Electronics Forum: transition and temperature and gp0-2 (Page 1 of 1)

Td and Tg

Electronics Forum | Wed Aug 27 13:08:30 EDT 2008 | vladig

Td - is the degradation temperature for a laminate (board), while Tg - is glass transition one. There is one more (even more important) - delta Tg. They characterize the quality of the laminate material. Regards, Vlad www.sentec.ca

Your opinion about RoHS and WEEE ?

Electronics Forum | Wed Dec 15 16:38:42 EST 2004 | patrickbruneel

Here's my 10 cents Studies done in the 1980's concluded that pure tin was prone to whisker generation. A tin content lower then 70% became exempt from this phenomenon. I have never seen or done any studies on the impact lead had in reducing the pote

Selective soldering pallets and solder balls

Electronics Forum | Tue Dec 10 14:10:38 EST 2002 | Randy Villeneuve

Steve, I wave solder most if not all our boards with selective wave pallets. I did not catch if the solder balls were on top of the board or on the bottom but that will make a difference on what to do to get rid of them. Pallets are good and bad. On

Rohs and non rohs components on a board

Electronics Forum | Tue Feb 06 06:41:53 EST 2007 | pavel_murtishev

Good afternoon, You have to use lead paste since none-RoHS components won�t withstand elevated temperatures. Solder paste manufacturers offer a lot of transitional pastes designed specially for mixed process. Ask your paste supplier for transitional

Rohs and non rohs components on a board

Electronics Forum | Tue Feb 06 13:24:31 EST 2007 | stepheniii

Good afternoon, > > You have to use lead paste > since none-RoHS components won�t withstand > elevated temperatures. Solder paste manufacturers > offer a lot of transitional pastes designed > specially for mixed process. Ask your paste > suppli

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