Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
341-026-520-201

341-026-520-201

EDAC Inc.

CONN EDGE DUAL FMALE 26POS 0.100

0

10055293-10000TLF

10055293-10000TLF

Storage & Server IO (Amphenol ICC)

CONN PCI EXP FEMALE 98POS 0.039

0

EBM28MMNN

EBM28MMNN

Sullins Connector Solutions

CONN CARDEDGE MALE 56POS 0.156

0

MEC8-140-02-S-DV-TR

MEC8-140-02-S-DV-TR

Samtec, Inc.

CONN EDGE DUAL FMALE 80POS 0.031

0

ECC04MMBD

ECC04MMBD

Sullins Connector Solutions

CONN CARDEDGE MALE 8POS 0.100

0

EBC04MMSN

EBC04MMSN

Sullins Connector Solutions

CONN CARDEDGE MALE 8POS 0.100

0

MEC2-05-01-L-TH1-WT

MEC2-05-01-L-TH1-WT

Samtec, Inc.

2.00 MM MINI EDGE CARD CONNECTOR

23

2344604-1

2344604-1

TE Connectivity AMP Connectors

50 AMP CARD EDGE ASSEMBLY

1853

395-056-527-801

395-056-527-801

EDAC Inc.

CONN EDGE DUAL FMALE 56POS 0.100

0

3-2337939-7

3-2337939-7

TE Connectivity AMP Connectors

PCIE GEN4 CON,SMT,98POS,GF,MYLAR

420

ECC20MMVN

ECC20MMVN

Sullins Connector Solutions

CONN CARDEDGE MALE 40POS 0.100

0

746-072-525-201

746-072-525-201

EDAC Inc.

CONN EDGE DUAL FMALE 144POS .125

0

MEC1-105-02-S-D-A

MEC1-105-02-S-D-A

Samtec, Inc.

CONN EDGE DUAL FMALE 10POS 0.039

33

EBC10DCAH

EBC10DCAH

Sullins Connector Solutions

CONN EDGE DUAL FMALE 20POS 0.100

0

0877159009

0877159009

Woodhead - Molex

CONN PCI EXP FEMALE 36POS 0.039

0

MEC8-120-02-L-DV-A-TR

MEC8-120-02-L-DV-A-TR

Samtec, Inc.

CONN EDGE DUAL FMALE 40POS 0.031

0

ECM16MMSN

ECM16MMSN

Sullins Connector Solutions

CONN CARDEDGE MALE 32POS 0.156

0

1766308-1

1766308-1

TE Connectivity AMP Connectors

CONN CROWN EDGE FMALE 44POS GOLD

128

EBC35MMMD

EBC35MMMD

Sullins Connector Solutions

CONN CARDEDGE MALE 70POS 0.100

0

EBC20MMNN

EBC20MMNN

Sullins Connector Solutions

CONN CARDEDGE MALE 40POS 0.100

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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