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???
09/04/10 09:51
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 		 #178439 - Searching for Datasheets
Responding to: ???'s previous message
Chico Magalhães said:
... searched all over internet for the datasheet... found NOTHING!

Really??

http://www.lmgtfy.com?q=lm78h05k - lots of hits!


The nearest I got was
UA78H05 - http://www.datasheetcatalog.org/datasheet...063_DS.pdf
and
78H05A - http://www.datasheetcatalog.org/datasheet...064_DS.pdf

They are probably sufficient: "78H05" is a pretty generic type number, to which manufacturers add their own specific suffix & prefix codes (letters & numbers)

There is some other place I can search for?

See above - for "generic" parts like this, search on the "generic" bit of the part number

Some trick?

The trick is to never buy anything before you've actually got the Datasheet!

I would also be very wary of any supplier that can't provide datasheets...

The component has this writings: H4D0452A LM78H05K -MIL.

What manufacturer name/logo is on it?
Go to the website of that manufacturer and search there!


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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