Editorial Technical Reference

Computer Server CPU Socket Assembly

This page explains how Computer Server CPU Socket Assembly is classified within Manufacture of Computers and Peripheral Equipment. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Precision mechanical-electrical interface connecting CPU to motherboard in servers

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Product Specifications

Technical details and manufacturing context for Computer Server CPU Socket Assembly

Definition
This product is a high-precision component assembly that provides both mechanical mounting and electrical connectivity between a server-grade central processing unit (CPU) and the motherboard. It consists of a socket housing, contact pins, retention mechanism, and thermal interface components. The assembly ensures reliable signal transmission while maintaining proper thermal management and mechanical stability under server operating conditions. It is critical for data center infrastructure and enterprise computing systems requiring high reliability and performance.

The socket housing is typically molded from high-temperature liquid crystal polymer (LCP) with UL 94 V-0 flammability rating. Contacts are made of phosphor bronze alloy or nickel-plated copper, offering good conductivity and corrosion resistance. The thermal interface material (TIM) facilitates heat transfer from the CPU to a cooling solution.

Key parameters include a pin count of 2011, contact resistance of ≤30 mΩ (per IEC 60512-2), operating temperature range of -40 to 85 °C, insertion force of ≤450 N, socket height of 7.3 ±0.1 mm, current rating of 1.5 A per power pin, dielectric withstanding voltage of 500 V AC (per IEC 60512-4), insulation resistance of ≥1000 MΩ at 500 V DC (per IEC 60512-3), durability of ≥500 insertion/withdrawal cycles, operating humidity of 10–90% RH (non-condensing), and weight of ≤50 g.

This assembly is designed for use in servers and enterprise computing systems. It is not a standalone product but a component that must be integrated with a compatible CPU and motherboard. The listed parameters are reference values; actual model-specific values and standards must be verified with the legal manufacturer or supplier before procurement or use. The assembly does not include the CPU or motherboard, and its performance depends on proper installation and thermal management.
Working Principle
The socket housing aligns the CPU pins with corresponding contact points. Spring-loaded contacts establish electrical connections, ensuring signal integrity. The retention mechanism secures the CPU with appropriate mounting pressure, preventing dislodgement. Thermal interface materials fill gaps between the CPU and heat sink, facilitating heat transfer. The design accommodates thermal expansion and mechanical stress during operation.
Common Materials
Phosphor Bronze Alloy, High-Temperature Liquid Crystal Polymer (LCP), Nickel-Plated Copper, Thermal Interface Material (TIM)
Technical Parameters
ParameterTypical rangeNotes & selection driver
Pin CountRequired2011 pinsTotal number of electrical contact pins
Contact ResistanceRequired≤30 mΩMaximum electrical resistance per contactIEC 60512-2
Operating TemperatureRequired-40–85 °CTemperature range for reliable operation
Insertion ForceRequired≤450 NForce required to insert CPU into socket
Socket HeightRequired7.3 ±0.1 mmOverall height including retention mechanism
Current Rating1.5 AMaximum current per power pin
Dielectric Withstanding Voltage500 V ACBetween adjacent contactsIEC 60512-4
Insulation Resistance≥1000 MΩAt 500 V DCIEC 60512-3
Durability≥500 cyclesInsertion/withdrawal cycles
Operating Humidity10–90 % RHNon-condensing
MaterialLCPHousing; contacts: copper alloyUL 94 V-0
Weight≤50 gSocket assembly only

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Socket Housing Part
    Provides structural support and alignment for CPU
    Material: High-Temperature Liquid Crystal Polymer (LCP)
  • Contact Pins Part
    Establish electrical connections between CPU and motherboard
    Material: Phosphor Bronze Alloy with Gold Plating
  • Retention Mechanism Part
    Secures CPU with appropriate mounting pressure
    Material: Nickel-Plated Steel
  • Thermal Interface Pad Optional Part
    Facilitates heat transfer from CPU to cooling solution
    Material: Thermal Interface Material (TIM)
  • Socket Cover Optional Part
    Protects contacts during shipping and handling
    Material: ABS Plastic

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Computer Server CPU Socket Assembly.

Server Processor Socket CPU Socket Assembly Processor Interface Module

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Max 50N per pin insertion force, 10N retention force
other spec: 5000 mating cycles minimum, 0.5mm contact wipe distance, 10^9 Ω insulation resistance
temperature: -40°C to 125°C (operating), -55°C to 150°C (storage)
Media Compatibility
✓ LGA (Land Grid Array) CPUs ✓ Server-grade thermal interface materials ✓ FR-4 or high-Tg PCB materials
Unsuitable: High-vibration industrial environments without additional damping
Sizing Data Required
  • CPU socket type/pin count (e.g., LGA4677)
  • Motherboard form factor and layout constraints
  • Thermal solution compatibility and clearance requirements

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thermal degradation and solder joint fatigue
Cause: Cyclic thermal expansion/contraction from CPU power cycling and inadequate cooling, leading to micro-cracks in solder balls (BGA) between CPU and socket, causing intermittent or complete electrical disconnection.
Pin bending, contamination, or oxidation
Cause: Physical mishandling during CPU installation/removal (bent pins), dust accumulation, or exposure to corrosive atmospheres causing poor electrical contact, increased resistance, and signal integrity issues.
Maintenance Indicators
  • System instability: Frequent blue screens, random reboots, or unexplained crashes under load, indicating poor socket contact or thermal issues.
  • Visual inspection: Visible bent/damaged socket pins, discoloration (thermal stress marks), or debris accumulation around the socket area during routine checks.
Engineering Tips
  • Implement strict thermal management: Ensure proper heatsink installation with correct mounting pressure and thermal paste application, maintain clean airflow in server chassis, and monitor CPU temperatures to minimize thermal cycling stress.
  • Enforce careful handling procedures: Use CPU installation tools correctly, avoid socket exposure to contaminants, and perform periodic inspections with anti-static practices to prevent physical damage during maintenance.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ANSI/IPC-6012 - Qualification and Performance Specification for Rigid Printed Boards DIN EN 45502-1 - Active Implantable Medical Devices

Quoted from the published standard.

Manufacturing Precision
  • Socket Pin Alignment: +/-0.05mm
  • Surface Flatness: 0.08mm across entire contact area
Quality Inspection
  • X-ray Inspection for solder joint integrity and void detection
  • Thermal Cycling Test (-40°C to +125°C, 1000 cycles)

Manufacturers of Computer Server CPU Socket Assembly

Manufacturer profiles associated with Computer Server CPU Socket Assembly.

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Frequently Asked Questions

What is the pin count of this CPU socket assembly?

The pin count is 2011 pins, as listed in the technical parameters. This is a reference value; confirm the exact pin configuration with the manufacturer for your specific model.

What is the operating temperature range?

The operating temperature range is -40 to 85 °C. This indicates the ambient temperature limits for reliable operation. Ensure your server environment stays within this range.

What standards are referenced for electrical testing?

Contact resistance is tested per IEC 60512-2, dielectric withstanding voltage per IEC 60512-4, and insulation resistance per IEC 60512-3. These standards are for verification; they do not imply certification of a specific product.

How many insertion/withdrawal cycles can the socket withstand?

The durability is specified as at least 500 cycles. This means the socket can be inserted and removed at least 500 times without failure. For repeated servicing, consider this limit.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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