Electronics Forum | Thu Oct 18 18:39:15 EDT 2001 | davef
Responding to your questions ... RELIABILITY OF 1% SILVER SOLDER PASTE: It�s as good as the next solder paste, all other things the same. Look at your back articles by Jennie Hang in SMT magazine. I want to say she wrote an article on the topic i
Electronics Forum | Tue Nov 29 21:51:37 EST 2005 | wmeyers
I have a pin and sleeve assembly that utilizes a fusible link type of solder, Bi, Cd, Pb and Sn alloy. The pin is gold plated, the sleeve is copper alloy 725. I have had sporadic success with wetting of the sleeve during the reflow process. To improv
Electronics Forum | Fri Apr 01 18:41:09 EST 2005 | KEN
Agreed. In my experience you will not wet solder to: Platinum Iron Constantine Tungsten Carbide titanium Chromalloy allomega alloy 303, 304 ...and the list goes on and on. You will either need to weld or braze. These are high temperature prcesses
Electronics Forum | Thu Mar 31 19:52:50 EST 2005 | davef
We agree with Russ that you're talking palladium instead of platinum. Your wetting problem likely is not the Pd-Ag surface layers, but the underlying metal or nickel to which you need to wet. Either a base metal is: * Contaminated and poorly wettabl
Electronics Forum | Fri Aug 30 16:25:21 EDT 2002 | davef
Imm silver holds-up to multiple thermal cycles very well. The things, we guess, are happening to make imm silver tough to solder after heating and sitting are: * Oxidation of the silver. * Reduction of the co-deposited organic anti-tarnish [used in
Electronics Forum | Tue Apr 13 17:44:29 EDT 1999 | Christopher Lampron
| We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have to
Electronics Forum | Wed Dec 24 15:28:17 EST 2008 | edmentzer
We use SN100C for wave soldering and hand Lead free soldering and have had very good results. The wire cored solder for hand soldering flows good and makes very good solder joints. The SN100C in the wave solder machine also works very good. We use
Electronics Forum | Tue Aug 30 12:49:59 EDT 2005 | Ted
Slaine, We use a Pd/Ag thickfilm paste. Because of the leaching we had to start using solder pastes that have silver in it. For RoHS, we are using a solder paste with an alloy of Sn95/Ag05. We also have to double print the thickfilm pastes. I h
Electronics Forum | Thu Jun 08 07:56:34 EDT 2017 | jkitt84
In an excellent previous thread davef mentions brass should be plated prior to soldering to prevent zinc leaching from the brass. It is reported once the zinc leaches, the joint is weak. He recommends copper or nickel plating. Would silver plating w
Electronics Forum | Sun Mar 31 10:03:25 EST 2002 | Bob
Cheers Dave, to answer some of your questions. � The component lead is copper with a tin / lead coating. The pads are standard Copper / Nickel / Gold. � The solder is standard Tin / Lead / Silver (2%) We have a lab that can determine the composition
