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

Rectangular connectors are often found in a variety of devices and appliances, from consumer electronics to industrial equipment. However, not all rectangular connectors are the same. As a popular type of electronic connector, there are three basic types of rectangular connectors: arrays, edge type and mezzanine (board to board).

Array Connectors

Array connectors, also known as grid array connectors, are small connectors that are typically used in compact, lightweight applications. Array connectors are typically made up of several individual pins or contacts arranged into a “grid” pattern. Each individual pin can receive, transmit, or both. The pattern in which the pins are arranged allows the connector to be very tightly packed, providing an efficient use of space to install multiple connections in a small area.

Aside from their small size, array connectors are also known for their versatility. By using an array contact grid, each contact pin can be adapted to fit any pre-determined application. By manipulating the grid pattern, the pin spacing can be adjusted to meet the specific requirements of the design. However, because of the small pin pitches, array connectors are typically not suitable for PCBs with fine-pitch connections.

Edge Type Connectors

Edge type connectors, also known as blade or D-sub connectors, are designed for ease of use. They consist of a single row of pins or contacts arranged in a linear pattern that aligns with matching contacts on the device. This type of connector is popular for consumer electronics, with common examples including computer components, such as video cards, and video game consoles. It is also often used for industrial applications, such as wiring electronic control systems.

Unlike array connectors, edge type connectors typically use straight or flat pins, which have advantages and disadvantages. With straight pins, establishing the connection requires direct contact, making it more difficult to create a reliable connection. Additionally, the flat pins can be difficult to work with, making it difficult to make repairs to the device.

Mezzanine (Board to Board) Connectors

The mezzanine or board to board connector is a type of multi-pin connectors that is used to connect two or more printed circuit boards together. This type of connector is typically designed to be pluggable, allowing the printed circuit boards to be easily connected and disconnected. This convenience makes them ideal for applications where frequent changes or maintenance may be necessary. Mezzanine connectors are also known for their high contact density, allowing a larger number of connections within a small area. Additionally, many mezzanine or board to board connectors come with a locking mechanism to ensure that the connection is secure.

Overall, each type of rectangular connector has its own distinct advantages and disadvantages. Array connectors are popular for their small size, while edge type connectors are easy to use. Meanwhile mezzanine (board to board) connectors have a high contact density and are designed to be pluggable. Ultimately, the type of connector used depends on the specific requirements and application.

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