Charles,

The over spray flux may not be exposed to enough heat to "activate" the chemistry.
This residual "raw" flux can be very ionic!

David A. Douthit
Manager
LoCan LLC

Charles Caswell wrote:

> If you are using no-clea, and presumably not cleanig, why would a little flux topside be of concern? I do not use no-clean but am inetrested.
> Charles Caswell
>
> -----Original Message-----
> From: David White [mailto:[log in to unmask]]
> Sent: Thursday, May 09, 2002 9:33 AM
> To: [log in to unmask]
> Subject: [TN] Flux on top of PCBs from wave
>
> Technet,
> Is anyone concerned about the over spray of flux on the top of PCB
> assemblies. We use generic pallets in our process, so our PCB's will get
> over spray form the spray fluxer, it has recently been brought up as a
> concern.  We use a no-clean flux (Lonco SLS65).  Does anyone else do this
> also, and if so do you have the same concerns?  The flux can sometimes be
> pretty noticeable. I am in the process of getting Ionic testing done, but
> would like your experiences.
> Dave
>
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