Where can I find a replacement for LM4040BIZ-10.0 voltage regulator?

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Discussion Overview

The discussion revolves around finding a replacement for the LM4040BIZ-10.0 voltage regulator. Participants explore options for similar integrated circuits (ICs) that maintain the same parameters and pin design, while also considering alternative configurations if necessary.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant expresses difficulty in matching the LM4040BIZ-10.0 voltage regulator and seeks assistance in finding a suitable replacement.
  • Another participant requests clarification on the initial inquiry, indicating a lack of understanding of the question posed.
  • A participant asks for alternative ICs that match the parameters of the LM4040 10V and preferably share the same pin design, acknowledging their limited expertise.
  • A suggestion is made to use the Digikey website to filter for parts matching specific criteria, including tolerance, package type, and operating temperature, with a note that the exact part may only be available in bulk.
  • It is proposed that if the TO92 package filter is removed from the search, various SOT23 package options may be available, with a caution to connect the pins correctly according to the datasheet.

Areas of Agreement / Disagreement

The discussion remains unresolved, with participants expressing different levels of understanding and varying suggestions for potential replacements without reaching a consensus on a specific alternative.

Contextual Notes

Participants have not established a clear set of assumptions or criteria for the replacement, and there may be dependencies on specific definitions of parameters and package types that are not fully articulated.

Moomba77
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I am trying to replace a voltage regulator with an, as of yet, unavailable LM4040BIZ-10.0. I would like to keep the same pin design, but can work with a modified connection if I must. I am not a hobbyist, just a guy that likes to keep things working. I went through a few datasheets and must admit that it is way above my skills to match this part.

After looking through the conversations here, I think this is the place to be. Thank you for any help.
 
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Is there another IC that has the same parameters as the LM4040 10v and preferably the same pin design? Again, please excuse my ignorance.

I am armed with a schematic, multimeter and a soldering iron...usually it's enough for me, but I can't find the part to replace what I have found to be defective.
 
Go to www.digikey.com

1 - Search for LM4040
2 - Use their part filtering to select 0.2% (that is what the B denotes), TO92 package (that is what the Z denotes), -40C ~ 85C operating temperature (that is what the I denotes), and 10V.

You will see that they have your exact part but only available in bulk...call them as see if they will sell you a single part.

If that doesn't work out, remove the TO92 filter from the search and you will see many SOT23 package choices. You can use the SOT23, just hook up the (+) and (-) appropriately (look at diagram in datasheet).
 

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