Tagged Questions
6
votes
3answers
314 views
SOT-223 Thermal Pad and Vias
I am using a LDO with a SOT-223 footprint and since it might get hot, I wanted to make a nice thermal pad under it to dissipate that heat.
I googled and I only found thermal pads, but i wanted some ...
3
votes
1answer
158 views
LM3876 Heatsink
Could someone point me to a suitable heatsink for an LM3876 amplifier? Or, even better, a heatsink that I could attach two chips to? Perusing through Mouser's catalog was a bit overwhelming.
...
14
votes
3answers
1k views
How do I determine the area of copper needed on a PCB to provide adequate heatsinking for a power SMD MOSFET?
I am planning to use the IRFR5305PBF Power MOSFET (http://www.irf.com/product-info/datasheets/data/irfr5305pbf.pdf) to switch on a load. I have determined that I need an external heatsink with Rthsa ...
5
votes
1answer
215 views
How to correctly apply thermal compound to ICs and heatsinks?
From http://en.wikipedia.org/wiki/Thermal_grease
All these compounds conduct heat far better than air, but far worse than metal. They are intended to fill gaps that would otherwise hold air, not ...
0
votes
2answers
1k views
TO-220 case-to-sink thermal resistance
I'm using a KSC1173 TO-220 power transistor in a design, and I need to calculate the case temperature for the maximum average power dissipation, to see if the power dissipation falls under the ...
3
votes
4answers
863 views
Heat transfer in an airtight enclosure (component -> internal ambient -> heat sink on case?)
Are the thermal resistance values of heat sinks/etc reasonably reversible? If I wanted to dissipate an internal ambient temperature rise, could I use an internal heat sink on the enclosure wall ...
