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Board Spacers, Standoffs

Image Part Number Description / PDF Quantity Rfq
10-44

10-44

Daburn

RND STANDOFF #6-32 STEATITE 3/4"

0
10-42A

10-42A

Daburn

RND STANDOFF #6-32 STEATITE 1/2"

0
10-47

10-47

Daburn

RND STNDFF #6-32 STEATITE 2-1/2"

0
10-45A

10-45A

Daburn

ROUND STANDOFF #6-32 STEATITE 1"

0
10-45F

10-45F

Daburn

RND STANDOFF #10-32 STEATITE 2"

0
10-43

10-43

Daburn

RND STANDOFF #6-32 STEATITE 1/2"

0
10-40A

10-40A

Daburn

RND STANDOFF #8-32 STEATITE 3/4"

0
10-45B

10-45B

Daburn

ROUND STANDOFF #6-32 STEATITE 1"

0
10-45

10-45

Daburn

ROUND STANDOFF #6-32 STEATITE 1"

0
10-45H

10-45H

Daburn

RND STANDOFF #10-32 STEATITE 3"

0
10-45D

10-45D

Daburn

RND STNDFF 10-32 STEATITE 1-1/4"

0
10-44C

10-44C

Daburn

RND STANDOFF #8-32 STEATITE 3/4"

0
10-40E

10-40E

Daburn

ROUND STANDOFF #8-32 STEATITE 2"

0
10-46

10-46

Daburn

RND STNDFF #6-32 STEATITE 1-1/2"

0
10-46A

10-46A

Daburn

RND STNDFF #6-32 STEATITE 1-1/2"

0
10-45C

10-45C

Daburn

RND STANDOFF #10-32 STEATITE 1"

0
10-43A

10-43A

Daburn

RND STANDOFF #6-32 STEATITE 5/8"

0
10-40G

10-40G

Daburn

ROUND STANDOFF #8-32 STEATITE 3"

0
10-44A

10-44A

Daburn

RND STANDOFF #6-32 STEATITE 3/4"

0
10-47B

10-47B

Daburn

RND STNDFF 1/4-20 STEATITE 1-1/2

0

Board Spacers, Standoffs

1. Overview

Board spacers and standoffs are specialized hardware components used to create controlled spacing between printed circuit boards (PCBs), panels, or structural elements. They provide mechanical support, electrical isolation, and thermal management in electronic assemblies. Their importance in modern technology includes enabling compact designs, reducing vibration stress, and improving heat dissipation in devices ranging from smartphones to industrial control systems.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Cylindrical SpacersSimple tubular design with uniform diameterPCB layer separation in consumer electronics
Hexagonal Standoffs6-sided structure for wrench tighteningIndustrial equipment panel mounting
Self-clinching StandoffsPermanent installation with threaded compressionSheet metal enclosures in servers
Adjustable SpacersVariable length through threaded adjustmentPrototype development and testing
Insulated SpacersNon-conductive materials for electrical isolationHigh-voltage power supply assemblies

3. Structure & Composition

Typical construction includes:

  • Material: Stainless steel (corrosion resistance), aluminum (lightweight), or nylon (insulation)
  • Geometry: Cylindrical (standard), stepped (for multiple board heights), or flanged (for load distribution)
  • Installation Features: Internal threading (male/female), knurled surfaces (for grip), or press-fit tabs
  • Surface Treatment: Passivation (metal), UV resistance (plastics), or EMI shielding coating

4. Key Technical Specifications

ParameterImportance
Material Hardness (HV)Determines wear resistance and load capacity
Thread Engagement LengthAffects vibration resistance in dynamic environments
Thermal Conductivity (W/m K)Critical for heat dissipation in power electronics
Dielectric Strength (kV/mm)Safety factor in high-voltage applications
Installation Torque RatingPrevents over-tightening damage to PCBs

5. Application Fields

Primary industries include:

  • Electronics Manufacturing: Server racks, LED displays
  • Automotive: Engine control units (ECUs), ADAS systems
  • Aerospace: Satellite PCB mounting, avionics enclosures
  • Medical Devices: MRI scanner internal structures
  • Consumer Electronics: Smartphone PCB stacking

6. Leading Manufacturers & Products

ManufacturerRepresentative Product
PEMS-8900 Series self-clinching standoffs
RS Components486-8826 insulated hexagonal spacers
Mouser Electronics925206-12 adjustable PCB spacers
McMaster-Carr91285A102 stainless steel standoffs

7. Selection Recommendations

  • Evaluate mechanical load requirements vs material strength
  • Match thread type (UNC/UNF/Metric) with assembly hardware
  • Consider CTE (Coefficient of Thermal Expansion) compatibility with PCB materials
  • Select insulated variants for >50V circuits
  • Use vibration-damping coatings in mobile applications

8. Industry Trends

Emerging developments include:

  • Miniaturization: Sub-1mm spacers for wearable devices
  • Material Innovation: Conductive polymer composites for EMI shielding
  • Smart Integration: Standoffs with embedded strain gauges for structural monitoring
  • Automated Installation: Self-aligning designs for robotic assembly lines
  • Sustainability: Biodegradable plastic options (PLA-based) entering mainstream production
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