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

Image Part Number Description / PDF Quantity Rfq
54122-816242250LF

54122-816242250LF

Storage & Server IO (Amphenol ICC)

CONN HDR 24POS 0.1 STACK T/H

0

54121-809161550LF

54121-809161550LF

Storage & Server IO (Amphenol ICC)

CONN HDR 16POS 0.1 STACK T/H

0

98426-S03-22-118LF

98426-S03-22-118LF

Storage & Server IO (Amphenol ICC)

CONN HDR 44POS 0.079 STACK T/H

0

54122-403140800LF

54122-403140800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 14POS 0.1 STACK T/H TIN

0

75970-330-03LF

75970-330-03LF

Storage & Server IO (Amphenol ICC)

CONN HDR 3POS 0.1 STACK T/H TIN

0

98426-G06-17-148LF

98426-G06-17-148LF

Storage & Server IO (Amphenol ICC)

CONN HDR 34POS 0.079 STACK T/H

0

54122-402400800RLF

54122-402400800RLF

Storage & Server IO (Amphenol ICC)

CONN HDR 40POS 0.1 STACK T/H TIN

0

75970-393-11LF

75970-393-11LF

Storage & Server IO (Amphenol ICC)

CONN HDR 11POS 0.1 STACK T/H TIN

0

59202-S36-25-114LF

59202-S36-25-114LF

Storage & Server IO (Amphenol ICC)

CONN HDR 50POS 0.079 STACK SMD

0

69057-006LF

69057-006LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

54122-409161800LF

54122-409161800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 16POS 0.1 STACK T/H TIN

0

59132-S34-03-094LF

59132-S34-03-094LF

Storage & Server IO (Amphenol ICC)

MTK R/R STR HDR

0

54122-107120950RLF

54122-107120950RLF

Storage & Server IO (Amphenol ICC)

CONN HDR 12POS 0.1 STACK T/H

0

59112-G40-25-166LF

59112-G40-25-166LF

Storage & Server IO (Amphenol ICC)

MTK R/R STR HDR

0

59112-T28-10-047LF

59112-T28-10-047LF

Storage & Server IO (Amphenol ICC)

CONN HDR 20POS 0.079 STACK T/H

0

59112-T38-02-130LF

59112-T38-02-130LF

Storage & Server IO (Amphenol ICC)

MTK R/R SMT HDR

0

54121-112060800LF

54121-112060800LF

Storage & Server IO (Amphenol ICC)

CONN HDR 6POS 0.1 STACK T/H

0

54122-520402050LF

54122-520402050LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54112-820162000LF

54112-820162000LF

Storage & Server IO (Amphenol ICC)

CONN HDR

0

54111-105020850LF

54111-105020850LF

Storage & Server IO (Amphenol ICC)

CONN HDR 2POS 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