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Component Lead Finish - Article in Japanese Can some body help ?

Kris

#22454

Component Lead Finish - Article in Japanese Can some body help ? | 20 November, 2002

Hi

Here is an recent article on compatibility of Sn/Pb paste with Sn/Bi component finish ? Can somebody who is intrested help with what the contents are ?

Thanks

http://www.denso.co.jp/DTR/vol6_no2/dissertation13.pdf

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#22459

Component Lead Finish - Article in Japanese Can some body help ? | 20 November, 2002

Here's part of what I could read:

"We evaluated the influence of Lift-off (Fillet-lifting) and the influence of thermal fatigue, in this case on combination between various terminal platings of electronic components and Pb-free solder, Sn-37Pb solder. As the result, (1) Lift-off is the same level to compare flow soldering and spot reflow soldering in THD. (2) In this case of combination between Sn-3.5Ag solder and Sn-Bi plating, Bi contents is near by 3wt%, Lift-off will occur. (3) The rate of solder crack worsens by component which has a high plastic strain in solder joint, in this case of combination between Sn-37Pb solder and Sn-5~6Bi plating."

For help getting your Acrobat Reader to handle that document, try this:

http://www.adobe.com/products/acrobat/acrrasianfontpack.html

Thanks for posting that, by the way. We're in the midst of a Japanese component supplier wanting to go lead free and it was very pertinent, if not depressing as well.

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Kris

#22471

Component Lead Finish - Article in Japanese Can some body help ? | 21 November, 2002

Thanks Steve,

Its the same problem we are facing. I could read the data that was in english. I want to know what they have concluded in their summary.

Are you a Contract Manufacturer or a OEM ?

Thanks

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Kris

#22472

Component Lead Finish - Article in Japanese Can some body help ? | 21 November, 2002

Thanks Ken from who posted it on SMTinFocus forum

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#22476

Component Lead Finish - Article in Japanese Can some body help ? | 21 November, 2002

We're an OEM and buy a lot of stuff from over there, some for cost, some just for availability. Don't know where this is going but it doesn't look good.

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Peterson

#22492

Component Lead Finish - Article in Japanese Can some body help ? | 22 November, 2002

Can anyone tell me of a timeline for Lead Free implementation? I know different coutries are talking about different approaches. But, is there a consensus in Japan? Europe? US? The IPC site has a great pdf...but it is 2 years old! Any more current information?

Thanks!

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GSW

#22493

Component Lead Finish - Article in Japanese Can some body help ? | 22 November, 2002

Hi,

Europeon mandate has been passed to enforce lead free from June 2006 i guess. The japanese manufacturers have long implemented lead free and most of the component manufacturers have already gone lead free. I will post more specific links later.

thanks

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GSW

#22494

Component Lead Finish - Article in Japanese Can some body help ? | 22 November, 2002

Hi,

Europeon mandate has been passed to enforce lead free from June 2006 i guess. The japanese manufacturers have long implemented lead free and most of the component manufacturers have already gone lead free. I will post more specific links later.

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