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Subject:	Re: SV: [TN] Qualification of the Pb-free capable manufacturers
From:	Werner Engelmaier <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:	Wed, 14 Dec 2005 14:55:43 EST
Content-Type:	text/plain
Parts/Attachments:	text/plain (20 lines)

Hi Inge,
I do not know abput UL's proposal, but there are some defined conditions: 
T260, T288, T300 & T320 defining temperatures at which time to delamination is 
measured up to 45 minutes--I also do not know who came up with this measure 
[288°C???]. Standard FR-4 has a T260 of less thasn 30 minutes and a T288 of less 
than 5 minutes, whereas a high Tg/highTd material has a T288 of 45 minutes and 
a T320 of about 25 minutes.

Werner

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