E
[email protected]
- Jan 1, 1970
- 0
Hello John
Last year, we conducted testing on a virgin batch of these caps,
charging them to 60V through a 10k resistor. Around 2% of them went
spuriously short circuit, then recovered and continued charging, some
repeating this cycle several times before charging fully to 60V, after
which they would not repeat the failure during numerous re-tests.
We spoke to Arcotronic and they now carry out specific screening along
similar lines, but the problem has not gone away, nor has it noticeably
reduced.
The failures frequently occur at or near the end of extensive testing,
including temperature cycling and vibration, and my concern has been
that some aspect of our application causes the failures - hence my
original post.
However, there is clearly a reliability issue with this component, and
I am coming round to the view that it is the component and not what we
do with it that is the problem. Unfortunately however, our choices are
rather restricted when it comes to finding a suitable alternative, but
I shall take a close look at the various suggestions for a replacement.
Ted
Last year, we conducted testing on a virgin batch of these caps,
charging them to 60V through a 10k resistor. Around 2% of them went
spuriously short circuit, then recovered and continued charging, some
repeating this cycle several times before charging fully to 60V, after
which they would not repeat the failure during numerous re-tests.
We spoke to Arcotronic and they now carry out specific screening along
similar lines, but the problem has not gone away, nor has it noticeably
reduced.
The failures frequently occur at or near the end of extensive testing,
including temperature cycling and vibration, and my concern has been
that some aspect of our application causes the failures - hence my
original post.
However, there is clearly a reliability issue with this component, and
I am coming round to the view that it is the component and not what we
do with it that is the problem. Unfortunately however, our choices are
rather restricted when it comes to finding a suitable alternative, but
I shall take a close look at the various suggestions for a replacement.
Ted