Electronics Forum: plating tin (Page 1 of 43)

FST Dexcoat White tin plating

Electronics Forum | Sun Dec 13 08:49:15 EST 1998 | Ron Costa

Has anyone had any experience with using this alternative plating process? Some board houses are pushing toward this plating. Is there any long term data on this process? Any problems experienced with smt and thru-hole? I've heard tin whiskers to be

Re: FST Dexcoat White tin plating

Electronics Forum | Mon Dec 14 10:53:10 EST 1998 | Earl Moon

| Has anyone had any experience with using this alternative plating process? Some board houses are pushing toward this plating. Is there any long term data on this process? Any problems experienced with smt and thru-hole? I've heard tin whiskers to b

Using parts with Tin Bismuth plating in tin lead soldering

Electronics Forum | Mon Dec 12 14:04:33 EST 2005 | craigj

Hi All was wondering is there anything I should be aware of or look out for if using parts with SnBi (Pb free) lead plating with Sn/Pb/Ag solder paste? I was always lead to believe that mixng lead and bismuth caused problems or are the bismuth levels

Using parts with Tin Bismuth plating in tin lead soldering

Electronics Forum | Mon Dec 12 15:57:58 EST 2005 | Samir Nagaheenanajar

4% of the alloy), there is a ternerary phase (not sure if i spelled that right) where the melting point of the alloy is MUCH less than, say, SAC305's. Sn-Bi has also been associated with...... none other than Tin Whiskers. There are some in the in

Using parts with Tin Bismuth plating in tin lead soldering

Electronics Forum | Tue Dec 13 09:15:56 EST 2005 | Samir Nagaheenanajar

5% Bi results in less plasticity * Formation of low temperature (ternerary phases) not detected. I don't advocate the use of Bismuth, per se, but rather I'm just relaying info. that I learned this from a Lead-Free seminar that I attended at Riyadh

Using parts with Tin Bismuth plating in tin lead soldering

Electronics Forum | Tue Dec 13 14:55:12 EST 2005 | muse95

Your response is from the point of view of using a Bismuth solder with Pb plated leads. Samir's point of view is from Bismuth in the plating on the leads being used with a Pb solder. There is a very large difference in the amount of Bi that will en

Using parts with Tin Bismuth plating in tin lead soldering

Electronics Forum | Mon Dec 12 21:38:05 EST 2005 | davef

Effect of lead on bismuth solders * Lead from hot air leveling (HAL) coatings can diffuse through the grain boundaries of the alloy. * Lead can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. * Melting point of this eutectic all

Terminal plating

Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef

Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl

pcb plating

Electronics Forum | Sun Sep 15 21:44:41 EDT 2002 | jason

Hi Dave, Immersion Ag has poor surface appearances after reflow or rather tarnished, while Immersion Tin requries higher temp. Probably that's why Immersion Ag is more preferred.

pcb plating

Electronics Forum | Fri Jun 14 14:30:36 EDT 2002 | davef

Assuming you are talking about solderable surfaces: People specify various materials to protect the solderability of the pads on the board. Gold, actually, Electroless Nickel - Immersion Gold [ENIG], is popular. * Board fabricators like it because

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