Jetson Orin Nano 3D Module Selection for Custom Thermal Design

Issue Overview

Users are encountering confusion regarding the correct 3D module to reference for the Nvidia Jetson Orin Nano. The issue arises during the design phase, particularly when considering custom thermal solutions. Two different 3D STEP models are available for download, each with distinct dimensions:

1. Jetson_Orin_Nano_DevKit_3D_STEP_Model (H=3)
2. Jetson_Orin_NX_Orin_Nano_Module_3D_STEP_Model (H=5.08)

The discrepancy in height measurements (3mm vs 5.08mm) has led to uncertainty about which model should be used as a reference for design purposes. Additionally, the datasheet (DS) for Jetson_Orin_Nano_DS-11105-001_v0.2 specifies a height of 5.08mm, further complicating the selection process.

Possible Causes

1. Lack of Clear Documentation: The availability of multiple 3D models without explicit guidance on their intended use may have led to confusion.

2. Different Product Variants: The existence of both a development kit and a standalone module could explain the variation in dimensions.

3. Version Discrepancies: Potential updates or revisions to the product design might have resulted in different 3D models being available.

4. Intended Use Variation: The different models may be designed for specific purposes (e.g., general reference vs. thermal design), leading to dimensional differences.

Troubleshooting Steps, Solutions & Fixes

To address the confusion and ensure proper reference for custom thermal design, follow these steps:

1. Identify the Correct Model:

   • For custom thermal design purposes, use the Jetson_Orin_NX_Orin_Nano_Module_3D_STEP_Model with H=5.08mm.
   • This model aligns with the dimensions specified in the datasheet (DS) Jetson_Orin_Nano_DS-11105-001_v0.2.

2. Understand Model Differences:

   • The Jetson_Orin_Nano_DevKit_3D_STEP_Model (H=3mm) represents the development kit version.
   • The Jetson_Orin_NX_Orin_Nano_Module_3D_STEP_Model (H=5.08mm) represents the standalone module.

3. Apply Correct Reference for Thermal Design:

   • When designing custom thermal solutions, always refer to the module model (H=5.08mm).
   • This ensures compatibility with the actual product dimensions and thermal characteristics.

4. Consult Official Documentation:

   • Review the latest Jetson Orin Nano datasheet and technical specifications on the NVIDIA website.
   • Look for any application notes or design guides specifically related to thermal management.

5. Verify Dimensions:

   • If possible, physically measure a Jetson Orin Nano module to confirm the 5.08mm height.
   • Compare measurements with the 3D model to ensure accuracy.

6. Seek Official Clarification:

   • If any doubts persist, contact NVIDIA support or post a question on the official Jetson developer forums.
   • Provide the specific model numbers and dimensions you’re working with to get accurate guidance.

7. Best Practices for Future Designs:

   • Always use the most recent 3D models and documentation available from NVIDIA.
   • When multiple models are available, prioritize those specifically labeled for the standalone module rather than development kits.
   • Keep track of any updates or revisions to the Jetson Orin Nano specifications that might affect your design.

By following these steps and using the correct 3D model (H=5.08mm) for the Jetson Orin Nano module, you can ensure that your custom thermal design will be compatible with the actual hardware dimensions and specifications.