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

Image Part Number Description / PDF Quantity Rfq
59132-T36-05-098LF

59132-T36-05-098LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.079 STACK T/H

0

87690-109RLF

87690-109RLF

Storage & Server IO (Amphenol ICC)

HDR STR DR DB.100 GP POL-DEROG

0

54112-109061800LF

54112-109061800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 6POS 0.1 STACK T/H

0

98426-G16-04-297LF

98426-G16-04-297LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.079 STACK T/H

0

90599-072LF

90599-072LF

Storage & Server IO (Amphenol ICC)

CONN HDR 30POS 0.079 STACK T/H

0

10066848-602LF

10066848-602LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54111-103300800LF

54111-103300800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 30POS 0.1 STACK T/H

0

76745-3EF-10LF

76745-3EF-10LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK T/H TIN

0

10144183-112LF

10144183-112LF

Storage & Server IO (Amphenol ICC)

MTK SPACE TERMINAL-MALE CTW 26-3

0

54112-103260950LF

54112-103260950LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54122-110321300LF

54122-110321300LF

Storage & Server IO (Amphenol ICC)

CONN HDR 32POS 0.1 STACK T/H

0

54121-414031900LF

54121-414031900LF

Storage & Server IO (Amphenol ICC)

CONN HDR 3POS 0.1 STACK T/H TIN

0

98426-S04-04-133LF

98426-S04-04-133LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.079 STACK T/H

0

98426-G03-10-118LF

98426-G03-10-118LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.079 STACK T/H

0

54122-810101900LF

54122-810101900LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK T/H

0

59112-T38-15-135LF

59112-T38-15-135LF

Storage & Server IO (Amphenol ICC)

MTK R/R STR HDR

0

54112-108101200LF

54112-108101200LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK T/H

0

54122-107120800LF

54122-107120800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 12POS 0.1 STACK T/H

0

54122-108261000LF

54122-108261000LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

59112-G28-14-055

59112-G28-14-055

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

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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