Electronics Forum | Wed Jun 29 14:36:11 EDT 2005 | Steve
A customer of mine is using Chemtronics (Circuit Works) CW3300 Overcoat pen. This is an acrylic conformal coating. It cures at Room temperature. They need something similar that can be UV cured in a pen form. Any suggestions?
Electronics Forum | Fri Jul 01 20:12:16 EDT 2005 | Tom B
Steve, We use that Circuit Works pen as well! You can purchase a UV cure then download it to an opaque syringe or bottle. Use a small EFD or similar luer lock tip and dispense where needed. Tom
Electronics Forum | Fri Jul 08 09:14:49 EDT 2005 | Jason Fullerton
I've tested boards with SN100C HAL finish, and wetting to the PCB finish was poor at best, using a no clean SAC305 paste.
Electronics Forum | Fri Jul 08 10:13:15 EDT 2005 | fctassembly
Hi Jason, Did the SAC paste wet other board finishes adequately? I have seen no issues to date with solderability of SN100CL HASL boards with our No Clean pastes. Regards, Bob
Electronics Forum | Mon Jul 11 23:13:28 EDT 2005 | Chris Ong
There are other solder around in the market. Have you all visited the Asahi solder for low costing compared to other solder alloy. Website data :www.asahisolder.com
Electronics Forum | Tue Jul 12 00:13:39 EDT 2005 | fctassembly
Sorry to contradict your suggestion but the Asahi 300 series alloys contain indium which is both very expensive and has very limited availability.
Electronics Forum | Tue Jul 12 03:58:46 EDT 2005 | Chris Ong
Hi Bob, I heard that they have low temperature solder that is able to tackle heat sensitive component. Some of my industrial friend also mentioned that they some sort of low cost material alloy -SCS7?? Is that true? Thanks Chris
Electronics Forum | Thu Jul 14 03:01:37 EDT 2005 | fctassembly
Chris, The Asahi SCS7 is Asahi's attempt at copying the SN100C and is a tin/copper/silicon alloy that melts at 227C so no, it is not a low temperature lead free alloy.
Electronics Forum | Fri Jul 15 13:36:07 EDT 2005 | Brian
If you do SMT with an SAC alloy, and the Wave Solder with SN100C, what is the impact of accidentally reworking the through hole parts with an SAC alloy wire solder? Or reworking the SAC alloy with an SN100C wire solder? Brian
Electronics Forum | Wed Jul 27 09:47:01 EDT 2005 | GCampbell
CEMCO Uk have done testing using SACX0307, SAC305 and Sn/Cu/Ni. The copper dissolution tests (report available) conducted at CEMCO showed that the lowest copper erosion rate was achieved by SACX0307. Regards Gerry
