Is this something that is already being produced?  FR-4 can be made in that
thickness as well as many other materials.  If this board is not in
production yet and the board has no solder mask it seems to me that you
would need at least 1 inch or greater between the 30kv traces and anything
else due to its ability to jump (ESD, I have seen an ESD gun that at 25KV
could jump a 2 inch gap once the air was sufficiently charged)across
conductors.  Also there may be UL requirements if this product has to go
through their processes (For example at 120 VAC minimum spacing is ~0.063"
between AC hot and other conductors). The clear coating could be some form
of conformal coating.  If you need more info let me know.

Mark Ross


-----Original Message-----
From: Greg Kaskey [mailto:[log in to unmask]]
Sent: Wednesday, December 15, 1999 10:07 AM
To: [log in to unmask]
Subject: [DC] PWB High Voltage Material Choices?


All,

I hope you are doing well.

What PWB Material do I call out for one that is 0.074 inch thick and it does
High Voltage Multiplying with 30K Volt Output?

The board has no solder mask and is encapsulated in a "Black, Rubber Like
Material".  Also, the Board looks like it has some kind of clear coating
that
does not remind me of a "normal" protective coating which is applied to the
entire finished assembly; it is soft vs. hard and can be easily scraped off.

What questions would I need to ask to determine some of the material
choices?

Thanks for Helping,

Greg Kaskey
Sector Electronics, Inc.
V: 770-955-8044
E: [log in to unmask]

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