Solder pin
A soldering pin is a relatively short pin made of conductive and solderable material, which is used to create a conductive connection between the circuit board and a component or as a component in through-hole assembly (= THT technology = through-hole technology). Typically the solder pins are round, but there are also square pins.
The surface of the soldering pins consists of a material that is easy to solder and also serves as a protection against corrosion. Typically the surface is made of tin, sometimes nickel or silver. Furthermore, depending on the design, only the directly solderable area of the soldering pin can partially consist of a solderable surface coating.
In the case of lightweight components, solder pins are also used for mechanical fastening on the circuit board.
Soldering pins are available individually for fastening in the circuit board, they can be used, for example, as soldering posts . But there are also components that have solder pins as connections instead of wires. Depending on the design, the soldering pins are either pressed into the electrical components or encapsulated with the plastic material during manufacture of the housing. These connections are intended for mounting on printed circuit boards. The connection to the circuit board is made by soldering.
Alternatively, the soldering pin is also called a "print connection". The name goes back to the fact that circuit boards are also known as printed circuits . On the other hand, soldering lugs and soldering strips serve as a connection for free wiring.
presentation
The solder pins are often not shown in circuit diagrams, but in the wiring diagram, on assembly plans and in parts lists (provided they are separate components).
literature
- Reinard J. Klein Wassink: Soft soldering in electronics . 2nd Edition. Eugen G. Leuze, Saulgau 1991, ISBN 3-87480-066-0 .
- Wolfgang Scheel (Hrsg.): Assembly technology of electronics . Verlag Technik et al., Berlin et al. 1997, ISBN 3-341-01100-5 .