Hi Steve
Interesting company! That said, I don't think I could sell this one to my customer - this is a class 3 high rel vehicle electronics beast, and will be seeing some serious off-road action. Their mods might stand up to that, but proving it to my satisfaction would be tough, and my customer would be more skeptical than I am... I've also talked with Circuit Tech corp about replacing the pads, theoretically possible but again a tough sell to the customer.
If I'm "lucky" this won't be a timing sensitive part, and we will end up dead-bugging and wiring the thing. Ah well, it's only a 72 lead part...
Thanks!
- Graham
regards
Graham Collins
Process Engineer,
Northrop Grumman
Atlantic Facility of Litton Systems Canada
(902) 873-2000 ext 6215
>>> [log in to unmask] 07/12/02 02:52PM >>>
Hi Graham!
You're probably gonna have a heck of a time finding some sort of adaptor that
will work, but I have another suggestion.
Have you ever heard of Additive Services? Go to:
http://www.additive.com/
They're a company that has a process to make wireless ECO's, meaning that
they can add conductors to printed circuit boards to make design changes and
you don't have to add jumper wires.
I called them and explained your issue. Basically you need some longer pads
so you can get a heel fillet on the device when soldered to the PCB. They
told me that it would be no problem. However, they can only work with bare
boards.
He asked me what the quantity would be, and I told him I didn't know.
I talked with a gentleman named Darren Cossette at (603) 889-1999, and told
him I would give you the information...
If this sounds like something that would work, give him a call...
Hope this helps ;^)
-Steve Gregory-
> Good day Technet! It's Friday and of that I am glad.
>
> I have a new design where a part (a quad flatpack, 50 thou pitch part) does
> not match the pads on the board. As-is, I can attach it but there will be
> no heel fillet as the heel overhangs the end of pad by a fair bit.
>
> I have examined and discarded the three obvious options:
> - re-form the part to fit: not a good option due to the fact that I'd have
> to straighten and then bend the leads in the opposite direction.
> - buy un-formed parts and form to fit - can do, but schedule will be
> totally in the dustbin.
> - re-spin the board to fix the pad layout - again the schedule will be
> totally out the window.
>
> So - that leaves me looking for an adaptor. Can Technetter's advise me of
> anyone making such beasts on a quick turn basis?
>
> As always, thanks. And a good weekend wish to all.
>
> regards
>
> Graham Collins
> Process Engineer,
> Northrop Grumman
> Atlantic Facility of Litton Systems Canada
> (902) 873-2000 ext 6215
>
---------------------------------------------------------------------------------
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
---------------------------------------------------------------------------------
|
