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| Ask the Experts |
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October 20, 2010 - Updated
October 18, 2010 - Originally Posted
Humidity Outside Specified Limits
I am aware of the suggested humidity levels for an electronics assembly facility. Do the same limits apply within a 100,000 clean room? Besides ESD concerns and control of solder paste, what other operations or processes within an electronics assembly facility are sensitive to relative humidity outside of specified limits?
M. S.
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| Expert Panel Responses |
For ESD requirements the humidity level shell be above 20%, better 40 %. For ESD product qualification is 12 % required. Compare the standards IEC 61340-5-1 and IEC 61340-5-2 from 2008. An upper level is not required, this level depend from other process steps.
Hartmut Berndt
President, B.E.STAT group
Mr. Burndt has been in Electronics & Semiconductor Technology since 1980 and work in the area of Electrostatic (ESD) and electronic devices. He is President of the B.E.STAT group (Germany); expert in ESD audits, trainings, failure analysis and ESD control programs.
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