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| From: | |
| Reply To: | TechNet E-Mail Forum. |
| Date: | Thu, 19 Dec 2002 08:30:20 -0600 |
| Content-Type: | text/plain |
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This is a difficult question to answer. The simple answer is none.There are too many factors involved. Lead to hole ratio, copper weight, skill of operator and equipment used are all variables to consider. I have removed and replaced a 172 pin PGA 15 times in a 15 layer board with no apparent damage. Although I'm sure there was some degradation to the life expectancy of the board. This board was later used as part of the flight qualification, -40 to +85 degC severe vibe etc. and passed. I will be watching for other replies to this one.
Charles Caswell
-----Original Message-----
From: Victor Hernandez [mailto:[log in to unmask]]
Sent: Thursday, December 19, 2002 7:55 AM
To: [log in to unmask]
Subject: [TN] PCB Repair Criteria
> Fellow TechNetters,
>
> Can some one assist me with this question. How man times can a PTH
> component be
safely removed before damage to the inner connections on the barrel occurs.
> Victor G. Hernandez
>
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