Talk:Thermal resistance

From Wikipedia, the free encyclopedia
Jump to: navigation, search
WikiProject Physics (Rated Start-class, Low-importance)
WikiProject icon This article is within the scope of WikiProject Physics, a collaborative effort to improve the coverage of Physics on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
Start-Class article Start  This article has been rated as Start-Class on the project's quality scale.
 Low  This article has been rated as Low-importance on the project's importance scale.

Thermal resistance[edit]

Here it says

   RθJC = 1.5 K/W (for a typical TO-220 package)
   RθB = 0.1 K/W (a typical value for an elastomer heat-transfer pad for a TO-220 package)

I think the values ar more like 100K/W - 10K/W. Here is an example I'm trying to find one that has those properties. --(unsigned edit was by ) Zuperman 2007-05-30T09:44:01

No, 1.5K/W is OK: I've seen a TO-220 regulator one with 3K/W also. The one in BS129-16.pdf has a lower power case style. Kallog 13:24, 24 June 2007 (UTC)

Cleanup tag status[edit]

There's been lots of cleanup since 2006 - is it time to remove the cleanup tag? It looks pretty good to me. --Lexein (talk) 22:22, 19 March 2010 (UTC)

I think the example calculation section is still over complicated. But yea apart from that. Kallog (talk) 01:49, 20 March 2010 (UTC)
Agreed. That cleanup tag was a hit & run - the user didn't make any edits. --Lexein (talk) 02:23, 20 March 2010 (UTC)

example confused[edit]

The formula in the example does not match the formula with numbers substituted. The latter doesn't have deltaThs but has Rha. Also the concept of deltaThs is not clear. Hoemaco (talk) 07:27, 5 April 2011 (UTC)

Agreed. DeltaThs from the formula is not in the example. More importantly, Deltahs shouldn't be in the equations anyway, as this is accounted for by Q*Rha (i.e. = the temperature drop across the heatsink). Comment that "THS appears to be undefined." in earlier paragraph may be eluding to this. — Preceding unsigned comment added by ASearcher (talkcontribs) 19:14, 20 March 2013 (UTC)

Requested move to Thermal resistance[edit]

The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section.

The result of the move request was: page moved. Vegaswikian (talk) 22:03, 21 September 2011 (UTC)

Thermal resistance in electronicsThermal resistance – most of the article is about thermal resistance - not specifically electronics. Only one paragraph is specifically about electronics. --Glenn (talk) 18:48, 14 September 2011 (UTC)

  • Support, Reasonable to have main articles before sub-articles. Marcus Qwertyus 03:12, 15 September 2011 (UTC)
The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.

Units are not consistent[edit]

Can anyone tell me why meters squared are included?

Keeping them would make calculations & understanding

so much easier.

But nobody else does that

except the thermal resistance page & the thermal conduction page.

The thermal conductivity page does not have meters squared

for thermal resistance or thermal conductance. (talk) 02:00, 4 July 2014 (UTC)

Peter Sheedy

I agree this needs to be fixed. The m2 should not be there. — Preceding unsigned comment added by (talk) 01:33, 5 February 2015 (UTC)