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May 2000

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Subject:
Re: Prepreg numbering
From:
"Colin W.T. McVean" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Sat, 6 May 2000 10:57:28 +0100
Content-Type:
text/plain
Parts/Attachments:
text/plain (152 lines) 
KK,

Send me your fax number off-line, and I will copy you a sheet I have with
all the various glass style nomenclatures, and specs.

Regards,

Colin McVean
Polyclad Technical Services UK

[log in to unmask]

----- Original Message -----
From: KK Chin <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 05, 2000 8:41 PM
Subject: Re: [TN] Prepreg numbering


> Thanks, Bob,
>
> May be I did not make it clear. I know the number tells something about
the
> resin content, thickness, and the glass fabric layer. However, I'm looking
for
> the exact specification of each number. I would appreciate if someone can
direct
> me to the related websites, or publications.
>
> Regards,
> K.K. Chin
> Artesyn Technologies,
> Fremont, CA
>
>
>
>
> Bob Dube <[log in to unmask]> on 05/05/2000 12:18:46 PM
>
> Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please
respond to
>       Bob Dube <[log in to unmask]>
>
> To:   [log in to unmask]
> cc:    (bcc: KK Chin)
>
> Subject:  Re: [TN] Prepreg numbering
>
>
>
> I'm not sure if "acronym" is the best word, but theyare designations for
> pre-preg styles common to all manufacturers. They have their roots in the
> glass cloth manufacture. Although it may vary somewhat from manufacturer
to
> manufacturer, these designators generally refer to thickness of the
pre-preg
> (with also some effect on resin content). You can usually use several
> different combinations of pre-preg designations to acheive the same
> dielectric thickness in the finished board. However, be careful, for there
> is often a price to pay for the choices made.
>
>
> Bob Dube
>
> -----Original Message-----
> From: KK Chin <[log in to unmask]>
> To: [log in to unmask] <[log in to unmask]>
> Date: Friday, May 05, 2000 2:15 PM
> Subject: [TN] Prepreg numbering
>
>
> >A PCB supplier recommended me to fine tune a  FR-4 multilayer lay-up to
> make use
> >of certain popular prepreg material. He named the prepregs by numbers
like
> 7628,
> >1652, 1080, etc. Are these numbers common acronym, or just from a
specific
> >manufacturer's catalog? How can I decipher these numbers?
> >
> >Thanks,
> >
> >K.K. Chin
> >Artesyn Technologies,
> >Fremont, CA
> >
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