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May 1998

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Subject:
IPC 2222 High CTI use FR-6 CRM-5 ?
From:
"b. van zalk" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 20 May 1998 16:13:42 +0200
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Unclassified

Hello,

I have a few questions about IPC 2222 page 11 figure 4-2.

For good electricals and high CTI, FR-6 or CRM-5 should be used.

Does CTI mean Comparitive Tracking Index and if so what is
the definition of it ?

We have never heard before about FR-6.
What kind of materials are FR-6 and CRM-5 ?

I hope sombody can help me out with these questions.

Thanks,

Bas van Zalk

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