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   sci.electronics.basics      Elementary questions about electronics      72,318 messages   

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   Message 70,557 of 72,318   
   Adam Funk to George Herold   
   Re: Using a TO-220 heat sink   
   01 May 18 14:01:12   
   
   From: a24061@ducksburg.com   
      
   On 2018-04-26, George Herold wrote:   
      
   > On Thursday, April 26, 2018 at 5:30:07 AM UTC-4, Adam Funk wrote:   
   >> Hi,   
   >>   
   >> To attach an LM317 (for example) in the TO-220 format to the   
   >> corresponding heat sink (see link below), is it useful to apply any   
   >> thermal paste in addition to the flexible mat that comes with the heat   
   >> sink?   
   >>   
   >>    
   >>   
   >> Thanks.   
      
   > How much heat are you dissipating?  (can you float the heat sink?)   
   > I usually don't use any thermal paste with a sil pad.   
      
   The LM317 will only be powered for short periods, so it probably   
   doesn't matter match.   
      
      
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