Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


Td and Tg

Views: 1277

#56196

Td and Tg | 27 August, 2008

I read somewhere there is a thermal measure that takes into account Tg and Td. Offhand I can't remember what it is, does anybody know what I'm talking about?

reply »

#56204

Td and Tg | 27 August, 2008

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

reply »

#56219

Td and Tg | 27 August, 2008

I know, but somewhere I read about an equation or relationship that takes both into account to generate another number.

reply »

#56222

Td and Tg | 27 August, 2008

While you're waiting for others to reply, here are a couple of previous postings from the fine SMTnet Archives: * http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=45013

* http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=50312

reply »

#56223

Td and Tg | 27 August, 2008

Yep, that is probably the one in the Werner's paper.

Vlad

www.sentec.ca

reply »

#56242

Td and Tg | 28 August, 2008

BINGO. I knew there was some relationship between the 2, thanks guys.

reply »

pcb components vacuum pick up

ii-feed SMT Intelligent Feeder