Is silicon sealant conductive?

Discussion in 'General Electronics Chat' started by camjerlams, May 27, 2015.

  1. camjerlams

    Thread Starter Member

    Dec 23, 2012
    56
    1
    Hi, Ive replaced a ribbon cable to a heating element with a thermistor. The cable was damaged but everything worked before I soldered in the new cable. The cable does a lot of moving so I thought it would be a good idea to put all purpose silicon where the cable goes into the board so it doesnt bend at the board where it might break off. I now get an error code for temp sensor short circuit though and a temp reading of 120degC when it should be about 25. Could there be current leak because of the silicon?
     
  2. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    Most likely not.
     
  3. MikeML

    AAC Fanatic!

    Oct 2, 2009
    5,450
    1,066
    If it were Silicon, it would cause a leak.;)

    If it is Silicone, then likely not, although as Silicone cures, it puts out Acetic Acid (smells like Vinegar), which is corrosive. Silicone Bath Caulk should not be used to pot electronics. There are some neutral-cure Silicones specifically designed for potting electronics.
     
    Last edited: May 27, 2015
  4. AnalogKid

    Distinguished Member

    Aug 1, 2013
    4,535
    1,251
    What is the 25C resistance of the sensor?

    ak
     
  5. camjerlams

    Thread Starter Member

    Dec 23, 2012
    56
    1
    I have a spare one that should be working that reads 11.2k ohm and the one im working with is 9.75k ohm..
     
  6. camjerlams

    Thread Starter Member

    Dec 23, 2012
    56
    1
    wait I've just sat them beside each other for a while and the resistances are now 10.12k (problem one) and 10.88k (spare)
     
  7. camjerlams

    Thread Starter Member

    Dec 23, 2012
    56
    1
    I soldered the ribbon cabled in upside down at one end.. hahaha
    it should do a flip between boards. OK thanks everyone.. I'll leave now.
     
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