A Deceptive Thermal Question for PCB Layout?
This is for you Printed Circuit Wizards
Here is my problem in a White LED layout, See first picture
- Trying to pass excess LED heat to back side copper through VIAs
- I know the larger the VIA Dia the lower the thermal impedance.
- Intuitively as the hole grows it will eventually make heat transfer much worse
What or how do I find the OPTIMUM VIA Diameter for Heat TRANSFER ??