Understanding the Varieties of Board-to-Board Connectors: Straight, Right-Angle, and Mezzanine

The world of electronics is ever-evolving, and ensuring optimal connections between printed circuit boards (PCBs) is crucial for the functionality and reliability of devices. Board-to-board connectors play a pivotal role in PCB interconnect solutions, providing essential links between boards to facilitate communication and power transfer. Among the various types available, straight, right-angle, and mezzanine connectors are widely used, each serving distinct purposes and applications. In this comprehensive guide, we delve into the intricacies of these connectors, exploring their designs, applications, advantages, and potential drawbacks to help you make an informed decision for your specific needs.

Straight Board-to-Board Connectors


Straight board-to-board connectors are characterized by their linear design, with connector pins aligned in a straight line parallel to the PCB. This straightforward design ensures a robust and secure connection, making them a popular choice in various electronic devices.


Straight connectors are commonly used in situations where space is not a constraint, and a direct, linear connection is preferred. They are ideal for connecting boards that are situated on the same plane, providing a stable and reliable link. Their simplicity also makes them a cost-effective option for many applications, ranging from consumer electronics to industrial machinery.

Advantages and Disadvantages

The main advantage of straight connectors is their straightforward design, which ensures a secure and robust connection. However, they may require more space than other types of connectors, making them less suitable for compact or space-constrained designs. Furthermore, while they generally provide excellent signal integrity, the length of the connector can impact performance in high-frequency applications, necessitating careful consideration and potentially additional signal integrity measures.

Right-Angle Board-to-Board Connectors


Right-angle connectors provide a compact solution for connecting PCBs, with pins aligned at a 90-degree angle to the board. This design enables the connection of boards situated at different planes, offering versatility in space-constrained environments.


These connectors are especially beneficial in compact and portable devices, where saving space is a priority. They are commonly found in smartphones, tablets, and other handheld devices, as well as in applications where the PCBs are mounted perpendicularly to each other.

Advantages and Disadvantages

The compact design of right-angle connectors makes them an excellent choice for space-saving applications, and their ability to connect boards at different planes adds to their versatility. However, the right-angle bend can pose challenges for signal integrity, especially in high-frequency applications, requiring careful design considerations to mitigate potential issues. Additionally, the mechanical stress at the bend can impact the connector’s longevity if not properly addressed.

Mezzanine Board-to-Board Connectors


Mezzanine connectors are designed for vertical stacking of PCBs, providing a space-efficient solution for high-density electronic assemblies. These connectors enable boards to be mounted directly above each other, minimizing the device’s footprint.


Mezzanine connectors are extensively used in applications where space is at a premium, such as in laptops, servers, and networking equipment. They are also common in industrial and military applications, where the compact and robust design is crucial.

Advantages and Disadvantages

One of the primary advantages of mezzanine connectors is their ability to save horizontal space, making them ideal for compact devices. However, this vertical stacking can create challenges in terms of thermal management, as the heat generated by the boards can accumulate, necessitating effective cooling solutions. Additionally, the vertical alignment requires precision in manufacturing and assembly to ensure a reliable connection.

Choosing the Right Connector for Your Application

Factors to Consider

Selecting the right board-to-board connector is crucial for ensuring optimal performance and reliability in your device. Factors to consider include the spatial constraints of your design, the required signal integrity, and the mechanical stability of the connection. The operating environment, including potential exposure to harsh conditions, should also be taken into account.

Tips and Best Practices

To ensure the best possible connection, it’s vital to thoroughly evaluate your device’s requirements and consult with connector manufacturers or experts when necessary. Consideration of the connector’s material and plating, as well as its resistance to environmental factors, will also play a crucial role in the connector’s performance and longevity.


Board-to-board connectors are indispensable components in electronic devices, and choosing the right type is critical for ensuring optimal performance. Straight, right-angle, and mezzanine connectors each offer unique advantages and are suited to different applications. By considering the specific needs of your device and consulting with experts when necessary, you can ensure a reliable and robust connection that stands the test of time.

Discover the Ideal Connector with LXW Connector

At LXW Connector, we understand the critical role that board-to-board connectors play in electronic devices. Our extensive range of high-quality connectors is designed to meet a variety of needs, ensuring optimal performance and reliability. We invite you to explore our product offerings and get in touch with us at [email protected] to discuss your specific requirements. Our team of experts is here to help you find the perfect connector solution for your application, and we look forward to assisting you in achieving unparalleled connectivity and performance in your devices.