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

Image Part Number Description / PDF Quantity Rfq
54111-406361500LF

54111-406361500LF

Storage & Server IO (Amphenol ICC)

CONN HDR 36POS 0.1 STACK T/H TIN

0

54112-802300800LF

54112-802300800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 30POS 0.1 STACK T/H

0

54111-109041800LF

54111-109041800LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

59202-F30-25A060LF

59202-F30-25A060LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

59112-S26-04-032LF

59112-S26-04-032LF

Storage & Server IO (Amphenol ICC)

MTK R/R STR HDR

0

76745-124-18LF

76745-124-18LF

Storage & Server IO (Amphenol ICC)

CONN HDR 18POS 0.1 STACK T/H

0

10066848-105LF

10066848-105LF

Storage & Server IO (Amphenol ICC)

CONN HDR 14POS 0.079 STACK T/H

0

54776-115-32LF

54776-115-32LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54122-103140900LF

54122-103140900LF

Storage & Server IO (Amphenol ICC)

CONN HDR 14POS 0.1 STACK T/H

0

75970-323-16LF

75970-323-16LF

Storage & Server IO (Amphenol ICC)

BERGSTIK-DEROG 12-ASS-100

0

54112-109401300LF

54112-109401300LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54112-107641100LF

54112-107641100LF

Storage & Server IO (Amphenol ICC)

CONN HDR 64POS 0.1 STACK T/H

0

75970-829-20LF

75970-829-20LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.1 STACK T/H

0

54122-406180800LF

54122-406180800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 18POS 0.1 STACK T/H TIN

0

76745-121-10LF

76745-121-10LF

Storage & Server IO (Amphenol ICC)

CONN HDR 10POS 0.1 STACK T/H

0

54776-105-36LF

54776-105-36LF

Storage & Server IO (Amphenol ICC)

CONN HDR 36POS 0.1 STACK T/H

0

54242-810202050LF

54242-810202050LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.1 STACK SMD

0

54122-412082200LF

54122-412082200LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H TIN

0

59202-S38-06P635LF

59202-S38-06P635LF

Storage & Server IO (Amphenol ICC)

MINITEK 2.0

0

54112-118041500LF

54112-118041500LF

Storage & Server IO (Amphenol ICC)

CONN 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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