# SL808 - PCB data

**URL:** <https://forum.sierrawireless.com/t/sl808-pcb-data/7218>\
**Category:** Legacy AirPrime modules\
**Created:** [May 23, 2014, 2:52pm UTC](https://forum.sierrawireless.com/t/sl808-pcb-data/7218 "2014-05-23T14:52:30Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![GautierLouchart](https://avatars.discourse-cdn.com/v4/letter/g/34f0e0/32.png) [@GautierLouchart](https://forum.sierrawireless.com/u/GautierLouchart)\
**Post date:** [May 23, 2014, 2:52pm UTC](https://forum.sierrawireless.com/t/sl808-pcb-data/7218/1 "2014-05-23T14:52:30Z")

</div>

Hi,  
I am building an as detailled as possible SL808 module in order to verify the thermal behaviour. I will have to run a thermal simulation in an automotive environement.  
I miss information about the module PCB itself. Here are my needs:

- How many layers?
- What is the copper thickness for each?
- What is the copper coverage percentage for each?
- How many vias passing completely through this PCB?
- What are the internal and external diameter of vias?  
Those information are mandatory to be able to calculate the thermal conductivity in plane and through the PCB.  
Thank you!

---

<div class="post-metadata">

**Author:** ![Moderator1](https://avatars.discourse-cdn.com/v4/letter/m/9fc348/32.png) [@Moderator1](https://forum.sierrawireless.com/u/Moderator1)\
**Post date:** [May 28, 2014, 10:02am UTC](https://forum.sierrawireless.com/t/sl808-pcb-data/7218/2 "2014-05-28T10:02:31Z")

</div>

Topic moved to the correct section…