Frequency converter heat sinks. Will it work? - Page 2

KatieandDad · 10:29 PM

The nature of the heatsink is that it will not be very good at dissipating point loads due to the thin fins and the even thickness of the base.

You will need to help it along by spreading the heat sources across the heatsink.

If you calculate the actual area of each fin with all the fins it will be better than 0.5 Deg C/Watt. However, as the fins are very thin at their bases the heat will not travel up the fins very well.

The ideal Heatsink should have thick roots and thinner tips.

NSP · 26th July 2012, 02:35 PM

Yes I noticed that directly when I got them that the thickness of the fins are even and I thought that doesn't matter, but now when you are saying it makes perfect sense that they are not optional.

Well I think I'll go on and give them a try. If they overheat then I know not to use sinks like these. Who lives shall see.

atarashi · 26th July 2012, 02:57 PM

Ah, they look like they where designed for forced airflow.

so mount them close together and but a fan below and be happy!

Michael

NSP · 26th July 2012, 05:05 PM

Yeah I think so too. Hmm, I don't think fans would be a option for me because the heat sinks will be visible from the outside of the chassis. Would be kinda odd looking. :P

atarashi · 26th July 2012, 05:43 PM

On the outside yes, but not if you mount them on the inside...

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26th July 2012, 02:35 PM	#12
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	Yes I noticed that directly when I got them that the thickness of the fins are even and I thought that doesn't matter, but now when you are saying it makes perfect sense that they are not optional. Well I think I'll go on and give them a try. If they overheat then I know not to use sinks like these. Who lives shall see.

26th July 2012, 02:57 PM	#13
atarashi diyAudio Member Join Date: Jun 2005 Location: Vienna	Ah, they look like they where designed for forced airflow. so mount them close together and but a fan below and be happy! Michael

26th July 2012, 05:05 PM	#14
NSP diyAudio Member Join Date: Nov 2007 Location: Vasa	Yeah I think so too. Hmm, I don't think fans would be a option for me because the heat sinks will be visible from the outside of the chassis. Would be kinda odd looking. :P

26th July 2012, 05:43 PM	#15
atarashi diyAudio Member Join Date: Jun 2005 Location: Vienna	On the outside yes, but not if you mount them on the inside...