From Wikipedia, the free encyclopedia
|This article does not cite any references or sources. (November 2012)|
HASL or hot air solder leveling is a type of finish used on printed circuit boards (PCB).
Advantages of HASL
- Excellent wetting during component soldering
Disadvantages of HASL
- Low planarity makes this surface finish unsuitable for use with fine pitch components
- High thermal stress during process may introduce defects to PCB