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Hot!DSC6000/DSC6000B MEMS oscillator and helium

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AnalogArsonist
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2019/10/31 13:17:34 (permalink)
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DSC6000/DSC6000B MEMS oscillator and helium

Is there any published information or testing that has been done on the DSC6000/B  in a helium-rich environment? I couldn't find anything related to Microchip's MEMS clocks.
 
Thank you,
 
Ben
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    Antipodean
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/10/31 14:00:54 (permalink)
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    You better look up MIL-STD-883 as that is likely to have a leak rate check in it, and they claim it is qualified to that for shock and vibration.
     
    But why do you want to know? He leak rate is normally used to test the hermetic sealing of a package.

    Do not use my alias in your message body when replying, your message will disappear ...

    Alan
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    dan1138
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/10/31 14:05:07 (permalink)
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    Who knows, but it may have something to do with how to kill an i-p-h-o-n-e with in a helium soak.
    #3
    ric
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/04 15:36:51 (permalink)
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    There's a ghost post in this topic.
    Probably someone trying to quote Anti-podean's post without reading the warning in his signature.
     

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    dan1138
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/04 21:09:17 (permalink)
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    ric
    There's a ghost post in this topic.
    Probably someone trying to quote Anti-podean's post without reading the warning in his signature.



    There are at least two "suppressed" post in this thread.
    I expect it to start flashing at post #18 (if it goes that far).
    #5
    AnalogArsonist
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/06 16:04:01 (permalink)
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    ok lets try this again as delicately as possible.. is this thing on?
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    AnalogArsonist
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/06 16:11:31 (permalink)
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    ok it is a miracle if this works. Both of the ghost posts are mine, I apologize. My application includes up to a conservative 1 atm of helium (vacuum then fill chamber) so yes it is similar to the phone issue mentioned above. The helium was enough to give us problems on another mems product (different manufacturer) in less than ten minutes. If anyone else has tested these mems clocks in a helium environment that would save me the trouble. I should have some parts this week to test and can post results when I do. I also have a ticket in to Microchip to see if they have and/or can share data.
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    ric
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/06 16:51:28 (permalink)
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    I'd never heard of this phenomenon before.
    There's a good write up at
    www.ifixit.com/News/i  phones-are-allergic-to-helium
    but you will have to remove the embedded space, as the full URL triggers the dumb firewall...
     

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    Link
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    Re: DSC6000/DSC6000B MEMS oscillator and helium 2019/11/06 19:44:03 (permalink)
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    Well smoke me a kipper. That was interesting.
    #9
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