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May 2004

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Subject:
From:
"McCall,Doug" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 19 May 2004 08:01:41 +0100
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Hi,

What is the general thinking on the glas transistion temp (Tg) for FR4 being
used for Pb-free PCBAs.  I guess that the 'standard' is 140 deg-C and is it
sensible (and required) to go for a higher Tg??  Is it a good idea to use a
higher
spec laminate??

Any thoughts will be very interesting.

Thanks,
> Douglas I McCall
> Printed Circuit Board Assembly Engineer,
>
> /// /// ///  BOC EDWARDS
H   BOC Edwards, 15 Marshall Road, Eastbourne, East Sussex, England, BN22
9BA
> *  +44 (0)1323 501147
*    +44(0)1323 509824
*+44 (0)7785 247 685
> *  mailto:[log in to unmask]
www.bocedwards.com




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