3. CTE could be related as filler concentration in turn may determine the
CTE of a material.
Syed.

        -----Original Message-----
        From:   Frank K. Frimpong [SMTP:[log in to unmask]]
        Sent:   Thursday, August 06, 1998 3:52 AM
        To:     [log in to unmask]
        Subject:        [TN] CTE of PCB material.

        Hi fellow Technetters and Chipnetters,

        1 Does anyone know how I can measure the sensitivity of
semiconductor
        components to alpha particle radiation.

        2 What will be  the main emitters of alpha particles in a flipchip,
pwb/pcb
        assembly?

        3 Does material TG play a role in the emissivity of organic
substrates?

        4 I have also heard it mentioned the Silicon -Germanium dice is more
likely
        to be affected by the emissions than silicon or Gallium arsenide. is
this
        true? if so
          why?

        5  Are there any ways of controlling, reducing or eliminating these
        emissions, perhaps by laser treatment etc.

        I am looking forward to receiving all your replies Thanks.

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