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Description / Abstract:
This standard prescribes general requirements for the
classification and characterization of fluxes for high quality
solder interconnections. This standard may be used for quality
control and procurement purposes.
Purpose The purpose of this standard is to
classify and characterize tin/lead and lead-free soldering flux
materials for use in electronic metallurgical interconnections for
printed circuit board assembly. Soldering flux materials include
the following: liquid flux, paste flux, solder paste, solder cream
as well as flux-coated and flux-cored solder wires and preforms. It
is not the intent of this standard to exclude any acceptable flux
or soldering material; however, these materials must produce the
desired electrical and metallurgical interconnection.
The requirements for fluxes are defined in general terms for
standard classification. Appendix B has additional information that
will help users understand some of the requirements of this
standard. In practice, where more stringent requirements are
necessary or other manufacturing processes are used, the user shall
define these as additional requirements.