As a technician I detest companies that provide proprietary hardware, 
the reason I don't own Apple products.   Hp did this with their early 
test equipment, but the would annually publish a cheat sheet with their 
part numbers and a cross reference for products 5 years old.
If a company is so dang tight-a--ed that they need to guard the secret, 
let them custom order the part with their part number or whatever on it, 
Westinghouse did this in the '70's with a lot of the equipment they 
ordered custom from Burr-Brown, so they made sure you ordered their 
replacement part at their $$$$$$ price, case in point OP amp modules 
designated A1 labeled JT-21.

Usually unless the part is unique as long as one has knowledge of how it 
works it is easy to substitute a suitable replacement.

Just my opinion.

Pat Goodyear semi-retired control tech


On Wed, Oct 15, 2014 at 12:03 PM, Craig Sullivan wrote:

> I have a customer requirement to "apply an electronics grade epoxy 
> over
> component x that will obscure part the part marking." They are trying 
> to
> prevent reverse engineering of their product. There are of course a
> multitude of epoxies, but dispensing onto small ICs, etc., can be a
> challenge.
>
> I know about micro abrasion processes and such but I'm curious how 
> others
> would handle this requirement?
>
>
> Craig Sullivan
>
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