Introduction of PCB printed circuit board terminals

Screw-connected printed circuit board terminals have always been an important part of the electronics industry and are now an important component of printed circuit boards. Its structured design combines the convenience of wiring and the firmness of screw connections.

- The spring-connected printed circuit board terminal is divided into a pull-spring connection and a butterfly spring connection. The pull-back spring terminal and the screw terminal can be replaced each other, which greatly increases the flexibility.

- IDC stripping quick-connect terminals enable quick connections to insulated conductor wires without the use of any tools. Pull the assist lever to push the wire into the knife edge and cut off the insulation to achieve a gas-tight connection. This type of wiring saves up to 60% of wiring time and is certified for use in Ethernet cabling (Category 5).

Regardless of the type of connection terminal, they have the following advantages:

1. Large wiring capacity, can adapt to various wiring requirements.

2. The wire clamping body and the welding pin are mechanically decoupled, that is, since the wire clamping body and the welding pin are not integrated, the torque when the screw is tightened is not transmitted to the soldering point.

3. The welding pin has a quadrangular shape and the end portion shrinks. When inserting the soldering hole, it can prevent random rotation. The soldering solution is dissolved in the soldering hole.

4. The welding pin is a copper alloy, and the welding pin has no dirt to ensure the long-term reliability of the welding.

5. Tinned solder pins for easy soldering.

6. With cooling channel.

7. The end of the solder pin shrinks and is easy to install.

Users can not only select different parameters, such as needle position, stitch length, etc., but also different wiring directions. In practical applications, the layout of components, such as the location of the PCB in the enclosure, often limits printed circuit board terminals. Printed circuit board terminals that offer a variety of different wiring directions are undoubtedly of practical importance: horizontal, vertical, beveled, and front. The more choices you provide, the more you can help with the actual operation.

Printed circuit board terminals can even provide multi-layer wiring (1 to 4 layers) terminals (MKDS... to MK4DS...). The arrangement between the layers is very compact and is offset by a half stitch length in the vertical direction. This terminal is fully compliant with the compact, space-saving design requirements.

Screw-connected terminals are compatible with spring-connected terminals. The so-called compatibility means that the two can be interchanged without changing the layout of the printed circuit board. This greatly increases the adaptability of the product and greatly reduces the cost.

In order to meet the requirements of the new electronic assembly process (reflow method, solderless installation), Phoenix has developed a series of SMD/THR and press-fit components, including printed circuit board terminals MKDS 1-SMD, EMKDS... and housing Special components made of high temperature resistant insulation. Several models are available in a single plate to accommodate the requirements of mechanized assembly.