TECHNET Archives

November 2002

TechNet@IPC.ORG

Options: Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Guy Ramsey <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 19 Nov 2002 15:30:57 -0500
Content-Type:
multipart/alternative
Parts/Attachments:
text/plain (2362 bytes) , text/html (3970 bytes)
From IPC-2222 Sectional Design Standard for Rigid Organic Printed
Boards; Sub-section 9.1.5 Conductive pattern Feature Location:
Greatest Board Dimension between 300 and 450 mm
Complexity Level A -> 0.35 mm  Level B -> 0.25 mm Level C -> 0.15 mm
This applies to lands, connector contacts and conductors in relation to
datums. This tolerance includes tolerances for master patterns accuracy,
material movement, layer registration and fixturing.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of tony steinke
Sent: Tuesday, November 19, 2002 3:11 PM
To: [log in to unmask]
Subject: [TN] dimensional tolerance


Techers,

Any one out there have information on what the dimensional tolerance is
for surface mount pads(BGA's, QFP's) across
a board size of 13 X 11 inches. Customers print does not specify and can
not find in IPC the default spec.
Thanks,

Tony Steinke
AIT-Atlanta Inc.
--------------------------------------------------- Technet Mail List
provided as a free service by IPC using LISTSERV 1.8e To unsubscribe,
send a message to [log in to unmask] with following text in the BODY (NOT
the subject field): SIGNOFF Technet To temporarily halt or (re-start)
delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL
or (MAIL) To receive ONE mailing per day of all the posts: send e-mail
to [log in to unmask]: SET Technet Digest Search the archives of previous
posts at: http://listserv.ipc.org/archives Please visit IPC web site
http://www.ipc.org/html/forum.htm for additional information, or contact
Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------


---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------


ATOM RSS1 RSS2