Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
0459110049

0459110049

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

0

0459120034

0459120034

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

0

1717742146

1717742146

Woodhead - Molex

EDGELINE25 CONNECTOR ASSY 0.76AU

0

0459120026

0459120026

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

0764211000

0764211000

Woodhead - Molex

CONN EDGE DUAL FMALE 108POS .031

0

0877159912

0877159912

Woodhead - Molex

CONN EDGE DUAL FMALE 164POS .039

0

0467200001

0467200001

Woodhead - Molex

CONN EDGE DUAL FMALE 64POS 0.031

0

0459110046

0459110046

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0459110017

0459110017

Woodhead - Molex

CONN EDGE DUAL FMALE 18POS 0.508

0

0459120025

0459120025

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

0877153917

0877153917

Woodhead - Molex

CONN PCI EXP FEMALE 280POS 0.039

0

0459110027

0459110027

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0877159901

0877159901

Woodhead - Molex

CONN FEMALE 26POS 0.039 GOLD

0

0459120030

0459120030

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

0459120001

0459120001

Woodhead - Molex

CONN EDGE DUAL FMALE 10POS 0.508

0

0459110032

0459110032

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

1706721200

1706721200

Woodhead - Molex

CONN EDGE DUAL FMALE 200POS .031

0

0768611000

0768611000

Woodhead - Molex

CONN EDGE DUAL FMALE 46POS 0.031

336

0459110030

0459110030

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

0459110035

0459110035

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

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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