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Date: | Sun, 18 Jan 1998 12:45:52 -0800 |
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Juanita Zeinstra wrote:
>
> We are located in Grand Rapids Michigan. We are moving across town to
> a new building which is being renovated to suit our needs. With a
> tight budget getting tighter, there is a somewhat political and
> emotional contest in the making.
>
> By title our assembly facility will be called the "Engineering
> Manufacturing Development Center (EMDC)". Engineering activity is
> located in Grand Rapids, Mi. while production manufacturing will be
> located in Clearwater, Fla. The EMDC will have process development,
> low volume and transition responsibilities.
>
> We assemble primarily SMT boards but there is some thru-hole and mixed
> technology as well. Processing in the EMDC includes wave, vapor
> phase, and hand soldering. IR, convection ovens or even new technolgy
> soldering may be added later, as well. Our boards are primarily rigid
> polyimide boards but flex and rigid-flex boards are processed
> occasionally. Thermount boards are being considered for the future.
> Cu-Invar-Cu and Cu-Mo-Cu stabilizing cores are frequently employed for
> CTE stabilization.
>
> We will be using more and more plastic and commercial parts and less
> of the ceramic and military grade parts, as is the industry trend. It
> also goes without saying that expect to track industry trends in
> technology, components and processing.
>
> We are in the business for the long term. We started our operations
> in GR in the early 1950's and we will have a 20 year lease on our new
> facility. Our business niche is high technology commercial and
> military avionics. Our facility size is almost 900,000 Sq.Ft. and the
> EMDC and circuit card assembly areas could be as large as 15K-25K Sq.
> Ft. in size.
>
> With that as background, the question is as follows;
>
> What temperature / humidity requirements would you recommend for
> the EMDC and assembly areas of our new facility?
>
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If your process development is principally for your Florida facility,
then you should specify the same temperature/humidity controls.
Phil Dudley
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For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
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