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Understanding Electronic Connectors for Industry Professionals

Electronic connectors are an essential part of the technology and manufacturing world. They provide the necessary connections between electronic devices and systems, allowing for seamless communication and data transfer. From aerospace to automotive, electronic connectors are essential components that facilitate the transfer of data and power between electronic devices.

This blog aims to provide a comprehensive overview of electronic connectors, their different types and applications, and best practices for selecting them in an industrial setting.

What are Electronic Connectors?

Electronic connectors are indispensable components in electronic devices, enabling the seamless transmission of data, signals, and power between various elements or systems. Available in a myriad of shapes, sizes, and configurations, these connectors are designed to meet the distinct requirements of diverse applications.

Electronic connectors, primarily metal, are vital for reliable, secure circuit connections. They ensure seamless communication and efficiency across devices like smartphones, computers, industrial machinery, and aerospace systems.

Electronic connectors are designed to withstand various environmental conditions like extreme temperatures, humidity, and vibration. They ensure optimal performance, and longevity, and are tailored to meet specific signal integrity, power specifications, and data transmission speeds.

Types of Electronic Connectors

Electronic connectors provide the necessary connections between different components or devices. There are several types of electronic connectors, each designed for specific applications and requirements.

Some of the most common types include:

Board-to-Board Connectors

Board-to-board connectors join two PCBs without cables, using male and female headers. These connectors can be assembled with PCBs via through-hole or surface mount technology. Configuration options include vertical and parallel connections. Mezzanine connectors stack PCBs, while edge connectors join single-sided or double-sided PCB edges.

Board-to-board connectors enable direct PCB connections without cables, ideal for space-constrained systems. These connectors support parallel or perpendicular configurations. When two PCBs are stacked, they use mezzanine connectors.

Board-to-Board Connectors

Wire to Board Connector

Wire-to-board connectors enable wires or cables to connect to PCBs, similar to wire-to-wire interfaces. These connectors primarily use press-fit or solder-type two-piece connections and often share a mating interface with wire-to-wire connectors from the same family.

While wire-to-board connectors have many applications, there’s a trend towards cable-to-board connectors or cable assemblies due to the benefits of IDC technology.

Wire to Board Connector

Wire to Wire Connector

Wire-to-wire connectors join two wires, with one end permanently attached via crimping or insulation displacement contact (IDC). In IDC, an insulated wire is inserted into a slot in a metal beam, where the beam’s sharp edge pierces the insulation, creating a secure metal-to-metal connection.

For discrete wire connections, crimping is generally used. In contrast, for multi-conductor cable terminations, Insulation Displacement Connection (IDC) is typically preferred for better wire management and efficiency. Wire-to-wire connectors come in diverse housing configurations, including rectangular and circular options made from various polymers, and metallic housings mainly used in military applications.

Wire to Wire Connector

Box Header Connectors

Board-to-board connectors are classified based on the type of header utilized. In box headers, the terminals are encased within the header structure. Conversely, in pin headers, the terminals remain exposed.

Terminal Block

A terminal block is a modular insulating component that secures or terminates multiple wires.

It connects several terminals in a linear setup with a conductive metal strip ensuring electrical conduction.

A clamping mechanism retains the wires, which can be oriented horizontally, vertically, or at a 45-degree angle.

These blocks can be mounted on panels or DIN rails for flexible applications.

Terminal Block

USB Connectors

USB, an acronym for Universal Serial Bus, is a standardized interface utilized for both data transfer and the provision of power across various electronic devices. This technology is prevalent in smartphones, computers, and a wide array of consumer electronics.

A USB connector includes a male component that connects to a female USB port, featuring four or more shielded contacts within a plastic strain relief for protection. Its asymmetrical design (except USB-C) ensures proper alignment and connection integrity.

Electronic Connector Mounting

There are several methods for connector mounting, which pertain to the techniques used to attach connector leads to a circuit board. These mounting types include surface mount (SM), through-hole, hanging, cutout, and through-the-board configurations. Although the terms “termination” and “mounting” are often used interchangeably, they refer to separate aspects of the connection process.

The term “mounting” encompasses the entire project, including the attachment, securing, and connecting of a connector. In contrast, “termination” pertains specifically to how the connection is established and can also denote how the connector is affixed at each end.

Mounting Types

Various connectors necessitate distinct mounting techniques, which are contingent upon the specific types of termination leads and connector configurations.

Pin-through-hole: Pin-through-hole (PTH) mounting is employed when the termination leads are affixed to the board by passing them through a pre-drilled hole in the substrate.

Surface mount: Surface mount technology employs contact pads on the printed circuit board to establish connections with the termination leads.

Panel mount: Panel mount is a type of surface mounting where the connector is positioned against an aperture and secured with threads or nuts.

Hanging: For hanging mounts, the connector is affixed to the cable to which it is terminated.

Cutout mount: Cutout mounting entails positioning the connector along the edge of the board to leverage strategic edge placement advantages.

Thru-board mount: The thru-board mount combines cutout and panel mount features. Terminals pass through the board’s holes to be soldered on the same side as their connectors while other terminals are surface-mounted, ensuring a secure and efficient connection system.

Insulation Displacement Connectors

Insulation Displacement Connectors (IDCs) have precision blades that strip wire insulation during insertion. The exposed wire undergoes cold welding with the connector terminal, creating a strong, reliable connection. This method is often used for ribbon cable connectors, telephone, and network plugs.

Importance of Choosing the Right Connector for Your Industry

Connectors provide a means of establishing and maintaining a communication or power connection between different devices or systems. There are several factors to consider when selecting a connector, including durability, compatibility, and performance requirements.

Durability is a key consideration, especially in industries where connectors are exposed to harsh environmental conditions such as extreme temperatures, humidity, or chemicals. It is critical to select connectors that can withstand these conditions to prevent interruptions in operation.

Compatibility is another important factor to consider when selecting a connector for your industry. It is critical to ensure that the connector is compatible with the device or system to which it is connected, as using an incompatible connector may cause equipment failure or damage.

Performance requirements also play a role in selecting the right connector for your industry. Different industries have different performance requirements, such as high-speed data transmission, high power handling, or electromagnetic interference shielding. It is critical to select connectors that meet these specific performance requirements to ensure optimal functionality and reliability.

Considerations When Selecting Electronic Connectors

Electronic connectors are an essential component in any electronic device. When selecting an electronic connector, several considerations should be kept in mind to ensure its compatibility and functionality. Some of these considerations include:

Connector Type: There are various types of electronic connectors available. The type of connector required depends on the specific application and requirements of the electronic device.

Connector Size and Shape: The size and shape of the connector should be compatible with the device and other components it will be connected to.

Connector Specifications: It is important to consider the electrical specifications of the connector, such as voltage rating, current rating, and frequency range.

Durability and Reliability: Electronic connectors should be durable and reliable to withstand frequent use and environmental factors. Factors such as operating temperature range, resistance to vibration and shock, and IP rating should be considered when selecting connectors.

Signal Integrity: For applications that require high-speed data transmission, such as computers or communication equipment, it is important to consider the signal integrity of the connector. Factors such as impedance matching, crosstalk, and signal loss should be considered.

Connector Termination: Depending on the application, the connector may have different termination options, such as solder, crimp, or screw terminals. The termination method selected should be suitable for the specific application and installation requirements.

Cost: Cost is an important factor to consider when selecting an electronic connector, as it can vary greatly depending on the type and specification of the connector. It is important to balance cost considerations with the performance and reliability required of the connector.

Conclusion

Understanding the different types and functions of connectors can greatly improve efficiency and performance in a wide range of industries. A list of all available connectors can be found here. If you require a specific connector, please contact us and we will help you.

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