pcb - Do QFNs really need that thermal pad? - Electrical
![](https://i.stack.imgur.com/egesO.jpg)
Often a chip will be available in several different packages. Sometimes QFN which has a thermal pad, and TQFP which has no thermal pad. The justification for the thermal pad is that it helps conduc
![](https://i.stack.imgur.com/eYXIH.png)
Will PCB board house accept this QFN thermal pad via design (KiCad
![](https://e2e.ti.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/151/pastedimage1640192851002v1.png)
FAQ] Where do I connect the thermal pad of the logic QFN devices
![](https://www.researchgate.net/publication/317569529/figure/fig1/AS:504836010332182@1497373692904/Schematic-illustration-of-simplified-single-die-QFN-package.png)
Schematic illustration of simplified single die QFN package
![](https://www.mdpi.com/applsci/applsci-13-12653/article_deploy/html/images/applsci-13-12653-g011.png)
Applied Sciences, Free Full-Text
![](https://www.goldphoenixpcb.com/ueditor/php/upload/image/20220825/1661408048209607.png)
The Ultimate Guide to QFN Package
![](https://www.mdpi.com/applsci/applsci-13-12653/article_deploy/html/images/applsci-13-12653-g003.png)
Applied Sciences, Free Full-Text
![](http://lh6.ggpht.com/_SZkwQMJVaZM/TJEvsvea4uI/AAAAAAAAApQ/Q30wL8ewJDk/TPS61202%20footprint.jpg)
basics of thermal pad / power pad footprint creation - PCB Design
![](https://d3i71xaburhd42.cloudfront.net/63c4c34d3d3e8bb8c79f2bfb0ffb9fba9349fa4a/2-Figure5-1.png)
Figure 5 from Solder paste optimization in thermal pad padstack
![](http://www.surfacemountprocess.com/uploads/5/4/1/9/54196839/7327034_orig.jpg)
QFN package question
![](https://aimsolder.com/sites/default/files/qfn_fig1.jpg)
Overcoming the Challenges of the QFN