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Wave Soldering Defects - Flux Residues
Flux residues visible on the board are more common
due to the reduction in the use of cleaning in the industry. Over
75% of companies in Europe use no clean low residue materials.
With the reliability of no clean being demonstrated in automotive
products, the number of cleaning processes will continue to decline.
In Figure 1, the residues are either
a result of the formulation of the flux or due to poor process
conditions. Many
no clean materials rely on the correct pre-heat temperature helping
to minimise the residues left on the board. Wave contact time
may also affect the residues left on the board. Discussion with
the
flux supplier should provide the correct process parameters.  |
| Figure 1: The flux residues here could haev bene caused
by the formulation of the flux or by poor process conditions. |
Wave Soldering Defects:
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Flux Residues |
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