Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board)

Part Number	Description / PDF	Quantity
AXT326124 Panasonic	CONN SOCKET 26POS SMD GOLD	466
AXK6F22347YG Panasonic	CONN HDR 22POS SMD GOLD	0
AXK6F20547YG Panasonic	CONN HDR 20POS SMD GOLD	278
AXG8600J4A Panasonic	CONN PLUG 60POS SMD GOLD	699
AXK6F20537YG Panasonic	CONN HDR 20POS SMD GOLD	0
AXK860145WG Panasonic	CONN HDR 60POS SMD GOLD	17
AXE560127 Panasonic	CONN SOCKET 60POS SMD GOLD	1675
AXK620347YG Panasonic	CONN HDR 20POS SMD GOLD	1436
AXG840044A Panasonic	CONN PLUG 40POS SMD GOLD	484
AXT616124 Panasonic	CONN HDR 16POS SMD GOLD	1352
AXT380214 Panasonic	CONN SOCKET 80POS SMD GOLD	0
AXE526127 Panasonic	CONN SOCKET 26POS SMD GOLD	0
AXG760044 Panasonic	CONN SOCKET 60POS SMD GOLD	0
AXE544127 Panasonic	CONN SOCKET 44POS SMD GOLD	0
AXF382700 Panasonic	CONN SOCKET 8POS SMD GOLD	0
AXK880145WG Panasonic	CONN HDR 80POS SMD GOLD	2891
AXK6F24337YG Panasonic	CONN HDR 24POS SMD GOLD	0
AXT334154 Panasonic	CONN SOCKET 34POS SMD GOLD	0
AXF5A5012A Panasonic	CONN SOCKET 50POS SMD GOLD	719
AXG244144A Panasonic	CONN HDR 44POS SMD GOLD	447

Rectangular Connectors - Arrays, Edge Type, Mezzanine (Board to Board)

1. Overview

Rectangular connectors are modular electronic components designed to establish electrical connections between subsystems or boards. Arrays, edge type, and mezzanine (board-to-board) connectors enable high-density interconnects in compact spaces. These connectors are critical for modern electronics, supporting miniaturization, high-speed data transfer, and reliable power delivery in applications ranging from consumer devices to industrial systems.

2. Major Types and Functional Classification

Type	Functional Features	Application Examples
Array Connectors	High-pin-count designs with parallel signal/power paths; optimized for compactness and thermal management	Backplanes in servers, high-performance computing (HPC) systems
Edge Connectors	Mount directly onto PCB edges; support planar or right-angle configurations	Memory modules (DIMMs), peripheral expansion cards (GPUs)
Mezzanine Connectors	Vertical/horizontal stacking solutions; support board-to-board spacing from 0.8mm to 50mm	Telecom routers, embedded systems (e.g., COM Express modules)

3. Structure and Components

A typical rectangular connector consists of:

Contact Points: Phosphor bronze or beryllium copper alloys with gold/tin plating for low resistance
Insulation Housing: Thermoplastic materials (e.g., LCP, PBT) ensuring dielectric strength and flame resistance
Retention Mechanism: Polarized keys, latches, or friction locks to prevent accidental disconnection
Shielding: Optional EMI protection via metallic shells or conductive coatings

4. Key Technical Specifications

Parameter	Typical Range	Importance
Current Rating	0.5A 5A per contact	Determines power-handling capability
Voltage Rating	50V 600V AC/DC	Safety and insulation design
Contact Resistance	5 20 m	Impacts signal integrity and thermal performance
Insulation Resistance	>100 G	Prevents leakage currents
Operating Temperature	-55 C to +125 C	Ensures reliability in harsh environments
Mating Cycles	100 10,000 cycles	Defines mechanical durability

5. Application Fields

Telecommunications: 5G base stations, optical network units
Industrial Automation: PLCs, robotic controllers
Medical Devices: MRI scanners, patient monitors
Consumer Electronics: Gaming consoles, notebook computers

6. Leading Manufacturers and Products

Manufacturer	Representative Product	Key Features
TE Connectivity	MikroBlast	High-speed mezzanine connector with 12 Gbps capability
Amphenol	Edge	Edge-mount connectors with self-aligning design
Molex	Clarity	Array connector with 0.4mm pitch for mobile devices
Samtec	QSE Series	Self-mating mezzanine connectors for rugged environments

7. Selection Guidelines

When choosing connectors, consider:

Electrical Requirements: Match current/voltage ratings to system needs
Mechanical Constraints: Verify board spacing and alignment tolerances
Environmental Factors: Select materials for temperature, humidity, and vibration resistance
Cost-Performance Balance: Prioritize high-cycle durability for maintenance-prone systems

Example: For a 5G base station, choose a mezzanine connector with 360 shielding and IP67 rating to minimize signal loss and environmental degradation.

8. Industry Trends

Miniaturization: Pitch sizes below 0.4mm to accommodate compact IoT devices
High-Speed Data Transfer: Development of connectors supporting 56 Gbps+ differential signaling
Modular Designs: Hybrid power/signal connectors for flexible system architectures
Sustainability: Adoption of halogen-free materials and recyclable alloys
Smart Manufacturing: Integration of RFID tags in connectors for automated asset tracking