What is difference between LM723 an uA723.

Discussion in 'General Electronics Chat' started by mahammadmahdi, Aug 15, 2015.

  1. mahammadmahdi

    Thread Starter New Member

    Aug 9, 2015
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  2. dl324

    Distinguished Member

    Mar 30, 2015
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    Same part, different manufacturers.

    Replying to old posts is frowned upon on this site... Start your own next time.
     
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  3. mahammadmahdi

    Thread Starter New Member

    Aug 9, 2015
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    thanks dear Dennis
     
  4. DickCappels

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    Aug 21, 2008
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    From memory, uA was originally Fairchild Semiconductor and LM was originally National Semiconductor.
     
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  5. AnalogKid

    Distinguished Member

    Aug 1, 2013
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    uA = micro analog

    LM = linear monolithic

    ak
     
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  6. ian field

    Distinguished Member

    Oct 27, 2012
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    These days its hard to keep track of who bought who out - there's probably no more than about half-dozen left of the original brand names now.

    Recently I picked up a few 1.5Tb Seagate drives cheap, I wasn't happy about Seagate's reputation for atrocious reliability, but they'd been well run in on a RAID box so I decided to take the risk.

    The diagnostics I've run on those drives report that they're actually Samsung.
     
  7. dl324

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    Mar 30, 2015
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    I was just thinking the same... Most of the brands I "grew up" with (Fairchild, Signetics, Motorola, National Semiconductor) are gone. Maybe someone will make a chart of mergers and acquisitions like they did for companies in the Silicon Valley; though for the one I'm thinking of, it was spin offs...
     
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  8. mahammadmahdi

    Thread Starter New Member

    Aug 9, 2015
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    i want built the power supply by lm723 and ca3140 and two 2n3055 for regulatur current neither voltage. 32v-5A .its to shematic was ua723 but to text guide was lm723. after of search in two data sheet. very like was in characteristics . ofcourse lm723 is very much to shops my country.
    again thanks of dears.
     
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