07-16-2016, 10:57 AM
(07-16-2016, 04:28 AM)palegreenthumb Wrote: Wow Russ, hard to believe that's the same radio!
What's your take on casting 2W resistors into dogbone molds? Are they still able to dissipate 2W, or are they derated a bit?
I have been doing this for years now. I have only had one get hot enough to damage the molded material and it was the result of another failure. The idea is that you replace a 1/2w with a 2W or larger to better dissipate any heating, most of which leaves by way of the leads anyway.
But, yes. I would not run them at 2w. I have used 3.8w wire-wound when I thought heat would be a problem. This increases the cost by about 10X. These resistors (the ww) are the same size as a 2w metal (blue) so are sized to cast into a 1/2w dogbone or larger.