Rectangular Connectors - Board Spacers, Stackers (Board to Board)

Image Part Number Description / PDF Quantity Rfq
92813-004TR

92813-004TR

Storage & Server IO (Amphenol ICC)

CONN HDR 14POS 0.079 STACK SMD

0

54122-807121250LF

54122-807121250LF

Storage & Server IO (Amphenol ICC)

CONN HDR 12POS 0.1 STACK T/H

0

54122-810401600LF

54122-810401600LF

Storage & Server IO (Amphenol ICC)

CONN HDR 40POS 0.1 STACK T/H

0

54122-109161150LF

54122-109161150LF

Storage & Server IO (Amphenol ICC)

CONN HDR 16POS 0.1 STACK T/H

0

54122-108641400LF

54122-108641400LF

Storage & Server IO (Amphenol ICC)

CONN HDR 64POS 0.1 STACK T/H

0

54121-811021200LF

54121-811021200LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54242-109101450LF

54242-109101450LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK SMD

0

76745-5ANR10LF

76745-5ANR10LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK T/H

0

54112-811081900LF

54112-811081900LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H

0

76745-1CD-40LF

76745-1CD-40LF

Storage & Server IO (Amphenol ICC)

CONN HDR 40POS 0.1 STACK T/H

0

54122-812202450LF

54122-812202450LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.1 STACK T/H

0

54112-111082000LF

54112-111082000LF

Storage & Server IO (Amphenol ICC)

BERGSTIK CONN STACKER

0

54112-103340800LF

54112-103340800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 34POS 0.1 STACK T/H

0

54121-424053250LF

54121-424053250LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

59202-G30-25-099LF

59202-G30-25-099LF

Storage & Server IO (Amphenol ICC)

CONN STACKER 50POS 2MM SMD

0

54121-104200950LF

54121-104200950LF

Storage & Server IO (Amphenol ICC)

BERGSTIK CONN STACKER

0

59202-F26-20-050LF

59202-F26-20-050LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

54121-411041700LF

54121-411041700LF

Storage & Server IO (Amphenol ICC)

CONN HDR 4POS 0.1 STACK T/H TIN

0

59202-G40-25-174LF

59202-G40-25-174LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

54122-111720800LF

54122-111720800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 72POS 0.1 STACK T/H

0

Rectangular Connectors - Board Spacers, Stackers (Board to Board)

1. Overview

Rectangular board spacers and stackers are interconnect solutions designed to establish mechanical and electrical connections between two or more printed circuit boards (PCBs). These connectors maintain precise spacing while enabling signal/power transmission. Their importance in modern electronics includes enabling compact designs, modular system architectures, and reliable high-speed data transfer in applications ranging from consumer devices to industrial equipment.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Board SpacersFixed pitch, non-mating interconnects with insulating pillarsSmartphone mid-frames, IoT sensor modules
Stacking ConnectorsSelf-mating design with compressible contactsEmbedded computing boards, FPGA development kits
High-Speed StackersControlled impedance, low crosstalk design5G base stations, network switches
Compliant Pin StackersPress-fit terminations for Z-axis complianceAutomotive radar systems, medical imaging devices

3. Structure and Components

Typical construction includes:

  • Insulating housing (LCP/PBT with UL94 V-0 rating)
  • Phosphor bronze or beryllium copper contacts
  • Gold-plated contact areas (0.5-3 m thickness)
  • Polarization keying to prevent misalignment
  • Integrated locking mechanisms (latches/snap-fits)
  • Optional EMI shielding layers

4. Key Technical Specifications

ParameterTypical RangeImportance
Current Rating0.5A - 5A per contactDictates power delivery capability
Contact Resistance5-20m Impacts signal integrity
Dielectric Strength500V - 2500V ACEnsures electrical safety
Operating Temperature-55 C to +125 CDetermines environmental robustness
Insertion Force0.5N - 5N per contactAffects assembly process
Mating Cycles500 - 10,000 cyclesDefines service life expectancy

5. Application Fields

  • Telecommunications: Server backplanes, 5G NR radios
  • Industrial Automation: PLC modules, CNC controller stacks
  • Consumer Electronics: Foldable device hinge connectors
  • Medical Devices: MRI system detector arrays
  • Automotive: ADAS sensor stacking modules

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
TE ConnectivitySMART Board Stacker12 Gbps capability, self-aligning
MolexImpel High-Speed Connector25+ Gbps, floating compliance
AmphenolCBGA InterposerMicro BGA footprint compatibility
JAE ElectronicsDF59 Series0.4mm pitch, 0.3mm stack height

7. Selection Recommendations

Key considerations:

  • Electrical requirements vs. contact density needs
  • Stack height tolerance stack-up analysis
  • Thermal expansion coefficient matching
  • Field serviceability requirements
  • Automated optical inspection (AOI) compatibility

Case Study: In automotive camera module design, compliant pin stackers reduced assembly time by 40% while maintaining ISO 16750 vibration compliance.

8. Industry Trends

  • Migration to 0.3mm pitch connectors for mobile applications
  • Integration of coaxial contacts for RF board-to-board links
  • Adoption of additive manufacturing for complex shapes
  • Increased adoption of press-fit terminations in harsh environments
  • Development of hybrid optical-electrical stacking solutions
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