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Re: Long term stability of matched resistors?

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John Larkin <jjlarkin@highlandtechnology.com> wrote:
>On 13 Feb 2017 09:33:22 GMT, "Peter Heitzer"
><peter.heitzer@rz.uni-regensburg.de> wrote:

>>If I select metal foil resistors with 1% tolerance so that they match
>>to 0.1% can I expect that the matching keeps stable for a longer time
>>or will the values drift sooner or later to their 1% tolerance?
>>In other words: Do I need resistors with 0.1% initial tolerance for
>>long term 0.1% matching?

>We've been impressed with the long-term stability of the Susumo
>surface-mount thinfilm resistors. Some of our products that depend on
>them are showing drifts of low tens of PPMs per year, with lots of
>other things contributing.

>What specific resistor types did you have in mind?

Just ordinary metal film types like vishay CCF55 
(http://www.vishay.com/docs/31015/ccf55.pdf)
or thick film chip resistors with tempco of 100 ppm.
I do not develop products, I use them only in hobby projects.

-- 
Dipl.-Inform(FH) Peter Heitzer, peter.heitzer@rz.uni-regensburg.de

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Long term stability of matched resistors? "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2017-02-13 09:33 +0000
  Re: Long term stability of matched resistors? Phil Allison <pallison49@gmail.com> - 2017-02-13 03:10 -0800
    Re: Long term stability of matched resistors? "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2017-02-13 15:27 +0000
  Re: Long term stability of matched resistors? Chris Jones <lugnut808@spam.yahoo.com> - 2017-02-14 00:02 +1100
  Re: Long term stability of matched resistors? Steve Goldstein <sgoldHAM@alum.mit.edu> - 2017-02-13 08:30 -0500
  Re: Long term stability of matched resistors? Spehro Pefhany <speffSNIP@interlogDOTyou.knowwhat> - 2017-02-13 08:55 -0500
  Re: Long term stability of matched resistors? John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-13 08:43 -0800
    Re: Long term stability of matched resistors? "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2017-02-13 17:22 +0000
      Re: Long term stability of matched resistors? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-02-13 10:23 -0800
      Re: Long term stability of matched resistors? Marte Schwarz <marte.schwarz@gmx.de> - 2017-02-14 20:02 +0100
        Re: Long term stability of matched resistors? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-02-14 11:16 -0800
          Re: Long term stability of matched resistors? Marte Schwarz <marte.schwarz@gmx.de> - 2017-02-14 22:45 +0100
            Re: Long term stability of matched resistors? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-02-14 14:52 -0800
              Re: Long term stability of matched resistors? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-14 15:13 -0800
                Re: Long term stability of matched resistors? George Herold <gherold@teachspin.com> - 2017-02-14 16:35 -0800
                Re: Long term stability of matched resistors? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-14 16:47 -0800
                Re: Long term stability of matched resistors? George Herold <gherold@teachspin.com> - 2017-02-14 17:29 -0800
                Re: Long term stability of matched resistors? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-14 17:45 -0800
                Re: Long term stability of matched resistors? George Herold <gherold@teachspin.com> - 2017-02-14 18:17 -0800
                Re: Long term stability of matched resistors? John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-14 18:37 -0800
              Re: Long term stability of matched resistors? Marte Schwarz <marte.schwarz@gmx.de> - 2017-02-15 09:48 +0100
                Re: Long term stability of matched resistors? George Herold <gherold@teachspin.com> - 2017-02-15 07:12 -0800
                Re: Long term stability of matched resistors? bill.sloman@ieee.org - 2017-02-15 20:15 -0800
                Re: Long term stability of matched resistors? John Larkin <jjlarkin@highlandtechnology.com> - 2017-02-15 20:28 -0800
                Re: Long term stability of matched resistors? George Herold <gherold@teachspin.com> - 2017-02-16 06:32 -0800
                Re: Long term stability of matched resistors? John Larkin <jjlarkinxyxy@highlandtechnology.com> - 2017-02-16 09:56 -0800
                Re: Long term stability of matched resistors? Lasse Langwadt Christensen <langwadt@fonz.dk> - 2017-02-16 11:08 -0800
                Re: Long term stability of matched resistors? bill.sloman@ieee.org - 2017-02-16 18:10 -0800
                Re: Long term stability of matched resistors? jack4747@gmail.com - 2017-02-16 02:19 -0800
                Re: Long term stability of matched resistors? Jasen Betts <jasen@xnet.co.nz> - 2017-02-18 09:50 +0000
  Re: Long term stability of matched resistors? "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2017-02-16 09:26 +0000
    Re: Long term stability of matched resistors? jack4747@gmail.com - 2017-02-16 02:22 -0800
      Re: Long term stability of matched resistors? "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2017-02-16 16:04 +0000
        Re: Long term stability of matched resistors? jack4747@gmail.com - 2017-02-16 08:19 -0800

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