Ian Field wrote in message
...


"N_Cook" wrote in message
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So if the active surface of this pic , (different internals to the one I
have looked at )
http://img98.imageshack.us/img98/754...cc5bb59e9b.jpg
is the uppper part of the die then the same grey granular appearance


The "active surface" is a channel through the die, there's a tiny aperture
in the middle of that "granular surface".


Smaller than the resolution of that photo or the small blackish rectangle on
the end of the "bar" that ends flush with the granular surface, on a line
between the centres of the end faces of the conductor pins.
Dimensions of that rectangle about one of those wires diameter x about 4
wire diameters