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Date: | Wed, 21 Oct 1998 16:03:03 +0200 |
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x/y = 10-12 *10^(-6)/K (Klein-Wassik: softsolder in the elektronics, or how
it may be called in a non-german edition)
Kett-richtung (bended fibers) 12* 10^(-6)/K (privat comunication by an
sellman)
Schuss-Richtung (straight fibers) 14-15 * 10^(-6)/K (privat comunication by
an sellman)
z = 50-70 10^(-6)/K (privat comunication by an sellman)
Hope it helps
Wolfgang Nuechter
> ----------
> Von: MARS100[SMTP:[log in to unmask]]
> Antwort an: TechNet E-Mail Forum.;MARS100
> Gesendet: Sonntag, 18. Oktober 1998 07:34
> An: [log in to unmask]
> Betreff: [TN] FR4 thermal expansion
>
> Deso anyone has the coefficent of thermal expansion for
> FR4 PCB material, in both X-Y and Z directions ?
>
> Thanks.
>
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