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Subject:	Question for High Voltage guru's
From:	colin mcvean <[log in to unmask]>
Reply To:	TechNet E-Mail Forum <[log in to unmask]>, colin mcvean <[log in to unmask]>
Date:	Mon, 3 May 2010 06:59:37 +0000
Content-Type:	text/plain
Parts/Attachments:	text/plain (34 lines)

Ladies and Gentlemen of Technet-land,
 
Let's consider an application based on FR4, originally manufactured on ceramic base materials:
 
It generates a plasma field from the surrounding air, neutralizing any airborne particals and nasties!
 
It operates at around 3KV, for a period of time then resets.
 
Given passivation layers of FR4 are varied dependant on laminate suppliers supply-chain at the time of lamination, then what influence will this change have? i.e. Would I expect to see any issues with different copper suppliers and passivation types?
 
note: Qualification testing is under load 20% of the time at 3KV under 85/85 damp heat conditions for 1000 hours. It has been qualified on original FR-4 samples, but now I'm worried about this potential change from my laminate supplier.
 
looking forward as usual to comments and advice
 
Colin


      

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