Bad news Steve, IPC-D-275 has been superseded by IPC-2221 and 2222.
You can check on these at the IPC web site at:
http://www.ipc.org/
or directly at the revision table at:
http://www.ipc.org/html/revstat1.htm
I'm sorry, but I have no clue concerning your Aluminium Casting.
Alain Savard, B.Sc.
Chemical Process Analyst
CAE Electronics Ltd.
e-mail: [log in to unmask]
-----Original Message-----
From: Steve Collins
Subject: [TN] Flatness Specification for PCB's & Supporting Devices
An Engineer just came to me and ask if I could find out what the flatness
spec
would be called out in a Aluminum casting that supports a printed circuit
board.
Any takers on this or suggestion where to start. We call out a flatness (Bow
&
Twist spec per IPC-D-275) but I'm not sure if this is sufficient for casting
operations.
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################