Added TO-46-4 + ThermalShield for LM399
This is the footprint for the Analog Devices LM399. It comes in a TO-46-4 package but is inside an enclosure made of Polysulfone.
This PR comes with the footprint PR over here : https://github.com/KiCad/kicad-symbols/pull/1548. I will also add the 3d model as soon as I have updated it according to the design rules. Should take a day or so.
The first pad is oval, because this makes soldering easier than the rectangular version and the current TO-46-4 package has an oval pad for pin 1 as well.
Screenshot:
All contributions to the kicad library must follow the KiCad library convention
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Provide a URL to a datasheet for the footprint(s) you are contributing -
An example screenshot image is very helpful -
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