TECHNET Archives

April 2003

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text 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:
Leo Lambert <[log in to unmask]>
Reply To:
Date:
Wed, 23 Apr 2003 09:29:40 -0100
Content-Type:
text/plain
Parts/Attachments:
text/plain (63 lines)
You can find some of that information in IPC-600 and in the 6012 document.

They identify voids in the epoxy materials and sizes of such along with Zone
A and B differential requirements.

Hope this helps.

Leo Lambert
EPTAC Corp
WWW.EPTAC.COM

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Brown, William G
Sent: Tuesday, April 22, 2003 4:45 PM
To: [log in to unmask]
Subject: [TN] Voids / Air Pockets in Laminates


Hi All,

Does anyone know where I can find information on air bubbles or voids within
completed circuit boards?  We have a group here which is concerned about any
voids left when the laminates are pressed together, either within or between
layers, and the effects they might have at high altitudes.

Are there any IPC specs which state allowable values or anything like that?
These are boards made with IPC-4101/ 40, 41 or 42 materials.

Thanks for any help!
Bill

############################################
William G. Brown
Senior Electrical Engineer - PWD Engineering Support
> xBAE  SYSTEMSx - Information & Electronic Warfare Systems
Phone: 603-885-4930     Fax: 603-885-5435
############################################

---------------------------------------------------
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