Ezequiel,
FR stands for "fire-retardant" or "flame-retardant". As far as the "4", I
don't know....never asked.
Jason Gregory
SMT Production Supervisor/
Integrated Product Team Leader
LaBarge Inc.
(918)459-2367
(918)459-2221 fax
[log in to unmask]http://www.labarge.com
Ezequiel Cruz
<ec@KSI-CORPORATI To: [log in to unmask]
ON.COM> cc:
Sent by: TechNet Subject: [TN] FR-4
<[log in to unmask]>
09/10/2003 10:37
AM
Please respond to
"TechNet E-Mail
Forum."; Please
respond to
Ezequiel Cruz
Can anyone tell me what the FR-4 acronym stands for?
I know what the material is per IPC 4101, but what does the FR and the
number 4 stand for?
Thanks techies.
Ezequiel
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