In many stacked-die package designs, a spacer is introduced between dies to create a defined separation within the die stack. This is commonly seen when stacking dies of different sizes, meeting assembly stack-up requirements, or providing clearance for package structures between the dies. Steps Open Setup > Cross-section and add a new layer below the required die layer. Set the new layer's Function to Dielectric and assign a unique Layer ID (for example, D2 ). Verify that the layer is visible in the Visibility pane. Select Add > Spacer and define the spacer properties, including material, thickness, and dimensions. Specify the spacer size either manually or using the Shrink Factor option based on the die dimensions. Place the spacer in the design and verify its position in Edit > Die Stack , making any alignment adjustments as needed. Have you encountered a package design where a spacer was required to meet die-stack, assembly, or clearance requirements? Share your use case in the comments.

Stats

State Not Answered
Replies 0
Subscribers 68
Views 72
Members are here 0

How to Add a Spacer Between Two Stacked Dies in Allegro X APD?

In many stacked-die package designs, a spacer is introduced between dies to create a defined separation within the die stack. This is commonly seen when stacking dies of different sizes, meeting assembly stack-up requirements, or providing clearance for package structures between the dies.

Steps

Open Setup > Cross-section and add a new layer below the required die layer.
Set the new layer's Function to Dielectric and assign a unique Layer ID (for example, D2).

Verify that the layer is visible in the Visibility pane.
Select Add > Spacer and define the spacer properties, including material, thickness, and dimensions.
Specify the spacer size either manually or using the Shrink Factor option based on the die dimensions.

Place the spacer in the design and verify its position in Edit > Die Stack, making any alignment adjustments as needed.

Have you encountered a package design where a spacer was required to meet die-stack, assembly, or clearance requirements? Share your use case in the comments.

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.