Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
0459120032

0459120032

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0457190005

0457190005

Woodhead - Molex

CONN EDGE DUAL FEMALE 6POS 0.508

680

0877159902

0877159902

Woodhead - Molex

CONN EDGE DUAL FMALE 98POS 0.039

0

0459110015

0459110015

Woodhead - Molex

CONN EDGE DUAL FMALE 18POS 0.508

0

0459110012

0459110012

Woodhead - Molex

CONN EDGE DUAL FMALE 12POS 0.508

680

0766911046

0766911046

Woodhead - Molex

CONN EDGE DUAL FMALE 46POS 0.031

0

1511873098

1511873098

Woodhead - Molex

EDGELINE 0.062 PCB 98CKTS

0

0459110028

0459110028

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0458440001

0458440001

Woodhead - Molex

CONN EDGE DUAL FEMALE 16POS GOLD

0

1700820216

1700820216

Woodhead - Molex

CONN EDGE DUAL FMALE 216POS .092

13

0459110034

0459110034

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

0

0766912080

0766912080

Woodhead - Molex

CONN EDGE DUAL FMALE 80POS 0.031

0

0458440002

0458440002

Woodhead - Molex

CONN EDGE DUAL FEMALE 24POS GOLD

0

0458440003

0458440003

Woodhead - Molex

CONN EDGE DUAL FEMALE 32POS GOLD

0

1703050118

1703050118

Woodhead - Molex

093 COPLANAR+ 118CKT 6CKT PWR

0

0766912108

0766912108

Woodhead - Molex

CONN EDGE DUAL FMALE 108POS .031

0

1706721170

1706721170

Woodhead - Molex

CONN EDGE DUAL FMALE 170POS .031

0

0457140003

0457140003

Woodhead - Molex

CONN EDGE DUAL FEMALE 8POS 0.508

0

0459110042

0459110042

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0459110050

0459110050

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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