Dave,
I was told that the bare boards come in slightly under cured to relieve some
of the stresses of the manufacturing process. This came from a man who had
30 years experience in PCB manufacturing industry. I don’t know if you can
truly 'over cure' the board epoxy?

Ted

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David Tremmel
Sent: Friday, October 05, 2007 9:32 AM
To: [log in to unmask]
Subject: Re: [TN] Via plugging with LPI soldermask...

Hello,

Below it was stated that ' . . . the manufacturing process doesn't over cure
the material'.

What happens to PCB material that is overcured?  Does the dialectric of the
material change? Does it cause signal attenuation in the vias?

Thank you in advance,
 
David Tremmel
847 557-9574 - Phone
847 557-9573 - Fax
http://ValuRecovery.com
 
VALUE RECOVERY
Quality is the nature of the service

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