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

Image Part Number Description / PDF Quantity Rfq
54111-106020850LF

54111-106020850LF

Storage & Server IO (Amphenol ICC)

CONN HDR 2POS 0.1 STACK T/H

0

54112-119261100LF

54112-119261100LF

Storage & Server IO (Amphenol ICC)

CONN HDR 26POS 0.1 STACK T/H

0

54122-116082000LF

54122-116082000LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H

0

75970-112-18LF

75970-112-18LF

Storage & Server IO (Amphenol ICC)

CONN HDR 18POS 0.1 STACK T/H

0

77709-129LF

77709-129LF

Storage & Server IO (Amphenol ICC)

CONN HDR 14POS 0.1 STACK T/H

0

54122-109080900LF

54122-109080900LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H

0

54122-103720800LF

54122-103720800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 72POS 0.1 STACK T/H

0

54121-109041500LF

54121-109041500LF

Storage & Server IO (Amphenol ICC)

CONN HDR 4POS 0.1 STACK T/H

0

54122-806080950LF

54122-806080950LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H

0

54122-112401850LF

54122-112401850LF

Storage & Server IO (Amphenol ICC)

CONN HDR 40POS 0.1 STACK T/H

0

54122-104240800LF

54122-104240800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 24POS 0.1 STACK T/H

0

54121-807021400LF

54121-807021400LF

Storage & Server IO (Amphenol ICC)

CONN HDR 2POS 0.1 STACK T/H

0

54122-803260800LF

54122-803260800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 26POS 0.1 STACK T/H

0

59202-T32-10A074LF

59202-T32-10A074LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.079 STACK SMD

0

54121-108081000LF

54121-108081000LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.1 STACK T/H

0

20021811-05022T1LF

20021811-05022T1LF

Storage & Server IO (Amphenol ICC)

CONN HDR 22POS 0.05 STACK T/H

0

59202-F28-10-048LF

59202-F28-10-048LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

98426-G12-08-210LF

98426-G12-08-210LF

Storage & Server IO (Amphenol ICC)

CONN HDR 16POS 0.079 STACK T/H

0

20021831-04508T1LF

20021831-04508T1LF

Storage & Server IO (Amphenol ICC)

CONN HDR 8POS 0.05 STACK SMD

0

54121-112042000LF

54121-112042000LF

Storage & Server IO (Amphenol ICC)

CONN HDR 4POS 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
RFQ BOM Call Skype Email
Top