PCB Cleanliness Specifications and Limits
Residues are a common part of circuit board assemblies, but the presence of certain residues or high concentrations of others can lead to field failures.
Foresite, Inc. has determined specifications and limits to define whether a board is considered "clean" or "dirty," and whether the presence of those residues, in those concentrations, can potentially lead to failure.
We've developed these guidelines over 20 years of study of electronics field failures - our PCB cleanliness limits are used throughout the industry.
Download the specs so you know:
Implications of the presence of certain residues
Which residues are considered dirty in any quantity
The limits to which some residues can be present before considered dirty
These cleanliness specifications and limits are vital for producing reliable electronics.