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Please see following request. Replies will be forwarded.
______________________________ Forward Header __________________________________
Subject: Volts per Mil ????
Author: DHOOVER at HADCOTCII
Date: 2/26/96 4:51 PM
I have a customer who has asked what is the required spacing on
both innerlayers and outerlayers for 1500 VAC (~2100 VDC).
Outerlayers have dryfilm soldermask covering them.
I looked up IPC-D-275 and have referenced the data from table 3-1.
This customer feels these values are extremely conservative and
is curious if other designers are using that criteria rigidly?
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