Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
MDT180A03001

MDT180A03001

Storage & Server IO (Amphenol ICC)

CONN FEMALE 67POS 0.020 GOLD

1414

1-2340321-2

1-2340321-2

TE Connectivity AMP Connectors

ASSY STRADDLE MOUNT 168P 076 SLI

937

EBM22MMWN

EBM22MMWN

Sullins Connector Solutions

CONN CARDEDGE MALE 44POS 0.156

5

10018783-11110TLF

10018783-11110TLF

Storage & Server IO (Amphenol ICC)

CONN PCI EXP FEMALE 36POS 0.039

597

EBC10MMMD

EBC10MMMD

Sullins Connector Solutions

CONN CARDEDGE MALE 20POS 0.100

0

HSEC8-110-01-L-RA-TR

HSEC8-110-01-L-RA-TR

Samtec, Inc.

CONN EDGE DUAL FMALE 20POS 0.031

170

5145165-8

5145165-8

TE Connectivity AMP Connectors

CONN PCI CARDEDGE FEMALE 184POS

1243

EBC30MMBN

EBC30MMBN

Sullins Connector Solutions

CONN CARDEDGE MALE 60POS 0.100

0

10018783-10002MLF

10018783-10002MLF

Storage & Server IO (Amphenol ICC)

CONN PCI EXP FEMALE 98POS 0.039

315

EBC05MMRV

EBC05MMRV

Sullins Connector Solutions

CONN CARDEDGE MALE 10POS 0.100

0

10018784-11103TLF

10018784-11103TLF

Storage & Server IO (Amphenol ICC)

CONN PCI EXP FEMALE 164POS 0.039

0

EBC18DRXH

EBC18DRXH

Sullins Connector Solutions

CONN EDGE DUAL FMALE 36POS 0.100

137

395-044-520-204

395-044-520-204

EDAC Inc.

CONN EDGE DUAL FMALE 44POS 0.100

0

G630H361621EU

G630H361621EU

Storage & Server IO (Amphenol ICC)

CONN PCI EXP FEMALE 36POS 0.039

2038

RBB34DHAS

RBB34DHAS

Sullins Connector Solutions

CONN EDGE DUAL FMALE 68POS 0.050

0

ESC25DRXH

ESC25DRXH

Sullins Connector Solutions

CONN EDGE DUAL FMALE 50POS 0.100

0

6650380-2

6650380-2

TE Connectivity AMP Connectors

CONN EDGE DUAL FEMALE 4POS 0.508

0

10128302-002LF

10128302-002LF

Storage & Server IO (Amphenol ICC)

CARD EDGE CONN

0

EMC10DRXH

EMC10DRXH

Sullins Connector Solutions

CONN EDGE DUAL FMALE 20POS 0.100

179

EBC05DRXS

EBC05DRXS

Sullins Connector Solutions

CONN EDGE DUAL FMALE 10POS 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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