Hi Rudolph,

There isn't one answer to your question. Would you expect to use the same
ORT for a Pacemaker, or a computer, as you would for a toaster oven?

1.)The ORT should be designed to a specific product and not something pulled
out of a book for a different type product. Is the test strong enough to
find issues with production or is it too strong so that you decrease the
field life by x? What stresses are best suited to your specific product,
etc...
2.)The costs of the testing increase as you request a higher Confidence
level. 


I have some papers that might help if you want to contact me off the TN
group.

Clayton Bonn

Reliability Resources

Ph: 714-903-1005

Cell: 714-612-9359

e-mail:[log in to unmask] 

www.reliability-resources.com

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Rudolph yu
Sent: Saturday, March 07, 2009 9:57 AM
To: [log in to unmask]
Subject: [TN] What kind of ORT does the CM offer?

Hi:

 

For those who has experience with CM and has experience in thie field. I
would like to know what type of ORT your CM used, and most importantly what
are the confindent level and interval people will normally pick?  I want to
have a sample size that is meaningful, but at the same time trying to
limited the 'extra unit" we need to build just for this process.  Do people
treat the post ORT units as sellable units, or they will needed to be
scrapped? 

Where can I find more info. on this subject? It does not seems that IPC has
a standard for ORT.

 

Thanks

Rudolph 

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