How to place thermal vias in PCB

[vivek20055]

Hi,

How can I place thermal vias in my pcb.


Regards,
Vivek Alaparthi

 

[arbabar]

heat sinker is independent of pcb design circuit........

 

[Mattylad]

It all depends what software you are using to place them and why/how you want them.
I.E. are they to be part of a component or do you want them as stitching vias between planes?

 

[praveenlb]

It depends on your Thermal requirement . each component has its own thermal dissipation factor please check the data sheet. If you like to see exactly you have to simulate with tool. you have to use thermal via must in some cases. near high power dissipation section on your PCB.

 

[marce]

They are usually placed in the pad that forms the thermal ink to the PCB for the chip, i.e. the big pad at the bottom of many components especially leadless devices.
http://www.cirrus.com/en/pubs/appNote/AN315REV1.pdf
http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=sloa120
**broken link removed**
plent more info out there...