About D-Sub Connectors…
Although many d-sub connectors look quite similar to one another, they are formed in a variety of different ways. Their wires can be attached to their contacts using solder-bucket contacts, insulation displacement contacts, crimp contacts, PCB pins, and even wire wrap. Some methods are simple while others take practice and a lot of patience.
Let’s start with two of the more basic methods of attaching wires to d-sub connectors: solder-bucket and wire wrap. Solder-bucket contacts (sometimes known as solder-cup contacts) have small cavities into which you insert the stripped wire. The two are then soldered together. Easy enough, right? To make a wire wrap connection, on the other hand, one must wrap solid wire around the square post with a wire wrap tool. Because this method can be modified afterward, it is often used for prototyping.
Next, there are crimp contacts, which (like solder-cup contacts) have cavities into which the stripped wire is inserted. However, in this method, you then use a crimp tool to crush the cavity in several places so that it tightly grips the wire. After that, you insert the crimped contact into the connector and lock it into place.
Insulation displacement contacts (also known as IDCs) utilize a ribbon cable that is forced into sharp tines on the back of the contacts. This method is very fast because it pierces the insulation of all the wires simultaneously. It can be completed by hand or mechanically.
Finally, let’s look at printed circuit board pins (also called PCB pins). These pins are soldered onto a printed circuit board directly, and they are often mounted at a right angle to the PCB so that a cable can be plugged into the edge of the PCB assembly.
All of these methods work well with d-sub connectors, so you can choose your method based on your preferences, your experience, and the connector’s future application.