HOW CLEAN IS CLEANAuthor: Graham Naisbitt
Company: Gen3 Systsems Ltd.
Date Published: 10/24/2010 Conference: SMTA International
Meanwhile, others were plotting ways that they could monitor the quality of their production process with specific regard to the presence of ionics (salts) that conspire to cause circuit failure.
They figured that using a blend of alcohol with de-ionised water would be an ideal medium, measuring its conductivity before and after.
Why Alcohol? Because conventional rosin based fluxes used at that time were soluble in alcohol. Why water? Because salt dissolves in water.
So, mix 75% propan-2-ol (IPA) with 25% de-ionised water and use a mixed resin filter (a mixture of Cation, Anion and Chelate) to “strip out” ionics as they pass through the medium.
Members download articles for free:
Not a member yet?
What else do you get when you join SMTA? Read about all of the benefits that go along with membership.
Notice: Sharing of articles is restricted to just your immediate work group. Downloaded papers should not be stored on an external network or shared on the internet.