LF Wave Solder - SN100C or ????| 16 February, 2012
We have been using a selective solder system for all of our automated LF through hole processing to this point. It has served us well but volumes are increasing and we are getting ready to pull the trigger on a full size wave machine to handle the larger numbers.
We have been using SN100C in our selective equipment (only a 30 lb pot) and now need to determine if we are sure enough about SN100C to fill a 1500 lb pot full of the stuff. We have been very happy with the soldering results for this alloy.
We have no customer requirements to use SN100C so there are no real limitations in selecting another alloy. Cost is obviously a major factor in all of this.
I'd like to hear from people who are using SN100C in a full size wave and the pros and cons you've encountered. Would also like to hear from those using something different and why.
> We use succesfully SN100C on ERSA330 for about > 2-3years. > > Pros: > > - price, - less dross > comparing to SAC305, - some ppl say better > mechanical durability comparing to SAC305 > (depends who pay for "independent" > studies) > > Cons: > > - higher melting temp so > rework is more time consuming, > > If you can keep > your process well you will be satisfied with > SN100C
We also using SN100C in Ersa Powerflow wave machine.
Beside the comment from Andrzej, the copper level also one of process control points for SN100C. It much more critical compare to SAC.