Yep, it depends upon the particular field when mils are commonly used.. and
I mentioned a couple of examples.
I've never heard of feeler gage thicknesses expressed as mils, either.. and
yet they are.

IC pin spacings have commonly been specified in decimal/inch dimensions as
far back as I can remember using them, in the '70s.. not as a component or
board designer, just as catalog descriptions and datasheet specs.
But pin spacings in highly compact dimensions are leaning toward metric
dimensions more recently.

The OP is often the only one who has seen a part, and lots of folks seem to
leave out descriptive details, which then require several exchanges of
questions to get an idea of what the original question was.

Just sayin'

--
WB
..........


"DoN. Nichols" wrote in message
...
On 2012-01-27, Wild_Bill wrote:

[ ... ]

When you say "mils" while talking about dimensions of parts, it's unclear
what sizes you're trying to describe.

Mils are common to film thicknesses.. heavy duty trash bags are 3 mils,
or
coatings thicknesses/paint coatings etc.

[ ... ]

Mils are thousandths-of-an-inch, but 0.118" isn't expressed as 118 mils..
and 0.118" would be smaller than 1/8" in diameter.
Maybe you're referring to the diameter of the pins, but it's not really
clear.. 3mm is 0.1181").

Why not? The spacing of leads on the old DIP chip packages were
specified as 100 mils (0.100"). It all depends on the field. Some use
mils just as he has apparently used them.

Enjoy,
DoN.

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