It would seem plausible to think that a "route before lamination" procedure could be used on the layers that occupy the space from .062 to .125 in the stack. Maybe there are valid manufacturing issues that would preclude that from being an option. Any PCB fabbers care to comment?
It appears to be similar to some of the issues involved in rigid/flex construction
Donn
Donn Smith, CID
Senior PCB Designer
GARMIN International
1200 E. 151st Street
Olathe, KS 66062-3426
[log in to unmask]
------------------------------------------------------------------------------------------------------------------------------
CONFIDENTIALITY NOTE
This email and any attachments may contain confidential material for the sole use of the intended recipient. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of this e-mail or any attachment is prohibited. If you have received this e-mail in error, please contact the sender and delete all copies. Thank you for your cooperation.
-----Original Message-----
From: Susy Webb [mailto:[log in to unmask]]
Sent: Wednesday, February 06, 2002 11:58 AM
To: [log in to unmask]
Subject: [DC] routing the thickness of a board
I've got a good one for the gurus out there!
And engineer just asked me if a rigid board could have an area (an edge
actually) routed such that the overall area of the board is one thickness
(.125), and the routed area is another (.062) See the side view picture
below...
routed area
\ __________________
_____| |
.062 |_______________________| .125
Other than the obvious issues of controlling routing depth, and I imagine a
hugh cost, what else should I be concerned about? Can it even be done??? We
were thinking that it might be easier to build two boards and fuse them into
one, but would the alignment problems kill that idea?
TIA for any help,
Susy
Susy Webb, CID
Sr PCB Designer
Carlo Gavazzi Computer Systens
281-875-1500 x33
[log in to unmask]
---------------------------------------------------------------------------------
DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF DesignerCouncil.
To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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
---------------------------------------------------------------------------------