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Subject:	Re: Flux Controls
From:	Ken Patel <[log in to unmask]>
Reply To:	TechNet E-Mail Forum.
Date:	Fri, 14 Dec 2001 14:08:50 -0800
Content-Type:	text/plain
Parts/Attachments:	text/plain (44 lines)

I think there is a typo. QA should be OA (Organic Acids) based flux, very strong. Need very
good control in storage and while using on the board. If left on the board, it will eat away
the boards slowly.

Color coding is the best option. Don't allow flux chemistry to get mixed. People will love OA
flux and you may find some operators want to use OA instead of RMA as OA flux allows fast
wetting because of the better cleaning of the surface. Thorough cleaning should be mandatory
preferably in the washer than using a DI water & a brush.

re,
Ken Patel

[log in to unmask] wrote:

> Hello Technetters
>
> I need help. Currently I have only RMA fluxes in wave soldering and hand
> soldering. We are planning to use type QA for a new customer.  I am
> concerned about what kind of controls I should have in place so the right
> flux is used only on the assemblies that it is intended.
>
> Thanks in advance.
> Phil Belliveau
>
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