Can I create chip components with one click?

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   Given the fact that 0805[2012] size is always 0805[2012], is there a way of creating a footprint for 0805[2012], or any other size for that matter, with one click?
I mean, I'm trying to create some standard size chip cap and res footprints but I see that I should specify the size of the component, but 0805[2012] is 0805[2012] so why isn't there an option to just generate that footprint with one click? Or is that option there and I'm missing it?

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m4l490n Members Profile Send Private Message Find Members Posts Add to Buddy List New User Joined: 03 Jun 2021 Status: Offline Points: 2	Post Options Post Reply Quote m4l490n Report Post Thanks(0) Quote Reply Topic: Can I create chip components with one click? Posted: 11 Jan 2022 at 11:07am
	Given the fact that 0805[2012] size is always 0805[2012], is there a way of creating a footprint for 0805[2012], or any other size for that matter, with one click? I mean, I'm trying to create some standard size chip cap and res footprints but I see that I should specify the size of the component, but 0805[2012] is 0805[2012] so why isn't there an option to just generate that footprint with one click? Or is that option there and I'm missing it?



Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 11 Jan 2022 at 2:29pm
	The package height is a problematic issue. An 0805 [2012] Capacitor has 20 different heights. This impacts the 3D model more than anything. The various types such as Resistor, Inductor, Capacitor, Diode all the different 3D model shapes. Different vendors have different terminal lead lengths and different package tolerances. All of these impact the resulting pad stacks. Bottom line is that the Footprint Expert cannot throw out random dimensional values, Here are some sample Chip Packages of some random parts - uploads/3/CHIPS.zip
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jgregoire Members Profile Send Private Message Find Members Posts Add to Buddy List Active User Joined: 19 Jan 2017 Status: Offline Points: 31	Post Options Post Reply Quote jgregoire Report Post Thanks(0) Quote Reply Posted: 31 Jan 2022 at 10:02am
	It is possible to create a generic 0805 footprint that will work OK for almost all parts, but you need to do so with care, and you should check it against every new component you use it for. "0805 is 0805" is not a true statement. For instance, the popular Vishay CRCW0603 and CRCW0603...HP resistors are not the same size, and both are narrower than the Panasonic ERJ-3 series. Terminal sizes and gaps vary significantly. A generic one-size-fits-all footprint will naturally end up larger than usually needed, which impacts placement density.

Tom H Members Profile Send Private Message Find Members Posts Add to Buddy List Admin Group Joined: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5718	Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 31 Jan 2022 at 10:29am
	If you use 3D models, the 0805 Resistor, Capacitor, Inductor, Diode, LED, etc. are totally different from each other. You can create on 0805 Footprint for each component family by using the same dimensions and tolerances. Height is the only value that will be variable, and it will affect all the 3D STEP models. Then you think you will just use the worst-case Height to cover all 0805's but the variations are really different between component families.
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