Electronics Forum | Fri Mar 22 18:16:44 EDT 2013 | vpham
We are trying to use this high-temp solder paste due to a very special process, but we run into tombstones on chip caps, 0402 and 0603. We don't have this problem if we use regular SAC305 solder paste. If you have experience with this type of solde
Electronics Forum | Mon Jul 29 09:27:15 EDT 2013 | charliedci
All of our reflow is with room air, 63/37 and SAC305. I believe nitrogen will get you better looking solder joints (shiny, less grainy under magnification), but per IPC, functionality and strength I don't think there is much difference.
Electronics Forum | Mon Nov 13 18:36:32 EST 2023 | emeto
Your reflow profile should be designed towards the flux in your solder paste. To form a proper inter-metallic layer, you need to reach 20-30C above your melting point and stay in liquidus state for certain amount of time. SAC 105 has 3C difference fr
Electronics Forum | Sun Jul 26 05:56:28 EDT 2015 | spoiltforchoice
http://www.surfacemountprocess.com/solder-paste-printing-process.html this site has some pretty good general advice for the novice. I am in no way affiliated with it and I have no idea as to its eventual commerical aims (if any). ENIG if your produc
Electronics Forum | Tue Jan 11 19:47:58 EST 2011 | sai
Use the Kester solder paste EM828 SAC305. Guarantee good reflow. Peak@250 Reflow@80s Soak@75s.
Electronics Forum | Thu May 13 16:55:51 EDT 2021 | emeto
With Pb-Free HASL you can't use Pb process for sure as the melting point of tin is so much higher than the lead paste process. SAC305 is the most popular compound, unless your assembly requires something else for a specific reason.
Electronics Forum | Fri Nov 09 12:42:08 EST 2007 | wayne123
Smt paste= SAC305 Wave Solder= SN100C no real problems with either of these. good luck
Electronics Forum | Wed Apr 08 16:16:35 EDT 2009 | rkevin
I am looking to use a no clean and want to stick with SAC305 Steve, What would you recommend from Aim ?
Electronics Forum | Thu Nov 23 20:01:05 EST 2017 | myke03o
Hi to all experts, Can anyone advice us what solder alloy to use for thermal cycling products. We are facing a lot of issues using normal solder paste SAC305. After thermal cycling the solder is cracking. Any suggestion is welcome. Thanks in advanc
Electronics Forum | Tue Jun 05 20:46:25 EDT 2007 | rfrog
I, too, have finished qualifying the Amtech paste for a dispensing application. We will be experimenting with the component soldering/stencil printing next. The stuff has proven to provide the best of both the no-clean/low solids and water washable
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