[sdiy] mixing solder types

[Seb Francis]

It's not the solder that minds being washed, it's the mechanical 
things.  Why not just use a no-clean solder throughout.  That is the 
point of no-clean that you don't need to clean it :)

It will leave a clear, non corrosive, electrically inert residue.  I use 
no-clean flux for fairly high-frequency mixed signal designs with very 
fine pitch surface mount components, and have never had a problem 
electrically (and I use lots of flux for soldering surface mount).

Seb


Jason Proctor wrote:
> eyup,
>
> usually when doing projects i like to do them the MOTM way, which is 
> to say use solder with a water-washable flux for the resistors, 
> diodes, caps, ICs etc, then switch to a regular type for the 
> mechanicals and wiring etc. i really like the results, the boards look 
> great.
>
> i just started building a x0xb0x. now usually i'd completely populate 
> the board with the washable, do a bit of testing, then complete with 
> the no-clean. however, this is a complex project with lots of rare 
> parts, and the instros definitely recommend testing individual modules 
> of the circuit as you go. unfortunately it's necessary to install some 
> pots etc in order to do this.
>
> so i'm looking at a choice between doing it all with the fluxy stuff, 
> or going the whole hog and risking damaging something rare if i screw 
> up somewhere.
>
> third option -- is there a type of solder i can use for the 
> mechanicals that doesn't mind being washed with water? that would get 
> the best of both worlds most likely.
>
> ta muchly
> j
>
>
>
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