Hi Darrel,
FR5 is a glass reinforced epoxy resin similar to FR4 except it has "higher
retention of flexural strength at elevated temperatures". Spec is IPC
4101/23. FR5 usually has a higher Tg than FR4 about 165 - 170 degC.
G11 is the non flame retardant version of FR5.  Spec is IPC 4101/22.
All the major laminate manufacturers produce an FR5.

Geoff Layhe
www.lamar-uk.co
-----Original Message-----
From: Darrel Therriault [mailto:[log in to unmask]]
Sent: 18 December 2001 23:44
To: [log in to unmask]
Subject: [TN] FR5


Technetters,

Can someone define FR5-G11 for me or point me in a direction to find out
what this is?  Not familiar with FR5 or G11 callout for laminate.

Tks......DT




--
Darrel Therriault
VP, Mfg. Operations
INCEP Technologies, Inc
(858)547-9925 223
[log in to unmask]

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