Dear Sir,

     I am looking for a casting epoxy for optoelectronic component. The
     epoxy should have low moisture absorb rate and CTE less than 60 ppm.
     The epoxy can be casted to form the lens and have good clarity and
     light transmissivity.

     In the market, the casting epoxies have very high moisture absorb rate
     and high CTE due to less filler to be added to the epoxy for light
     transmitting purpose. This will cause the serious popcorn when the
     unit is going to reflow.

     I appreciat than i can get some information from you.


     Eden Chen

     Senior Engineer
     HP Singapore

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