Hi Steve,
   I think the Tech sheet may be referring to shelf life before application, And is typical of
most (give or take).  This peelable mask is a pretty good product.  There are also others on the
market (Hey, I can't be biased--- Sorry Sully) The following issues are not specific to this
product, but with many peelables in general I have seen issues with hold times between Drying and
peeling after soldercoat.  Primarily a light residue of the peelable (varying degrees) on the
laminate,  Never thought it to be a functional issue, but aesthetics play a part also.
    In cases of multiple exposures  or excessive temperatures at soldercoating, There can be a
lifting and leaching of the solder underneath.
    Insure that your vendor has experience with doing this.  It is actually pretty easy, but
there are a couple of tricks.  Also-  Talk to the Peelable mask vendor direct.  I've found
MacDermid to be very good in their support.  JOHN WAITE


Steve Collins wrote:

> Any good or bad stories to share by other Technetters on the above mask.
> Any residue left that would hamper electrical connection, any degradation
> of solder pots due to mask flaking off in wave solder machine, longevity of
> mask data sheet says 9 months is this realistic.
>
> Steve Collins
> PCB Design Supervisor
> Antec Corporation
>
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