Ted,
Yup, its possible. I have done it several ways in the past:
a. Make each line a finger of an interdigitated comb pattern.
b. Run a serpentine or spiral pattern towards the inner side of the
array.
c. Run two parallel lines through the center of the mounting pads
(rather than a full comb).
Each approach supposes that you have a mechanical-only BGA, no internal
die. If you have an internal die, the internal resistances mess up the SIR
measurements and will in all likelihood short the pattern.
Doug Pauls
Ted Kong
<zombietheking@YA
HOO.COM> To
Sent by: TechNet [log in to unmask]
<[log in to unmask]> cc
Subject
12/03/2004 12:30 [TN] SIR design
PM
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
Ted Kong
<zombietheking@YA
HOO.COM>
Hi Technetters,
Does anyone know whether it is possible to design a
SIR pattern to place under a connect or BGA (Full
Array)?
Thanks all in advance.
Ted
__________________________________
Do you Yahoo!?
All your favorites on one personal page – Try My Yahoo!
http://my.yahoo.com
---------------------------------------------------
Technet Mail List provided as a 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/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
