Well, that was what I saw.
After looking at the link Steve sent, I think it might have been misunderstanding (mainly from my site), as I was referring to C4 and not columns like in the Steve's link.
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: Werner Engelmaier <[log in to unmask]>
Date: Thu, 10 Mar 2011 20:30:28
To: <[log in to unmask]>; <[log in to unmask]>
Subject: Re: [TN] CCGAs vs BGAs
That does not explain anything.
Werner
-----Original Message-----
From: vladimir Igoshev <[log in to unmask]>
To: Werner Engelmaier <[log in to unmask]>; [log in to unmask]
Sent: Thu, Mar 10, 2011 5:36 pm
Subject: Re: [TN] CCGAs vs BGAs
Werner,
If you take a look at C4s of large (around 1") ASICs in section you'll see the corner "balls" tilted towards each other.
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
From: Werner Engelmaier <[log in to unmask]>
Date: Thu, 10 Mar 2011 17:31:49 -0500
To: <[log in to unmask]>; <[log in to unmask]>
Subject: Re: [TN] CCGAs vs BGAs
Please explain that.
Werner
-----Original Message-----
From: vladimir Igoshev <[log in to unmask]>
To: TechNet E-Mail Forum <[log in to unmask]>; Werner Engelmaier <[log in to unmask]>
Sent: Thu, Mar 10, 2011 4:10 pm
Subject: Re: [TN] CCGAs vs BGAs
And in large packages they can be "bent" (at room temperature" by design to
accommodate for CTE difference at higher temperatures.
Vladimir
SENTEC Testing Laboratory Inc.
11 Canadian Road, Unit 7.
Scarborough, ON M1R 5G1
Tel: (416) 899-1882
Fax: (905) 882-8812
www.sentec.ca
-----Original Message-----
From: Werner Engelmaier <[log in to unmask]>
Sender: TechNet <[log in to unmask]>
Date: Thu, 10 Mar 2011 15:27:54
To: <[log in to unmask]>
Reply-To: TechNet E-Mail Forum <[log in to unmask]>,
Werner Engelmaier <[log in to unmask]>
Subject: Re: [TN] CCGAs vs BGAs
Hi Ioan,
What they told you, "if the columns are bent more than 10 degrees, they end up
with plastic deformations, which affects long term reliability" is a Red
Herring. YES, you get plastic deformation, and YES, you have problems if you do
not straighten the columns out prior to placement, BUT NO, you do NOT affect
long-term-reliability. It is ONE cycle of many to come.
Werner
-----Original Message-----
From: Ioan Tempea <[log in to unmask]>
To: [log in to unmask]
Sent: Thu, Mar 10, 2011 3:12 pm
Subject: Re: [TN] CCGAs vs BGAs
Phil,
I have only assembled them once, in a previous life, and I can tell you one
thing: you have to make sure all the assembly chain (starting with Incoming and
ending with Packing) be advised about what these components are.
I have learned this when getting a call from the Stores telling me those new
components had a problem, the pins being too soft. Besides the fact they were
coming from the customer and they had been removed from the original trays only
to be shipped in a square box, it turned out (after calling Intel) that if the
columns are bent more than 10 degrees, they end up with plastic deformations,
which affects long term reliability. So we had to scrap a few parts costing $900
each...
They solder well, if solder volume is per manufacturer's specification, but the
placement machine vision systems will have a problem with the white ceramic
body. If you can, specify dark body.
Good luck,
Ioan Tempea, ing.
Ingénieur Principal de Fabrication / Senior Manufacturing Engineer
T | 450.967.7100 ext.244
E | [log in to unmask]
W | www.digico.cc
N'imprimer que si nécessaire - Print only if you must
-----Original Message-----
From: Phil Bavaro <[log in to unmask]>
To: [log in to unmask]
Sent: Thu, Mar 10, 2011 1:23 pm
Subject: [TN] CCGAs vs BGAs
Are there a lot of Technet folks using Ceramic Column Grid Arrays?
Somehow I have managed to dodge that bullet until now. In the telecom
arena, my impression was it was better to keep my designs limited to
BGAs but I suspect that things might have changed now that I am dealing
with hi-rel designs.
Any advice is appreciated.
Phil
------------------------------------------------------------------------------
This message and any attachments are solely for the use of the addressee and may
contain L-3 proprietary information that may also be defined as USG export
controlled technical data. If you are not the intended recipient, any
disclosure, use or distribution of its content is prohibited. Please notify the
sender by reply e-mail and immediately delete this message and any attachments.
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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.aspx?Pageid=E-mail-Forums
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
=
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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.aspx?Pageid=E-mail-Forums
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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.aspx?Pageid=E-mail-Forums
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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.aspx?Pageid=E-mail-Forums
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
|
