Lee Wilmot has 20+ years doing EHS work in the PCB/PCBA industries, including environmental compliance, OSHA compliance, workers compensation, material content declarations, RoHS & REACH compliance. Active on IPC EHS committee and c-chaired committees on IPC-1331, J-STD-609A on labeling & marking, IPC-1758 on packaging and others.
Lee Wilmot has submitted responses to the following questions.
RoHS Bill of Materials Crosscheck
J-STD-609A requires the labeling of component maximumtemperatures. Here’s an example from that standard. You should contact your BGAsupplier re: labeling ...
Some non-halogenated solvents that can be used for degreasing and/or defluxing PCAs and components include d-limonene and n-methylpyrrolidone. ...
Challenging Cleaning Problem
My expertise is EHS, not electronic design or assembly. However, there is a cleaning method that may be used for ...
Cause of Green/Blue Oxide Buildup
Bluecopper compounds include copper hydroxide (Cu(OH)2)- light blue, which canconvert to copper carbonate (greenish); copper nitrate (Cu(NO3)2) and coppersulfate (CuSO4).Greencopper ...
Deionized Water Sample Testing
I don't have direct DI sampling experience, but do know that water samples forjust pH measurement can change over time ...