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| From: | |
| Date: | Sat, 11 Jan 1997 12:42:46 +0100 |
| Content-Type: | text/plain |
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At 10:09 10/01/97, you wrote:
>
>Can anyone help?
>We are using kester 951 low residue flux in a dual wave solder process for
>mixed technology.
> What would you recommend for a temperature profile and what solder temp. is
>recommended for this product.
>we have been experiencing skips or no solders on the SMT components.
>Any help would be greatly appreciated.
>
=========================================================================
Dear Raymond,
It seems that you are talking about a low residual flux.
Don't worry about it,
Try to preheat at 120ºC in the circuit. and solder at wave bath temperature
arround 240-250ºC.
If you have and old machine, prepared only for colophone fluxes, and you
can't get the 120ºC required. Try to improvise a close tunnel in the
preheating zone, in order to increase this temperature, due to refractation.
If you need more information, please contact me by E-mail or Fax (here enclosed)
Best regards
- -
( O O )
========oOOo===\o/===oOOo=========
= ANTONI CHERTA =
= E-mail: [log in to unmask] =
= Fax: +34.3.274.00.80 =
= BARCELONA =
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