Card Edge Connectors - Edgeboard Connectors

Image Part Number Description / PDF Quantity Rfq
0459120035

0459120035

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

0

2066530084

2066530084

Woodhead - Molex

EDGELINE SLIVER ASSY 2C VT SMT 8

0

0459110011

0459110011

Woodhead - Molex

CONN EDGE DUAL FMALE 18POS 0.508

0

2072628193

2072628193

Woodhead - Molex

SLIVER ASSY 4C+1.93MM STRADDLEMN

0

0459110004

0459110004

Woodhead - Molex

CONN EDGE DUAL FMALE 10POS 0.508

0

0459110003

0459110003

Woodhead - Molex

CONN EDGE DUAL FMALE 10POS 0.508

0

0457190006

0457190006

Woodhead - Molex

CONN EDGE DUAL FEMALE 8POS 0.508

0

2072620193

2072620193

Woodhead - Molex

ASSY OCP 4C 1.93MM BD STRADDLEMN

0

0459110051

0459110051

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0459110031

0459110031

Woodhead - Molex

CONN EDGE DUAL FMALE 26POS 0.508

0

2072638236

2072638236

Woodhead - Molex

SLIVER ASSY 4C+2.36MM STRADDLEMN

0

2066538280

2066538280

Woodhead - Molex

EDGELINE SLIVER ASSY 8C VT SMT W

0

0457140002

0457140002

Woodhead - Molex

CONN EDGE DUAL FEMALE 6POS 0.508

0

0459110014

0459110014

Woodhead - Molex

CONN EDGE DUAL FMALE 12POS 0.508

0

2066530056

2066530056

Woodhead - Molex

EDGELINE SLIVER ASSY VT SMT 56PO

0

0459120002

0459120002

Woodhead - Molex

CONN EDGE DUAL FMALE 10POS 0.508

0

0459110052

0459110052

Woodhead - Molex

CONN EDGE DUAL FMALE 14POS 0.508

0

1720503178

1720503178

Woodhead - Molex

EDGELINE+ ESP 178CKT 0062PCB 40A

0

0459110033

0459110033

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 0.508

0

0459120028

0459120028

Woodhead - Molex

CONN EDGE DUAL FMALE 20POS 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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