HASL

HASL

HASL is an acronym that stands for Hot Air Solder Leveling, a type of finish for printed circuit boards (PCB).

Description

The PCB is typically dipped into a bath of molten solder such that all exposed copper surfaces are covered by solder. Excess solder is removed by scraping the PCB with hot air knives.

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

HASL Service Providers

MaskTek: http://www.MaskTek.com


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