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???
09/04/10 15:02
Modified:
  09/04/10 15:02
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 		 #178441 - Fairchild was the original manufacturer
Responding to: ???'s previous message
For that reason, I would first rely on Fairchild's datasheet. In the days when this number was released, it was customary for "second-source" manufacturers to duplicate the orignal device precisely and to change the part number if they added any "enhancements."

NSC, among others, second-sourced this device, but the ones I have on hand are Fairchild, which leads me to believe I have the physical datasheet somewhere.

NSC also made a 10-amp version, the LM78P05K. Note that the K is the TO-3 package designation. The LM prefix indicates it's a National Semiconductor part, just as the uA prefix indicates it's from Fairchild.

RE

List of 21 messages in thread
TopicAuthorDate
LM78H05K Datasheet really exists?            01/01/70 00:00      
   Searching for Datasheets            01/01/70 00:00      
      photo            01/01/70 00:00      
         Yes, that's National Semiconductor            01/01/70 00:00      
            You are right again...            01/01/70 00:00      
               I think the "H" may be because it is 5A isnt it?            01/01/70 00:00      
                  from the days of burning your fingers            01/01/70 00:00      
                      I fail to see a modern design needing that amount...            01/01/70 00:00      
                        qualify            01/01/70 00:00      
                           Still need for power - but varying voltages and low loss            01/01/70 00:00      
                           12V the big favourite in a PC            01/01/70 00:00      
                     Killed off by switchers            01/01/70 00:00      
                        The heat was always a challenge with high-power linears            01/01/70 00:00      
                  Disapointed but clear.            01/01/70 00:00      
                     How so?            01/01/70 00:00      
                     You can make your own ...            01/01/70 00:00      
                        re: You can make your own            01/01/70 00:00      
                           Yes, they did, and those sheets were excellent!            01/01/70 00:00      
   the first mistake            01/01/70 00:00      
   Fairchild was the original manufacturer            01/01/70 00:00      
   these parts are hybrids ... so you can synthesize them            01/01/70 00:00      

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