Types of Connectors and Their Uses

Connector PCB

Connectors are devices that join circuit boards together. They may be surface mount, through hole, or flexible. While the types of connectors can differ, there are some fundamental rules to follow. Learn how to choose the correct connector for your application. Here are some common types of connectors and their uses. When selecting a connector, make sure you know how to connect it to the PCB.

Surface mount

Surface mount connector PCBs are those with mounting pads and leads on the same side of the PCB as the connector. They can be soldered by hand, re-flow, or wave soldering. These connectors may also be cable-mounted. There are a number of differences between the two types of connectors.

When deciding between two types of connectors, it is important to remember to consider the application. Some types may require voltage, current, or ingress protection. These may not be known beforehand. Additionally, the connector’s termination should be considered carefully. For example, if the connector will be exposed to chemicals, it may need to be modified.

Surface mount connector PCBs are smaller than their through-hole counterparts. This means that manufacturers can fit more components on a single PCB. Combined with the smaller dimensions, these connectors allow manufacturers to manufacture products with higher circuit densities. This means smaller machines, smaller circuit boards, and smaller subassemblies.

The most reliable surface mount connectors are those that feature precision formed pin-and-socket contacts. This type of contact is the best solution for today’s demanding design requirements. Precision formed pin-and-socket connectors are often used in ruggedized equipment, medical devices, and down-hole tools.

Another type of Surface mount connector is the Throughboard connector. This type is generally used for connectors in electronic devices. This type of connector is generally high-density, and allows for low stacking height. Some models have additional features, such as a mounting boss and additional solder pads. The mounting pattern and other features are important for certain applications.

BUCHANAN WireMate Surface Mount TB series has two-piece pluggable solutions with Surface Mount Technology. These connectors are available in two to twelve positions and are compatible with wire gauges from 30 to 16 AWG. These connectors are ideal for applications in elevators, HVAC equipment, and industrial controls.

Through hole

The connection between the two sides of a connector must be secure. This is achieved through the use of a through hole on a connector PCB. There are several advantages of using this connector type. Firstly, it is stronger and lasts longer than a surface-mount or edge-mounted connector. Secondly, it can be used in hostile or sedate environments. The choice of connector depends on the application and should be based on considerations such as environmental ingress, kinetic shock, and shielding. Corrosion and oils should also be considered.

When designing a through-hole connector PCB, it is important to use proper drafting and modeling techniques. The first step is to model the component footprint using the appropriate design rules and constraints. The next step is to use the appropriate data sheets for the component. Once you have modeled the part footprint, you should make sure to include all necessary parameters such as keepout zones, clearances, and component heights in your design.

Moreover, it is possible to automate the process of placing the parts on the PCB. In this way, the manufacturer doesn’t have to spend money on creating new solder stencils each time there’s a revision. Moreover, through-hole components are more reliable and durable.

A through-hole connector PCB is also cheaper than a surface-mounted one. This is because the connection between the two devices is much stronger than when using SMT connectors. Additionally, through-hole connectors are largely resistant to pressure and shock. Furthermore, they are easier to install than their SMT counterparts.

As a result, manufacturers have deferred the replacement of through-hole components because they are durable and reliable. Furthermore, through-hole connectors can be inspected more reliably using X-ray inspection.


When designing flexible connector PCBs, one of the first things to consider is the flex circuit type. Different flex circuit types have different number of layers and surface finishes. Moreover, different flex circuits can be made of different materials. Some of the most common materials used for flex PCBs are tin, silver, and gold.

Flexible connector PCBs are used in automobiles, automation, entertainment, navigation, and other next-generation electronics. Flexible PCB connectors are also used in cameras, desktop computers, and tablet devices. Their micro-torque ranges from 1.0 mm to 0.50 mm. These connectors are also used in commercial and industrial devices, including automotive electronics and robotics.

The flexibility of flexible PCBs allows designers to create more complex shapes and reduce the size of their devices. This makes them ideal for many applications and allows them to be more lightweight and durable. Additionally, they can be etched accurately and reliably. In some applications, flexible PCBs can replace ribbon connectors and conventional wiring harnesses.

The process of flexible PCB manufacture begins with a detailed evaluation of the customer’s requirement. A team of engineers analyzes the company’s production capabilities and technical requirements. After that, materials preparation starts. The engineers process the customer’s CAD structure drawing, Gerber data, and other engineering documents.

Flexible circuits can be single or double-sided and can have one conductive layer and one or more flexible layers. The outer layers are typically covered with a polyimide layer. The layers can be connected with a copper-plated through-hole or blind vias.

Alligator clip

The Alligator clip is a common type of connector used in electronics. These clips are spring loaded and connect wires to circuit boards and connector pins. They have the advantage of connecting bare wires without removing the insulation. In addition to electronics, alligator clips are popular in the medical and dental fields.

The Alligator clip is also used to connect the circuit with a 9V battery. The battery has a positive and negative end that plugs into the Alligator connector. This connector is commonly used in project-based electronics. Its positive end is positioned in the center of the battery, and its negative end is positioned on the Alligator clip.

Alligator clips are useful for temporary connections, but they can also cause short circuits. A more permanent option is an IC clip. These connectors are more expensive than banana clips. They are best for use in troubleshooting applications. They can be installed on veroboard, and can be connected to the PSU’s output.


The RITS Connector PCB has been designed to meet the demands of industrial applications. It features two contact points and a high-density 2.0-mm centerline. The compact design and high-quality features make it ideal for low-power I/O applications in harsh environments. The chisel-press contact termination ensures a high retention force on the cable, reducing installation time by up to 80%. The RITS Connector PCB also features a unique locking lever that makes an audible click to ensure secure connection.

Unlike standard IDC connectors, RITS connectors have two points of contact, providing greater contact reliability. The cable retention mechanism on the contact holds the wire with a higher retention force than traditional IDC connectors. Additionally, RITS connectors feature semi-transparent housings that facilitate visual inspection. They also feature increased electrical reliability.