Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
0762910226

0762910226

Woodhead - Molex

CONN EDGE DUAL FMALE 226POS .030

4

2066530140

2066530140

Woodhead - Molex

EDGELINESLIVER ASSY VT SMT 140PO

0

0877159202

0877159202

Woodhead - Molex

CONN EDGE DUAL FMALE 98POS 0.039

257

0877159007

0877159007

Woodhead - Molex

CONN PCI EXP FEMALE 36POS 0.039

0

0877153909

0877153909

Woodhead - Molex

CONN PCI EXP FEMALE 230POS 0.039

1061

0877159001

0877159001

Woodhead - Molex

CONN PCI EXP FEMALE 36POS 0.039

1416

0877159106

0877159106

Woodhead - Molex

CONN PCI EXP FEMALE 64POS 0.039

3027

0679105700

0679105700

Woodhead - Molex

CONN PCI EXP MINI FEMALE 52POS

6670

0457140001

0457140001

Woodhead - Molex

CONN EDGE DUAL FEMALE 4POS 0.508

4

0877159302

0877159302

Woodhead - Molex

CONN EDGE DUAL FMALE 164POS .039

257

0459120011

0459120011

Woodhead - Molex

CONN EDGE DUAL FMALE 18POS 0.508

0

0766931170

0766931170

Woodhead - Molex

CONN EDGE DUAL FMALE 170POS .031

0

0459110044

0459110044

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

0459110047

0459110047

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0467200016

0467200016

Woodhead - Molex

CONN EDGE DUAL FMALE 108POS .031

0

0766912278

0766912278

Woodhead - Molex

CONN EDGE DUAL FMALE 278POS .031

0

0757910001

0757910001

Woodhead - Molex

CONN AMC B+ FEMALE 170POS 0.029

0

0762910170

0762910170

Woodhead - Molex

CONN EDGE DUAL FMALE 170POS .030

0

0459120012

0459120012

Woodhead - Molex

CONN EDGE DUAL FMALE 12POS 0.508

0

2066530168

2066530168

Woodhead - Molex

EDGELINE SLIVER ASSY 4C+ VT SMT

0

Card Edge Connectors - Edgeboard Connectors

1. Overview

Card Edge Connectors, also known as Edgeboard Connectors, are electrical connectors designed to connect printed circuit boards (PCBs) directly to other boards or systems via their edges. These connectors eliminate the need for separate cables or wiring harnesses by utilizing the PCB's edge as both the mechanical support and electrical interface. They play a critical role in modern electronics by enabling compact designs, reliable signal transmission, and modular system architectures.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
PCIe Edge ConnectorsHigh-speed serial communication with low latencyGraphics cards, SSDs, network adapters
DIMM ConnectorsParallel data transfer for memory modulesDesktop/server RAM modules
SATA Edge ConnectorsSerial data transfer with hot-swapping capabilityHDDs, SSDs, optical drives
USB Type-C Edge ConnectorsBidirectional 24-pin configuration with power deliveryLaptops, mobile devices, docking stations

3. Structure and Components

Typical card edge connectors consist of: - Contact Points: Phosphor bronze or beryllium copper with gold-plated surfaces (10-50 m thickness) for low resistance - Insulation Body: High-temperature resistant LCP or nylon materials (UL94 V-0 rated) - Retention Mechanism: Integrated latches or screws for vibration resistance - PCB Interface: Precision-machined slots with alignment guides ( 0.05mm tolerance) - Shielding Layer: EMI-suppressing metal shells for high-frequency applications

4. Key Technical Specifications

ParameterTypical ValueImportance
Contact Resistance5-20m Ensures minimal signal loss
Current Rating1-5A per contactDetermines power delivery capacity
Dielectric Withstanding Voltage500-1000V ACGuarantees electrical safety
Insertion Force20-60NAffects user experience and durability
Operating Temperature-55 C to +125 CDefines environmental adaptability
Mating Cycles500-10,000 cyclesMeasures mechanical longevity

5. Application Fields

  • Computer Systems: Motherboards, expansion cards, memory modules
  • Telecommunications: 5G base stations, network switches
  • Industrial Automation: PLCs, control panels
  • Medical Equipment: MRI scanners, diagnostic devices
  • Consumer Electronics: Smartphones, gaming consoles

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Amphenol ICCSmartSpring PCIe Gen57GHz bandwidth, 0.3mm pitch
TE ConnectivityMEZZOP Edge ConnectorDouble-sided contact design
MolexSL Series DIMM2.0N contact force reduction
SamtecEdge Rate HD0.8mm pitch, 25Gbps per channel

7. Selection Guidelines

Key considerations include: - Signal integrity requirements (frequency vs. crosstalk) - Mechanical constraints (board thickness, spacing) - Environmental conditions (temperature, vibration) - Compliance standards (IPC, RoHS) - Cost-performance balance (gold thickness vs. mating cycles) - Example: For a 10Gbps Ethernet switch, select connectors with controlled impedance (100 10%) and low insertion loss (<0.5dB at 12.5GHz)

8. Industry Trends

Current development directions: - High-density designs (sub-0.5mm pitch) - Enhanced thermal management for 5G applications - Integration with optical interconnects - Surface-mount technology (SMT) adoption - Increased use of conductive polymers for contact materials - Development of self-aligning connectors for automated assembly

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