freezing of electronics

Discussion in 'Misc Electronics' started by will_usher@yahoo.co.uk, Apr 3, 2006.

  1. Guest

    I'm designing a product that involves freezing of every day car keys.
    The keys that will be frozen are obviously likely to include
    electronics.

    Are there any components inside modern day electronic keys that are
    likely to be damaged by freezing?
    , Apr 3, 2006
    #1
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  2. webpa Guest

    wrote:
    > I'm designing a product that involves freezing of every day car keys.
    > The keys that will be frozen are obviously likely to include
    > electronics.
    >
    > Are there any components inside modern day electronic keys that are
    > likely to be damaged by freezing?


    "Freezing" meaning what temperature? -.01 C, or -40 C? Makes a huge
    difference. Consumer electronics (especially for the automotive
    industry) are probably good to -10 or
    -20 C. Lower than that is the realm of milSpec parts...you know...the
    "gold-plated" stuff that is expected to work -100 to +95.
    webpa, Apr 3, 2006
    #2
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  3. Al Guest

    In article <>,
    wrote:

    > I'm designing a product that involves freezing of every day car keys.
    > The keys that will be frozen are obviously likely to include
    > electronics.
    >
    > Are there any components inside modern day electronic keys that are
    > likely to be damaged by freezing?
    >


    Most commerical electronic components are spec'd at -65C to 150C,
    non-operating. But your assembly may not survive due to differential
    expansion resulting in fracturing of all kinds of things.

    Al
    Al, Apr 3, 2006
    #3
  4. CWatters Guest

    <> wrote in message
    news:...
    > I'm designing a product that involves freezing of every day car keys.
    > The keys that will be frozen are obviously likely to include
    > electronics.
    >
    > Are there any components inside modern day electronic keys that are
    > likely to be damaged by freezing?


    I think lithium cells used in wireless remote key fobs are good down to
    around -40C.
    CWatters, Apr 3, 2006
    #4
  5. JANA Guest

    I work and very often live in a very cold region of Canada. I have been up
    to places like Frobisher Bay, Bay Comeau, Ramouski, and others even more
    north. We have had some winters where the temperatures were down to below
    the minus fifties (<-50 deg Cels). I have left my car or the truck outside
    all night for more than 15 hours, and they started in the morning. All the
    ignition system, gauges, and etc., are computerized in these cars. Even the
    radio would play CD's after starting in this cold. The only thing I can see,
    is that it is best to use synthetic motor oil, because regular motor oil may
    become too thick. The proper rated antifreeze and wiper fluid is essential.
    As far as the electronics is concerned, I have never had anything fail from
    the cold. There are many vehicles used in the far north of Canada for
    exploration and industry. They are operating under severe cold conditions
    during the winter time.

    I would be curious to know why anyone would want to freeze car keys? !!!



    --

    JANA
    _____


    "webpa" <> wrote in message
    news:...

    wrote:
    > I'm designing a product that involves freezing of every day car keys.
    > The keys that will be frozen are obviously likely to include
    > electronics.
    >
    > Are there any components inside modern day electronic keys that are
    > likely to be damaged by freezing?


    "Freezing" meaning what temperature? -.01 C, or -40 C? Makes a huge
    difference. Consumer electronics (especially for the automotive
    industry) are probably good to -10 or
    -20 C. Lower than that is the realm of milSpec parts...you know...the
    "gold-plated" stuff that is expected to work -100 to +95.
    JANA, Apr 4, 2006
    #5
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