[SI-LIST] Re: MLF packages
- From: "Chandrakanth" <Chandrakanth@xxxxxxxxxxxxx>
- To: <ray.anderson@xxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Fri, 9 Dec 2005 21:57:44 +0530
Thank You ray,
But some of the members mailing to the list says that "according to
attachment provided","As shown in figue".I think beter they explain in mail
What are the problemns they have or the suggestions provide.Because people
like will get no use of those mails.
Regards,
Chandra kanth
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Ray Anderson
Sent: Friday, December 09, 2005 21:49
To: si-list@xxxxxxxxxxxxx
Cc: Ray Anderson
Subject: [SI-LIST] Re: MLF packages
Chandra-
Attachments do not pass through si-list by design.
In the past we had problems of too many large (i.e. > 1MByte)
attachments being sent through the list. Multiply that by 3500+ outgoing
messages and you can see the bandwidth it consumes. One time it almost
crashed the server.
Also, by restricting the attachments we can prevent the spread of
virus's by way of the list.
Due to the above factors a decision was made to have the listserver
software delete all message attachments.
Regards,
-Ray Anderson
(si-list admin)
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Chandrakanth
Sent: Thursday, December 08, 2005 6:52 PM
To: gschneider@xxxxxxxxx; vivekchandra59@xxxxxxxxx;
si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: MLF packages
Sorry sir,
I am unable to get any attachments from the SI-List.Even the MLF.dxf
attached to this mail as specified in it.Why is it so?
Reagrds,
Chandra Kanth
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Gary Schneider
Sent: Thursday, December 08, 2005 20:06
To: vivekchandra59@xxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: MLF packages
Vivek,
I am attaching a dxf of the footprint we use for our 28 pin mlf
package.
This has worked quite well for us. Notice 4 separate paste mask and
solder mask areas on the die pad. The pads are also oversized to extend
outside the package which will make it much easier for visual
inspection. Hope this helps.
Gary
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Vivek Chandra
Sent: Thursday, December 08, 2005 7:07 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] MLF packages
Hello ,
I'm facing a lot of problem debugging an MLF-32 or ML-28 package for
high
speed board design. Most of the time when i finish my debugging i end up
with a conclusion that the soldering of the package pins are not proper
and
hence the problem. Does anyone out there know if there is any confirmed
and
guaranteed method of soldering these type of packages? Also to ease out
my
debugging time would there be any methods for design for testability in
this
type of packages, because sometimes there is a rare possibility that the
IC
pin might not be getting any lead or contact with the pad.
Thanks
Vivek Chandra
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-- Binary/unsupported file stripped by Ecartis --
-- Type: application/octet-stream
-- File: mlf.dxf
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