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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 9 Sep 1999 08:30:06 +0100 |
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Paul,
Ive got some "old" Nelco data sheets, and they claim Z axis TCE's
of
50ppm/C below Tg
275ppm/C above Tg
Roger
______________________________ Reply Separator _________________________________
Subject: [TN] FW: [TN] Woh Nelco.............
Author: "TechNet E-Mail Forum." <[log in to unmask]> at #email
Date: 08/09/99 15:56
Not sure if this got through first time. If it did apologies for
repeating it.
> ----------
> From: Geoff Layhe
> Sent: 08 September 1999 10:10
> To: [log in to unmask]
> Subject: RE: [TN] Woh Nelco.............
>
> Paul,
> I don't have information on N4000-2 but the figures usually quoted for
> Z axis expansion in FR4 laminate with a Tg of 140ºC are 150-200ppm/ºC.
> This is for a measurement range between 50-200ºC.
> If the measurement range is below the Tg then the Z expansion is
> usually quoted as 30-40ppm/ºC.
>
> Hope this helps.
> Geoff Layhe
> Lamar-UK
> www.lamar-uk.co.uk
>
> ----------
> From: PAUL BROWN[SMTP:[log in to unmask]]
> Reply To: [log in to unmask]
> Sent: 07 September 1999 19:07
> To: [log in to unmask]
> Subject: [TN] Woh Nelco.............
>
> Does anybody know the CTE Z for Nelco N4000-2, 6 or 13. I checked
> there
> website and unlike the values for x and y the z values are specified
> in
> %. if 3.5% is in fact correct would that not mean CTE of 3500 PPM??
> Help would be great...............Paul
>
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