Electronics Forum | Fri Aug 13 16:54:20 EDT 2004 | davef
If the terminations on your components are not barrier plated, you must be very careful about the amount of time you stay above liquidous. As you'd expect, longer is not better. The longer you stay at liquidous, the more of the component terminatio
Electronics Forum | Tue Aug 30 09:24:08 EDT 2005 | Slaine
we manufacture a range of ceramic parts that have silver termination,there is already a small leaching problem (absorption of the termination by the solder in liquid form)with Sn62 that we live with, having to implement unleaded solder they are norma
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 | Mon Feb 18 03:40:04 EST 2008 | akareti
Hi everybody, I found a defect varistor 0603 Tombstone and poor welting when we use component that terminal is Silver palladium (Ag/ Pd) with Leaded solder paste (63/37). Then we change alternative component that terminal is Ni/ Sn the result not fou
Electronics Forum | Wed Apr 18 08:14:20 EDT 2007 | davef
Silver palladium termination * AgPd-terminated capacitors are designed for conductive adhesion. Reflow or wave soldering is not recommended. [EPCOS Multilayer ceramic capacitors, Soldering directions, October 2006] * CONDUCTIVE EPOXY BONDING. Epoxy c
Electronics Forum | Thu Dec 16 16:28:51 EST 2004 | Indy
Hi, We are using Sn/3.0Ag/0.5Cu solder paste on Pd/Ag pad metallization in one of our application. Could someone provide me information on the following: 1. How bad is the Leaching of Ag in SAC alloy and how it can be mitigated. 2. During reflow so
Electronics Forum | Tue Aug 24 13:45:17 EDT 2004 | Indy
Hi, I am trying to assemble a LTCC component with Pd/Ag surface finish on to Sn/Pb/Ag solder and Sn/Ag/Cu solder. I am passing it through a reflow. I have observed poor wettability at the solder-pad joint. Does anyone have information regarding th
Electronics Forum | Tue Aug 24 13:47:14 EDT 2004 | Indy
Hi, I am trying to assemble a LTCC component with Pd/Ag surface finish on to Sn/Pb/Ag solder and Sn/Ag/Cu solder. I am passing it through a reflow. I have observed poor wettability at the solder-pad joint. Does anyone have information regarding th
Electronics Forum | Tue Aug 24 13:47:16 EDT 2004 | Indy
Hi, I am trying to assemble a LTCC component with Pd/Ag surface finish on to Sn/Pb/Ag solder and Sn/Ag/Cu solder. I am passing it through a reflow. I have observed poor wettability at the solder-pad joint. Does anyone have information regarding th
Electronics Forum | Tue Oct 23 07:03:52 EDT 2007 | davef
We're not really sure. Usually when solder leaves the pads and wicks-up a component lead, it means the component lead is much warmer than the pad on the board. This is the direction we would have taken this if we hadn't taken the AgPd / conductive e
