Edge Connector

Definition of Edge Connector

An edge connector is a type of electrical connector used in printed circuit boards (PCBs) to establish connections between the board and other components or devices. It typically consists of conductive pads or pins along the edge of the PCB that mate with corresponding connectors or slots on the partnering device. This design allows for easy, secure, and cost-effective connections in various electronic applications such as computers and gaming consoles.


In the International Phonetic Alphabet (IPA), “Edge Connector” can be transcribed as: /ɛdʒ kəˈnɛktər/.

Key Takeaways

  1. Edge Connectors are cost-effective and reliable interconnect solutions used to establish an electrical connection between two printed circuit boards for data and power transmission.
  2. They are available in various types including card edge, board-to-board, and wire-to-board connectors, catering to a wide range of applications such as consumer electronics, automotive, and industrial systems.
  3. Edge Connectors provide design flexibility, easy assembly, and maintain a low profile, making them an ideal choice for compact devices and space-constrained applications.

Importance of Edge Connector

The term “Edge Connector” is important in the field of technology because it refers to a critical component used in establishing electrical connections between various devices and systems.

As an essential part of printed circuit boards (PCBs), edge connectors facilitate seamless communication and data transfer by providing a physical interface where two separate devices can be easily connected.

This enhances the overall performance, maintainability, and versatility of electronic systems, making it possible to efficiently and quickly exchange information between devices.

Moreover, edge connectors improve the user experience by allowing devices to be interconnected with minimal effort, supporting the rapid expansion and advancement of modern technology.


Edge connectors are essential components in today’s electronic devices, as they serve a critical role in establishing a robust and efficient connection between two printed circuit boards (PCBs) or cards. The primary purpose of an edge connector is to facilitate the smooth flow of electrical signals and power between these interconnected boards.

This method eliminates the need for additional cables and soldering, minimizing the likelihood of loose or faulty connections, and ensuring secure data and power transmission. Edge connectors are widely employed in a plethora of applications, from consumer electronics such as gaming consoles and smartphones to aerospace, automotive, and industrial systems, where reliable and compact interconnect solutions are of the utmost importance.

One of the key strengths of edge connectors lies in their versatility and adaptability to cater to various system requirements and design constraints. These connectors come in different sizes, shapes, and pin configurations, allowing engineers and designers to select the most suitable one based on the specific needs of their projects.

Additionally, edge connectors often exhibit attributes such as high-density pin layouts, gold-plated contacts for optimal conductivity, and reinforced structures for greater durability, making them a popular choice for performance-driven applications. In recent times, advancements in edge connector technology have facilitated the development of designs that prioritize modularity and ease-of-use, fostering seamless integration, hassle-free maintenance, and streamlined upgrades for numerous complex devices and systems.

Examples of Edge Connector

BBC micro:bit Edge Connector: The BBC micro:bit is a small, programmable computer designed to teach children about coding and electronics. It features an edge connector on one side, which allows the device to be easily connected to various sensors, actuators, and other electronic components. Users can program the micro:bit to interact with these components and create interactive projects that promote learning and creativity.

Raspberry Pi Pico Edge Connector: Raspberry Pi Pico is a low-cost, high-performance microcontroller board designed for hobbyists, developers, and students. The Pico features an edge connector at the bottom of the board, making it easy to connect the device with expansion boards or “shields” that can provide various functions. This can include sensor integration, motors, GPS, displays, and other components, enhancing the capabilities of the Raspberry Pi Pico and giving users the ability to create a wide range of electronic projects.

PCI Express (PCIe) Edge Connector: The PCI Express (PCIe) is a high-speed serial computer expansion bus standard, commonly used to connect peripherals and add-on cards to a computer’s motherboard. PCIe edge connectors are found on devices like graphics cards, network adapters, and solid-state drives (SSDs). The edge connector allows for easy installation of the card into the computer’s slots, facilitating communication between the device and the motherboard. This enables high-speed data transfer and overall improved performance.

Edge Connector FAQ

What is an Edge Connector?

An Edge Connector is a type of electrical connector designed to connect a printed circuit board, usually at the edge, to another device or component. They are characterized by their ease of use, low profile, and minimal footprint, making them a popular choice for various applications in electronics and computer systems.

What are the main types of Edge Connectors?

There are several types of Edge Connectors, including card edge, FFC/FPC (flexible flat cable/flexible printed circuit), and high-density connectors. Each type is designed for specific applications and has its own unique features, but all provide efficient connections for electronic devices and components.

What are the typical applications of Edge Connectors?

Edge Connectors can be found in a wide range of applications, such as consumer electronics, industrial equipment, automotive systems, and communication devices. They are commonly used to connect expansion cards to motherboards, interconnect multiple PCBs within an enclosure, or link flexible flat cables to PCBs.

What are the advantages of using Edge Connectors?

Edge Connectors offer several benefits, including small size, lightweight, ease of use, and quick assembly. They provide secure and reliable connections while maintaining low insertion forces, and they support a broad range of design options, allowing for increased flexibility in system layout and integration.

How do I choose the right Edge Connector for my project?

To select the appropriate Edge Connector for your project, consider factors such as the number of contacts, pitch, mounting style, and current rating. Evaluate your specific requirements, including mechanical, electrical, and environmental constraints, to ensure the chosen Edge Connector meets your design’s needs and performs reliably in the intended application.

Related Technology Terms

  • Printed Circuit Board (PCB)
  • Expansion Slot
  • Gold Fingers
  • Pin Headers
  • Soldering

Sources for More Information


About The Authors

The DevX Technology Glossary is reviewed by technology experts and writers from our community. Terms and definitions continue to go under updates to stay relevant and up-to-date. These experts help us maintain the almost 10,000+ technology terms on DevX. Our reviewers have a strong technical background in software development, engineering, and startup businesses. They are experts with real-world experience working in the tech industry and academia.

See our full expert review panel.

These experts include:


About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

More Technology Terms

Technology Glossary

Table of Contents