Russ,
We require 4 global fiducials on both sides (if components are on both
sides) of the PWB as well as local fiducials, if the pin pitch is less than
25 mils.  However, if two or more components are located completely within a
4 inch diameter only one local fiducial is required.

E.A. Speer
Artwork Engineer
email: [log in to unmask] <mailto:[log in to unmask]>
Telephone: (770) 246-8684
Fax: (770) 246-8765

American Megatrends, Inc.
6145-F Northbelt Parkway
Norcross, GA  30071
Telephone: (770) 246-8600


http://www.ami.com <http://www.ami.com>


                -----Original Message-----
                From:   Vertefeuille, Russ (AZ77)
[SMTP:[log in to unmask]]
                Sent:   Friday, June 05, 1998 12:20 PM
                To:     [log in to unmask]
                Subject:        [TN] Assembly

                Hello everyone,

                I am trying to find out if anyone is still requiring local
fidutials on fine
                pitch patterns.

                Does anyone REALLY use them?

                They  consume a lot of real estate.  Todays placement
machines do an
                excellent job using only the global fidutials.

                Your responses are greatly appreciated !


                Russ Vertefeuille
                Sr. Project Eng.
                Honeywell, BCAS
                Glendale, AZ


################################################################
                TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm)
for additional information.
                For technical support contact Hugo Scaramuzza at
[log in to unmask] or 847-509-9700 ext.312

################################################################


################################################################
TechNet E-Mail Forum 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://jefry.ipc.org/forum.htm) for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################