Electronics Forum: bismuth (Page 1 of 11)

I have several memory devices that have 2% bismuth in the lead c

Electronics Forum | Tue Feb 08 15:05:22 EST 2005 | Keith Lengling

I have several memory devices that have 2% bismuth in the lead coating. Is this enough bismuth to be concerned over the formation of a low temperature SnPbBi alloy? What are the allowable limits for bismuth in an SnPb process for both SMT and through

I have several memory devices that have 2% bismuth in the lead c

Electronics Forum | Tue Feb 08 22:04:34 EST 2005 | davef

Tough to say. Can you accept the loss of strength of your solder connection if upto 2% of the solder is affected? * Lead and bismuth alloys can form a eutectic composition of Bi52Pb32Sn16 in the grain boundaries. * Melting point of the eutectic all

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

Low Melt Solder Chemistry for use in Rework Process

Electronics Forum | Wed Feb 07 16:20:46 EST 2007 | davef

Bismuth is a low-melting metal with poor mechanical properties; if you melt the bismuth wire into a standard tin-lead solder joint, then the bismuth alloys with the solder, and forms a material that will crumble if you scrape it with your fingernail.

Bismuth

Electronics Forum | Thu Aug 24 15:35:55 EDT 2000 | jkervin

Hi Dr. Lee, Besides the requirement of a PB free surface finish on PCBs, could you tell me what the pros and cons of a Bismuth bearing solder are? Thanks, Jon Kervin

Bismuth finishes

Electronics Forum | Thu Mar 04 02:17:11 EST 1999 | Teemu M�kiniemi

Hello! Does anyone know any PWB bitmuth finish suppliers? How thick layers are usually used? What pros and cons bismuth plating has in PWB applications? Teemu

The truth about lead-free and environment

Electronics Forum | Fri Mar 24 13:05:08 EST 2006 | samir

Patrick, I learned at a Lead-Free seminar, where the seminar lecturer was a proponent of Bismuth in soldering, that Bismuth is actually "safe to eat" and is one of the few non-toxic metals around.

Bismuth Component Plating

Electronics Forum | Thu May 25 23:26:23 EDT 2006 | adihsr

anyone who knows if really BISMUTH is not good as a replacmeent plating for lead free?...pls.. advise..have a good day...

Bismuth containing Solder Paste

Electronics Forum | Tue Jan 06 18:06:05 EST 2009 | aj

Hi all, I am currently trialling a solder paste which contains Bismuth. It is leadfree and reflows at 138 degrees C. I would appreciate any pros/cons? aj...

Tin-Bismuth Eutectic

Electronics Forum | Sat Dec 10 05:39:32 EST 2011 | svijais

Dear Friends, I would like to know whether any of you evaluating with Low Temperature Solder especially Tin-Bismuth-Silver COmbination. If you have any feedback/articles/evaluation/reliability/Yield Reports, please share. Regards Vijai

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