Hi-rel are different for different sectors. Some of them are designed for 15 to 25 years. Some of them are replaceable for every 5 to 8 years of service. 3 years in general consider very short in most of hi-rel job. However, hi-rel for a blast work could be a fraction of second. Without knowing any spec, contract, design life, etc. It is waste of time to speculate. Why I am answering the q? Must be feel nothing better to do in this snowy day! :-(
--------------------------
Sent using BlackBerry
----- Original Message -----
From: TechNet <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Sent: Mon Apr 06 09:43:53 2009
Subject: Re: [TN] PCB Failure analysis
obtw, it would be helpful to get the parameters of the test
application the pwb is used in. Temp, cycling, etc.
Is the "quadpack IC" a power device? If so what temps does the pwb
see under the device?
At 10:05 PM 4/5/2009, mp3 wrote:
>Hello,
>
>One of our customers have comeback after 3 years asking for a
>failure analysis report on a 10 layer industrial grade PCB. The PCB
>was supplied 3 years back and has been functioning satisfactorilly
>for the last 3 years. Now the customer has 3 PCBs which have failed
>and is insisting it is a PCB related failure. The failure in all the
>3 circuit boards are in the same area around a quadpack IC. We
>verified the traveller card of the boards processed and found all
>aspects to be compliant. The PCBs were being used in a jig for high
>reliability harness checking. We feel it should be a component
>related issue rather than a PCB related issue.
>
>Can you give us some inputs on the above which will help us in
>arriving at the right conclusion.
>
>Rgds
>
>Pradeep
>
>-------------------------------
>Micropack Ltd, Bangalore, India
>
>---------------------------------------------------
>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.asp?Pageid=4.3.16 for additional
>information, or contact Keach Sasamori at [log in to unmask] or
>847-615-7100 ext.2815
>-----------------------------------------------------
---------------------------------------------------
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.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------------------------
This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.
---------------------------------------------------
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.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
