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Silver Paladium coating

Vijay

#21805

Silver Pladium coating | 2 October, 2002

Hi, We are using chip components with Silver Pladium coating and finding poor wetting. We are using the water wash solder paste with 2Ag and std. reflow profile. Any suggestion how ti improve the solder wetting for those components. Thanks,

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Vijay

#21806

Silver Paladium coating | 2 October, 2002

Hi, We are using chip components with Silver Paladium coating and finding poor wetting. We are using the water wash solder paste with 2Ag and std. reflow profile. Any suggestion how to improve the solder wetting for those components. Thanks,

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#21809

Silver Pladium coating | 2 October, 2002

We found that a slightly more active flux was all we needed to provide sufficient wetting on the one AgPd part we put down. Unfortunately the paste we tried also slumped terribly, so we nixed that fix. It's a low volume product (50, once every 3 months), so we decided to live with it until we started feeling some real pain.

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#21823

Silver Pladium coating | 3 October, 2002

Your problem is likely not the Pd-Ag surface layers, but the underlying metal to which you need to wet. Either a base metal is: * Contaminated and poorly wettable. OR * A material [eg, Alloy 42 (check with magnet), Kovar, etc] that is inherently difficult to wet.

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Greenman

#21918

Silver Paladium coating | 13 October, 2002

TI found an improvement in solderability on their Ni/Pd lead-finishes by using inert (nitrogen) reflow, but this is an expensive operation for just one part.

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Dumb Blonde

#23431

Silver Paladium coating | 19 February, 2003

This may sound weird, however, I have to ask... what is pladium? I have a jeweler trying to sell me a ring made with pladium. Why can I not find information on it? Will someone please email me with information.

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#23433

Silver Paladium coating | 19 February, 2003

Blondie

I've never heard of using palladium [Pd] for a ring. [Not that that means much.] See, here's a link to discussion on using Pd in jewlery: http://jewelry.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.professionaljeweler.com%2Farchives%2Farticles%2F2000%2Fjun00%2F0600v.html

Now, platinum [Pt] is a very cool material for your ring, much cooler than gold or silver. It is a beautiful metal. [Nothing looks better than platinum and diamonds together.] Dagwood would have to caugh-up serious bucks for a ring like that, but you're worth it!!! [High maintenance chicks are always worth it!!!]

For background on Pd look here: http://www.webelements.com/webelements/elements/text/Pd/key.html

While you're there, drop down one box [Pd and Pt are first cousins] and check-out the Pt also.

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bing

#23523

Silver Paladium coating | 26 February, 2003

Try TI's website. They have almost completely phased in the use of Paladium on all of their IC's. Their website has many useful technical papers on Paladium.

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