Electronics Forum | Thu Jun 03 18:10:28 EDT 2004 | g2garyg2
It sounds like you will need to pre-heat the aluminum beofre using even a laser to solder this type of application. While lasers are great for many applications, especially those that have challenging keep out areas, thermal mass issues (with approp
Electronics Forum | Mon Aug 24 17:34:18 EDT 2009 | hegemon
DRS22 is not really comparable to the DRS25 due to a huge difference in the bottom heat technology used on those machines. If the PCBs are light enough the huge power of the DRS25 bottom heater is likely not needed, though. I would ask about your pr
Electronics Forum | Fri Sep 17 09:54:40 EDT 1999 | Brian
| | | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a
Electronics Forum | Fri Sep 17 10:09:17 EDT 1999 | Earl Moon
| | | | We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However,
Electronics Forum | Thu Aug 06 09:51:20 EDT 1998 | Bob Willis
This text may be of interest to any one with tin lead spots Guide to Solder Spots - A New Plague in Manufacture ? So what are solder spots ? They appear to be the next big problem in modern reflow assembly in fact in any process that involves solder
Electronics Forum | Wed May 16 15:40:56 EDT 2012 | davef
Here's some notes from a Bob Willis presentation Assembly of Flexible Circuits with Lead-Free Solder Alloy [Bob Willis leadfreesoldering.com] * Flexible Circuit Construction ** Base Material - 0.05mm Copper 18/18 um ESPANEX from Holders Technologies
Electronics Forum | Tue Feb 19 19:36:21 EST 2002 | davef
You weren�t clear but I assume the problem is not widely distributed and affects only a few parts on each board. Do this trick: * Cut a ~1� piece of fairly serious wire, like 18 or 12 AWG. * Strip the insulation. * Gear-up with gloves, glasses, and
Electronics Forum | Mon Mar 09 15:03:41 EDT 2020 | davef
snip from https://hackaday.com/2020/03/09/pcb-finishes-hack-chat PCB FINISHES HACK CHAT No comments by: Dan Maloney March 9, 2020 Join us on Wednesday, March 11 at noon Pacific for the PCB Finishes Hack Chat [https://hackaday.io/event/169956-pcb-
Electronics Forum | Tue May 02 12:07:26 EDT 2006 | Sheldon Stewart (Process Engineer)
I am curious if everyone else is seeing the same dramatically reduced tip life with lead-free that I am? We have purchased new irones with controlled temperatures up to 800F. We are doing more hand soldering on our lead-free at the present while wait
Electronics Forum | Tue Dec 16 15:43:26 EST 2008 | fctassembly
Converting your machine from lead to lead-free can be performed in a few steps: 1)Ensure the solder bath is up to temperature 2)De-dross the solder bath 3)Remove pumps/ flow ducts; etc. clean very well- set aside 4)Purge leaded solder 5)Remove as muc
