Electronics Forum | Tue Aug 15 17:36:29 EDT 2006 | cuculi54986@yahoo.com
Russ, I believe the concern over solders with bismuth in them was that if you did happen to get a little Pb in your solder joint, you could create an alloy that could melt at around 100 degrees C, and that's not all that warm. At least, that's what
Electronics Forum | Tue Oct 03 15:28:24 EDT 2006 | realchunks
No adhesive? Then how about 2 different solder pastes? Higher melting temp for the first side, lower for the second.
Electronics Forum | Mon Jan 22 03:51:16 EST 2007 | Bing
We are using HASL board for Press Fit, without problem in the past until recently. Now we are seeing the solder in the PTH melt and block partially the PTH hole during the reflow. It gives problem when Press Fit. Anyone has advice on this?
Electronics Forum | Tue Jan 23 19:27:28 EST 2007 | asir
which characteristics? An alloy with similar melting points, wetting, shear force, reliabilities, etc. Indium has an article about 77.2Sn/20.0In/2.8Ag, but was wondering is there any other out there.
Electronics Forum | Wed Feb 07 13:44:09 EST 2007 | dsoohoo
After some precursory experimentation, I am planing on employing a form of low melting temp solder for use in reworking some very dense, copper core PCB's, both SMT and THT, which were originally mounted with 63/37 solder. The main problem with the
Electronics Forum | Wed Feb 07 16:40:15 EST 2007 | russ
Be sure that this component temp during operation does not exceed the low temp of the solder. (it has happened in similar situation) Very good idea though Russ
Electronics Forum | Wed Feb 07 17:17:58 EST 2007 | russ
I would not be concerned about the reliability when doing this, I re-read your post and am familiar with this type of process. Russ
Electronics Forum | Wed Feb 07 17:32:15 EST 2007 | davef
If you can't find bismuth wire, use 42Sn58Bi. For more, look here: http://www.mrs.org/s_mrs/bin.asp?CID=2274&DID=48689&DOC=FILE.PDF
Electronics Forum | Fri Feb 23 18:55:39 EST 2007 | greg york
burns and melts in the pot sending the solder golden/yellow and drosses like mad. Lackwerke pieters germany ( not sure on spelling) Lead Free version works well,if you need the exact code I will get for you. cheers greg york
Electronics Forum | Tue Mar 06 21:45:36 EST 2007 | Ivan
Our company is also currently using Viromet 347 in our product. Very good, the low melting point do help in my process.
