Electronics Forum: silver palladium leaching (Page 7 of 13)

Capacitor

Electronics Forum | Thu Jun 27 08:48:08 EDT 2002 | yngwie

I was approached by the comp. suplier to change the capacitors that I currently used. No change in elect. charateristic, but only on : a) change of palladium to nickel base inner electrode b) outer electrode material i.e. from silver to copper. Que

Palladium Silver surface finish

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

Palladium Silver surface finish

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

Palladium Silver surface finish

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

Palladium poor wetting

Electronics Forum | Tue May 23 09:50:37 EDT 2006 | flipit

They work well in silver conductive epoxy in hybrid applications. They are very poor in no clean applications. They don't work that well in OA solder paste either. Used them once in OA paste and in a nitrogen. They looked just fine. Solder to Pd

Nonwetting Components - why won't components wet to solder?

Electronics Forum | Thu Jan 25 13:20:17 EST 2007 | slthomas

Are you running a lead free process? If not, have you identified these as lead free components? If so, have you increased the temps in your profile to accomodate that? After that, I'd look for a AgPd (silver/palladium) or some other such PITA platin

Solder wick on Ag/Pd termination

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

Your choice among surface finishes

Electronics Forum | Mon Nov 04 07:31:54 EST 2019 | amitthepcbguy

As a manufacturer, I prefer plated nickel gold, electroless nickel immersion gold, immersion silver and palladium. These surface finishes are the best options to replace leaded surface finishes. These surface finishes can withstand higher temperature

Soldering to Gold

Electronics Forum | Thu Sep 16 17:22:16 EDT 1999 | DaveJ

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 recomm

Sn62Pb36Ag2

Electronics Forum | Tue Nov 30 18:02:45 EST 2010 | flipit

62/36/2 is used often in thickfilm hybrid circuits where Pd/Ag conductors are used. The idea is that you saturate the joint with the 2% silver and thus help eliminate the leaching of the silver from the hybrid circuit pads or the component. We mix


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