Well, a couple of comments:

Of course we have identified the manufacturer and its supplier. The 
manufacturer is one of the most important semiconductor manufacturers. We 
have received diodes from two different locations: the diodes manufactured in 
the USA are defectives while the diodes manufactured in Europe are Ok. There 
are several date codes affected by this problem.

We have also noticed that the shape of both diodes -European and American- 
is not exactly the same, apart from the color of the band (cathode)

Inge, you asked me why we accepted the components. The answer is 
because we didn't detect anything during incoming inspection. The 
photographs you have seen have been taken with a magnification higher than 
50X. The diodes have a length less than 4 mm and a diameter of about 2 mm. 
We were investigating a problem in a board when we found "something" in the 
glass body of these components. Our first though was the damaged occurred 
during the soldering process but at the end, we have verified that the diodes 
removed from the tape of the reel have also the same problem. That is the 
most important difference with the defect reported in the Nasa advisory.

By the way, thank you for your comments.

JuaN

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