XPost: sci.electronics.repair, sci.electronics.components   
   From: dit3_werkt_ook_niet@hotmail.com   
      
   On Thu, 14 Feb 2008 11:49:42 -0600, msg  wrote:   
      
   >James Sweet wrote:   
   >   
   >> "Camsid"  wrote in message news:fp16jb$56p$1@aioe.org...   
   >>   
   >>>I have tons of 2N5038 150V 30Amps, many other TIP32x.  Wiki said NPN is so   
   >>>much better than PNP's I know that but I still want to do some experiment.   
   >   
   >I wonder what wiki?   
   >   
   >> One is not "better" than the other, but rather some applications call for   
   >> NPN, some for PNP, and others require both. It depends what you're doing.   
   >   
   >Depending on the wiki, perhaps the reference was historical; in the late   
   >1950's -> early 1960's there was a lot of buzz about new 'mesa' NPN   
   transistors   
   >which had hugely improved characteristics over previous mostly PNP processes.   
   >   
   >Michael   
      
   Stille there are some small differences. Compare the end 70's   
   transistors like BC547/BC557, and you will see that the NPN one   
   usually has somewhat more bandwidth or other better parameters. I was   
   taught that the NPN's tend to be (this is not a rule) a little more   
   robust when you overload them. I haven't check the latest transistors.   
      
   Pieter   
      
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