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Date: | Thu, 2 Jun 2005 08:03:51 -0400 |
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0.36 W/m K - both our standard and higher Tg Fr4 values.
Jeffrey Bush
Director, Quality Assurance and Technical Support
VERMONT CIRCUITS INCORPORATED
76 Technology Drive - POB 1890
Brattleboro, Vermont 05302
Voice: 802.257.4571.21 Fax: 802.257.0011
http://www.vtcircuits.com
-----Original Message-----
From: John Parsons [mailto:[log in to unmask]]
Sent: Wednesday, June 01, 2005 6:31 PM
To: [log in to unmask]
Subject: [TN] FR-4 Thermal Conductivity Constant??
Happy Wednesday to all,
I have a customer asking for the thermal conductivity constant for FR-4.
I
have seen this spec'd on some specialty laminates, Rogers, GIL for
instance,
but not on any "FR-4" laminates. Would this spec likely be available
from
the laminate supplier? If not, why? Tell me why I see it on the big
$$$
high frequency laminates but not the "cheap stuff".
TIA
John Parsons
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