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Wave Soldering Seminar - October 7
The one-day wave soldering seminar trains participants in process parameters, defect correction, machine maintenance & hands-on PowerWave system use to optimize solder quality and reduce production costs.
SEHO
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| Ask the Experts |
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August 7, 2006 - Updated
July 5, 2007 - Originally Posted
Aqueous cleaner water tested for the Lead
Is it necessary to have the water in your aqueous cleaner tested for the Lead Free banned substances? Mercury, Cadmium, Hexavalent Chromium, Polybrominated Biphenyls (PBB), Polybrominated Diphenyl Ethers (PBDE).
Ray Whittier
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| Expert Panel Responses |
Discharge water from an aqueous cleaning system should be tested for any banned or limit controlled substances. I doubt you will find any of the other RoHs substanses in the discharge water. Most regions are concerned about substances not common in de-fluxing applications. Historically, lead (in solution and in particulate form) was the primary concern. Ph can be a concern in some regions. Consult with your local regulators to be sure as specific toxic "deal-breakers" vary from city to city.
Mike Konrad
President
Aqueous Technologies
Mr. Konrad has been in the electronic assembly equipment industry since 1985. He is founder and CEO of Aqueous Technologies Corporation, a manufacturer of automatic de-fluxing equipment, chemicals, and cleanliness testing systems.
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The "Fried Egg" Effect in Soldering
Burnt-on flux residue that is visible on the solder mask of PCBs after improper reflow settings produces significant challenges to the reliability of finished boards.
KYZEN
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