXF80646I74770K - page 28
Appendix A Component Suppliers Note: The part numbers listed below identifies the reference components. End-users are responsible for the verification of the Intel enabled component offerings with the supplier. These vendors and devices are listed by Intel as a convenience to Intel's general customer base, but Intel does not make any represent ...
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Intel BXF80646I74770K - page 29
Appendix B Mechanical Drawings The following table lists the mechanical drawings included in this appendix. Table 9. Mechanical Drawing List Drawing Description Figure Number / Location Socket / Heatsink / ILM Keep-out Zone Primary Side (Top) Figure 14 on page 30 Socket / Heatsink / ILM Keep-out Zone Secondary Side (Bottom) Figure 15 on page 31 Soc ...
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Intel BXF80646I74770K - page 30
Figure 14. Socket/Heatsink / ILM Keep-out Zone Primary Side (Top) LGA1150 Socket—Mechanical Drawings LGA1150 Socket Application Guide September 2013 30 Order No.: 328999-002 ...
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Figure 15. Socket / Heatsink / ILM Keep-out Zone Secondary Side (Bottom) Mechanical Drawings—LGA1150 Socket LGA1150 Socket September 2013 Application Guide Order No.: 328999-002 31 ...
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Figure 16. Socket / Processor / ILM Keep-out Zone Primary Side (Top) LGA1150 Socket—Mechanical Drawings LGA1150 Socket Application Guide September 2013 32 Order No.: 328999-002 ...
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Figure 17. Socket / Processor / ILM Keep-out Zone Secondary Side (Bottom) Mechanical Drawings—LGA1150 Socket LGA1150 Socket September 2013 Application Guide Order No.: 328999-002 33 ...
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Intel BXF80646I74770K - page 34
Appendix C Heatsink Back Plate Drawings This heatsink back plate design is intended to adapt as a reference for OEMs that use threaded fasteners on customized thermal solution, to comply with the mechanical and structural requirements for the LGA115x socket. The heatsink back plate does not have to provide additional load for socket solder joint pr ...
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Intel BXF80646I74770K - page 35
Figure 18. Heatsink Back Plate Keep-in Zone Heatsink Back Plate Drawings—LGA1150 Socket LGA1150 Socket September 2013 Application Guide Order No.: 328999-002 35 ...
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Intel BXF80646I74770K - page 36
Figure 19. Heatsink Back Plate LGA1150 Socket—Heatsink Back Plate Drawings LGA1150 Socket Application Guide September 2013 36 Order No.: 328999-002 ...
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