Lödad

Lödad is a Swedish term that denotes something has been joined by soldering. It functions as the past participle of the verb löda (to solder) and as an adjective used to describe joints, connections, or components created through soldering.

In practical use, a loddad joint typically involves heating a filler metal with a lower melting point than the workpieces and allowing it to flow into gaps by capillary action before it solidifies. This produces a conductive and, depending on materials and flux, sometimes a sealant bond. Lödad connections are common in electronics for circuit-board traces and wire junctions, as well as in plumbing and metalworking for joining copper or other metals.

Materials and processes associated with lödad work have evolved with solder technology. Historically, tin-lead solders were standard, but many regions now prefer lead-free alloys such as tin-silver-copper. Fluxes are often used to improve wetting and prevent oxidation during heating. The quality of a lödad joint depends on factors including cleaning, temperature control, the choice of solder alloy, and the compatibility of the metals involved.

Etymology and usage notes: löda is a native Swedish verb, and lödad is formed by the common suffix -ad to create an adjective meaning “soldered.” The term is widely used in Swedish technical documentation, manuals, and field notes to distinguish soldered joints from mechanically joined or welded connections. In neighboring Scandinavian languages, related forms exist (for example, lodda or loddet), but lödad is specifically Swedish.