The voltage value matters.

When at a power supply manufacturer products would pass at a mountain top
but would fail testing for space.

Found out when a small order for custom power supply was rejected when
re-ordered. The catalog cut stated that the following configurations worked
to 14k ft. The initial order was placed and the prodcuct worked in a smart
pebble firing. When more were ordered. they were rejected by the customer
for corona testing at atmosphere values that were space based. We referred
the customer to the catalog cut and told them of course they failed, not
design intent.

Unfourtunetly, studies were closely held there.

For power supplies in the 100's to 10kv's it matters due to the corona that
becomes more prevelant at the higher altitudes. These ps were all
controlled leakage devices, low amperage.


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