Card Edge Connectors - Edgeboard Connectors

Part Number	Description / PDF	Quantity
6123215-1 TE Connectivity AMP Connectors	CONN EDGE DUAL FMALE 150POS .023	470
6651193-1 TE Connectivity AMP Connectors	CONN EDGE DUAL FEMALE 24POS GOLD	0
EBC20MMSD Sullins Connector Solutions	CONN CARDEDGE MALE 40POS 0.100	0
MDT420M01002 Storage & Server IO (Amphenol ICC)	M.2 4.2H M KEY RIGHT ANGLE	840
ECC50MMAD Sullins Connector Solutions	CONN CARDEDGE MALE 100POS 0.100	0
ME2005602311011 Storage & Server IO (Amphenol ICC)	CONN EDGE DUAL FMALE 56P 0.024	2384
ECC60DJWN Sullins Connector Solutions	CONN EDGE DUAL FMALE 120POS .100	0
EBC30MMND Sullins Connector Solutions	CONN CARDEDGE MALE 60POS 0.100	0
4-1775801-6 TE Connectivity AMP Connectors	CONN PCI EXP FEMALE 164POS 0.039	0
MDT320M01001 Storage & Server IO (Amphenol ICC)	CONN FEMALE 67POS 0.020 GOLD	1911
EBC19MMBN Sullins Connector Solutions	CONN CARDEDGE MALE 38POS 0.100	0
EBM15DSEH Sullins Connector Solutions	CONN EDGE DUAL FMALE 30POS 0.156	37
EBC18DCAN Sullins Connector Solutions	CONN EDGE DUAL FMALE 36POS 0.100	0
MB1-150-01-L-S-02-SL Samtec, Inc.	CONN EDGE SGL FMALE 50POS 0.039	128
GCC20MMVN Sullins Connector Solutions	CONN CARDEDGE MALE 40POS 0.100	0
EBC17MMJD Sullins Connector Solutions	CONN CARDEDGE MALE 34POS 0.100	0
ECC17MMVD Sullins Connector Solutions	CONN CARDEDGE MALE 34POS 0.100	0
1766354-1 TE Connectivity AMP Connectors	CONN EDGE DUAL FEMALE 4POS 0.098	174
10018783-10200MLF Storage & Server IO (Amphenol ICC)	CONN PCI EXP FEMALE 36POS 0.039	0
246411067000883M KYOCERA Corporation	CONN FEMALE 67POS 0.020 GOLD	815

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

Type	Functional Characteristics	Application Examples
PCIe Edge Connectors	High-speed serial communication with low latency	Graphics cards, SSDs, network adapters
DIMM Connectors	Parallel data transfer for memory modules	Desktop/server RAM modules
SATA Edge Connectors	Serial data transfer with hot-swapping capability	HDDs, SSDs, optical drives
USB Type-C Edge Connectors	Bidirectional 24-pin configuration with power delivery	Laptops, 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

Parameter	Typical Value	Importance
Contact Resistance	5-20m	Ensures minimal signal loss
Current Rating	1-5A per contact	Determines power delivery capacity
Dielectric Withstanding Voltage	500-1000V AC	Guarantees electrical safety
Insertion Force	20-60N	Affects user experience and durability
Operating Temperature	-55 C to +125 C	Defines environmental adaptability
Mating Cycles	500-10,000 cycles	Measures 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

Manufacturer	Representative Product	Key Features
Amphenol ICC	SmartSpring PCIe Gen5	7GHz bandwidth, 0.3mm pitch
TE Connectivity	MEZZOP Edge Connector	Double-sided contact design
Molex	SL Series DIMM	2.0N contact force reduction
Samtec	Edge Rate HD	0.8mm 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