Is 3D view of a Cavity in PCB possible?

Modified by on Jun 12, 2021

I would like to display my component in 3D while it is placed within a cavity, is this possible?

Applicable Versions: 19, 19.1, 20, 20.1, 20.2, 21

Solution Details

In order to identify a cavity and have the 3D visualization, first place a region where the cavity should be on a mechanical layer within the PCBLib. Then change the Kind attribute of the region on the mechanical layer to 'Cavity definition', and define the desired height of the cavity as it would be from layer to layer(if you want to completely expose the area or cavity you can set a very large height). You will see these options in the Properties panel if you select the region that is placed on the mechanical layer. This height defines the distance that the software will remove all layers above the surface of the copper layer that the component is placed on. You can use an additional mechanical layer for the cavity if you want to maintain separation for the callout layer for your board house. You can also add a 3D body to this component.

Once the cavity has been defined for the component, you will essentially place the component on an inner layer(whatever layer the component should be on) and the orientation that the height will extend will depend on the orientation defined in the layer stack manager. Keep in mind only signal layers(positive layers) can have a component placed on them. So if you are using an Internal Plane(Negative layer) and wanted to place components on this layer, you would have to change that layer to a signal layer(then flood a copper pour on the layer to re-create the plane on the positive layer),

Next, within the Layer Stack Manager of a PCB, if you select a layer you will see an 'Orientation' in the Properties panel of the Layer Stack Manager. So if you placed the component on a signal layer 2 for example, if the orientation is set to Top, then the height will cut the copper towards the top layer and vice versa if the orientation is set to bottom.

To simplify the interaction between the cavity and the layers that it cuts through, the software ensures that a layer is not partially cut. If a cavity enters into a layer, such as a dielectric layer, but does not extend all the way through that dielectric layer, then the software automatically extends the cavity all the way through that layer.

You would still need to identify the desired location for your fab house, in addition to defining the cutout. You can also put an additional set of lines around the boundary of the cutout on a secondary mechanical layer to call out the area for your fab house.

Here is a good reference on the topic:
https://www.altium.com/documentation/altium-designer/embedded-components-ad
Was this article helpful?
0
0
Found an issue with this document? Highlight the area, then use Ctrl+Enter to report it.

Contact Us

Contact our corporate or local offices directly.

We're sorry to hear the article wasn't helpful to you.
Could you take a moment to tell us why?
You are reporting an issue with the following selected text
and/or image within the active document:
ALTIUM DESIGNER FREE TRIAL
Altium Designer Free Trial
Let’s get started. First off, are you or your organization already using Altium Designer?

If would like to speak with a representative, please contact your local Altium office.
Copyright © 2019 Altium Limited

In that case, why do you need an evaluation license?

If would like to speak with a representative, please contact your local Altium office.
Copyright © 2019 Altium Limited

Got it. You actually don’t need an evaluation license for that.

Click the button below to download the latest Altium Designer installer.

Download Altium Designer Installer

If would like to speak with a representative, please contact your local Altium office.
Copyright © 2019 Altium Limited

Please fill out the form below to get a quote for a new seat of Altium Designer.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.

If you are on Altium Subscription, you don’t need an evaluation license.

If you are not an active Altium Subscription member, please fill out the form below to get your free trial.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.

Why are you looking to evaluate Altium Designer?

If would like to speak with a representative, please contact your local Altium office.
Copyright © 2019 Altium Limited

You came to the right place! Please fill out the form below to get your free trial started.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.

Great News!

Valid students can get their very own 6-month Altium Designer Student License for FREE! Just fill out the form below to request your Student License today.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.

Got it. You can download a free Altium Designer Viewer license which is valid for a 6 months.

Please fill out the form below to request one.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.

That’s great! Making things is awesome. We have the perfect program for you.

Upverter is a free community-driven platform designed specifically to meet the needs of makers like you.

Click here to give it a try!

If would like to speak with a representative, please contact your local Altium office.
Copyright © 2019 Altium Limited

Got it. You can download a free Altium Designer Viewer license which is valid for a 6 months.

Please fill out the form below to request one.

By clicking “Get Your Free Trial”, you are agreeing to our Privacy Policy.
You may receive communications from Altium and can change your notification preferences at any time.