Good day to all,

Does anyone know of or have a formula for calculating the "natural" thermal
(heat) dissipation of an external plane area for 1 oz FR4 based material.
We are in the process of using an external (Primary or Secondary) layer heat
sink plane for a regulator type device on a multi layer design and require a
means of calculating the required area based on its power requirements.
This design is for a general / commercial Class 1 or 2 application using
convection type heat dissipation supplemented with a forced (fan)
convection.

Any help would be greatly appreciated.

Regards, Greg.

Gregory E. Bordash,
Team Leader, PCB CAD Group
ATI Technologies Inc.,
33 Commerce Valley Drive East,
Thornhill, Ontario, Canada, L3T 7N6
Phone:(905) 882-2600 ext: 8370,   Fax: (905) 882-9339
Email: [log in to unmask]