On Tue, 04 Mar 2014 19:07:24 -0800, the renowned John Larkin
wrote:

On Tue, 04 Mar 2014 22:01:38 -0500, Spehro Pefhany
wrote:

On Tue, 04 Mar 2014 16:19:48 -0700, the renowned Jim Thompson
wrote:

Got a request for quoting IBIS model creation, and the potential
client sent his data in .STEP file format.

I have no clue what that is.

I've made IBIS models from PWL files (which I suspect .STEP might be a
form of) and, of course, Spice files.

Any ideas?

...Jim Thompson

Here's the standard: http://en.wikipedia.org/wiki/ISO_10303

Here's what part of the header of a STEP file I made recently in
SolidWorks looks like:


ISO-10303-21;
HEADER;
FILE_DESCRIPTION (( 'STEP AP214' ),
'1' );
FILE_NAME ('LTST_C230_Lite_On_Reverse_Mount_LED_Blue.STEP',
'2014-02-26T05:13:30',
( '' ),
( '' ),
'SwSTEP 2.0',

(and another 230K of stuff)

It is a 3D color solid model of an LED package. Unfortunately, it does
not seem to preserve transparency.


Best regards,
Spehro Pefhany

That's useful, an opaque LED.

It's just a model to see what the PCB will look like and to make sure
there are no collisions with the case features. But you knew that.

The real LEDs are water clear, but I tinted them the color of the
emitted light.

http://www.speff.com/LED.JPG

Don't know why they put the die off-center. I guess it doesn't much
matter if there is no lens.



Best regards,
Spehro Pefhany
--
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