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Thu, 25 Oct 2001 17:25:20 -0400 |
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<D886DC8708ACD3118A0500606DD5DA63035F930C@DSC_MAIL> |
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CALCE EPRC |
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Hi Cheryl,
There are some recommended maximum chloride levels at csl`s
web page(www.residue.com)
4.5 micrograms per square inch for final assemblies processed
with rosen fluxes
2.5 micrograms per square inch for final assemblies processed
with low solids (no-clean) fluxes
4.5 -5.0 micrograms per square inch for final assemblies
processed with water soluble fluxes
<2.0 micrograms per square inch for a bare board(tin-lead coated)
Rinsing water is one of the source in PWB manufacturing.
Ilknur baylakoglu
On 25 Oct 01, at 16:36, Cheryl White wrote:
> Is there a standard for acceptable levels of chloride on assembled PCBs and
> on bare boards? What sources of chlorides exist in a board fabrication
> process, and in an assembly process?
>
> We are using a no-clean low-solid flux.
>
> Thanks,
> Cheryl White
> Manufacturing Engineering
> DSC Ltd.
> [log in to unmask]
> (905) 760-3000 ext. 7228
>
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Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
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