Output wiring can be carried out manually and automatically. Manual assembly is convenient for small batches if the board does not lend itself to automatic assembly, as well as for the final assembly of elements.
Installation of pcb design and development components in an automatic way is carried out using special equipment:
- soldering machines and
- Component installers.
Boards assembled in this way are distinguished by the highest accuracy, reliability, speed, automatic control, low cost, and the ability to mount very small components. The components are connected to the board by the output method by wave soldering or by the selective method. In surface mount, planar components are placed on a conductive pattern on a printed circuit board. This type of assembly takes place in the following sequence:
- Application of solder paste;
- Installation of components on the board;
- Solder paste melting;
To apply the paste, dispensers are used or a stencil is used for mass production. The purpose of the paste is to hold the components when the board is heated before soldering.
Then planar components are installed on the board. This process can be carried out both manually and automatically.
Completely manual assembly does not exclude errors and inaccuracies. Therefore, different levels of automation are used.
In a semi-automatic way, the possibility of managing is reduced, since the assembly of the board is carried out by a specialist on special equipment. In multi-batch production, fully automatic assembly is used.
Mixed mounting makes it possible to use the best lead and planar components to produce a board with advantageous electrical properties. This type of assembly has become very common since lead and surface mounts have become little used in their natural form.