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ERSA has introduced Ultrasonic wave soldering machine which doesnot require
flux for soldering.
Multicore has introduced a flux on which conformal coating can be done
without cleaning the boards.
regards
Sunil Gupta
"Hinners Hans CIV WRALC/LYPME" <[log in to unmask]> on 27-07-99
02:01:46
Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
to "Hinners Hans CIV WRALC/LYPME" <[log in to unmask]>
To: [log in to unmask]
cc: (bcc: Sunil Gupta/TTL)
Subject: Re: [TN] No clean flux residue
Hi Ivan and All,
As you have discovered there really isn't a 'no clean' flux (at least with
'special' cases, yours - Probe; mine - Conformal Coating). Somebody
correct
me if I'm wrong but you have a couple of choices - clean the probes, clean
the boards, or change the equipment/process (i.e.. change the way you test
and/or solder $$$).
The question I have for the group: Would soldering in an inert environment
remove the need for flux all together? I would swear I have seen that
mentioned somewhere recently (where o where? - was it PC FAB or maybe
Precision Cleaning).
Hans
Air Force Material Command - We keep them flying!
~~~~~~~~
Hans M. Hinners WR-ALC/LYPME Bldg. 640
Materials Engineer 380 Second Street,
Suite 104
Manufacturing Eng. Sec. Robins AFB GA 31098-1638
912-926-1970 (Voice) 468 - 1970 (DSN) 912-926-7974 (Fax)
[log in to unmask]
> Hello Technetters:
> Being new to the list, I do not know if this issue has been discussed in
> the
> past, so here goes. What can be done to minimize/eliminate the residue
> left by
> the no clean fluxes on the PCB's? We currently have a big issue with
> residue not
> allowing our test pin probes to make contact. We have implemented
cleaning
> the
> probes on a regular basis, but I want to eliminate the issue altogether.
> If this
> has been discussed, please point me in the right direction (archived
> responses).
> If not, I would really appreciate your help.
> Ivan Barrios
> Process Engineer
> Conexant Systems
> El Paso, TX,
>
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