Try Aries Electronics www.arieselec.com
They often have adapters like these.
Regards,
Steve Smith
Product Engineer
Staco Energy Products Co.
Web Site: www.stacoenergy.com
& www.stacopower.com
DISCLAIMER AND/OR CONFIDENTIALITY NOTICE:
This message, including any attached materials, is intended solely for
the use of the individual or entity to whom it is addressed and may
contain information that is privileged, confidential, and exempt from
disclosure under applicable law. If the reader of this electronic mail
transmission is not the intended recipient, you are hereby notified that
any dissemination, distribution, or copying of this communication is
strictly prohibited. If you have received this communication in error,
please e-mail or call Staco Energy Products Co. at (937) 253-1191. Thank
you for your cooperation.
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Phil
Dam
Sent: Monday, February 12, 2007 10:57 AM
To: [log in to unmask]
Subject: [DC] Discontinued surface mount IC package fix
We have run into an issue with a discontinued surface mount IC package
type. It is an 84 pin PLCC style package. However, the device is still
offered in a 20 mil pitch 100 pin QFP style package. We have considered
revising the current pwb but it does not lend itself to the minor
revisions that would enable the 100 pin QFP to be used (too many vias
and traces routed to and under the component). We are looking for a way
(short of a total re-layout of the pwb) that would allow the 100 pin QFP
to be used. Does anyone know of a (custom?) interposer or adapter (and
its manufacturer) that could be used to allow use of the substitute QFP?
Has anyone ever had success making their own BGA style adapter? (out of
laminate material, the bottom having an array that would match a revised
the land pattern on the pwb, the top of which would have the 100 pin QFP
land pattern, with the top and bottom sides connected by vias).
One other consideration: The design is analog and there are 5
components per pwb.
Regards,
Phil Dam
------------------------------------------------------------------------
---------
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 temporarily stop/(restart) delivery of DesignerCouncil send: SET
DesignerCouncil NOMAIL/(MAIL) Search previous postings at: www.ipc.org >
On-Line Resources & Databases > E-mail 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
------------------------------------------------------------------------
---------
---------------------------------------------------------------------------------
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 temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL)
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail 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
---------------------------------------------------------------------------------
|
