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Subject:	500 KHz breakdown of FR4
From:	Bill Higinbotham <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:	Tue, 24 Aug 2004 12:24:47 -0400
Content-Type:	text/plain
Parts/Attachments:	text/plain (23 lines)

We are using a multilayer FR4 board with 12 mils between layers and getting
breakdown between traces on different layers.  The voltage is about 3500 V
peak.  THis board should be good for 740 V/mil x 12 or 9 KV.  I wonder if
it is excessive leakage due to moisture absorption?

Bill

Bill Higinbotham
RFL Electronics Inc.
E-mail : [log in to unmask]
Voice: 973.334.3100 Ext. 386
Fax: 973.334.3863

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