Schottky diode failure under pressure
Schottky diode failure under pressure
(OP)
Has anyone in this forum worked with electronics that need to be pressure tolerant - e.g. circuit boards for ROV's underwater??
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Schottky diode failure under pressure
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RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
In fact you can't raise the pressure much at all or you will drive moisture into the pin/package interfaces which will cause immediate failure even with distilled water.
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
Some parts were tested to 200 deg C and were complete with a little hole in the top of the lid. (Package was a cermamic dil 16 with a gold plated lid as a seal).
This stopped the package being crushed by the pressure.
I assume that the electronics was surrounded by oil of some sort.
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
As you may be aware, silicon can have some stress-induced resistivity changes.
If the diode package or assembly on the board is stressed non-uniformly, that may propagate to the die itself and alter its leakage characteristics
TTFN
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
RE: Schottky diode failure under pressure
BTW. Itsmoked, do you know where I can find an application note about internal schottkys on the pic??
RE: Schottky diode failure under pressure
Look for "line voltage input".
Have a good weekend too!
you should jack a picture or two in here that project sounds like a bunch of fun!