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LMT70 and TIDA-00824

Harry Rieth
Prodigy 50 points
Other Parts Discussed in Thread: LMT70, TIDA-00824

Hi, LMT70 is work well and I will be mounting it in a small stainless steel well similar to what is shown in TIDA-00824 figure 10.  Do you have any suggestions for the thermal epoxy used.   I assuming this is non-conducting epoxy and there is no film between the bottom of LMT70 board and epoxy or the metal can. Any suggestions appreciated.  Harry

  • 0
    TI__Expert 7220 points
    Hi Harry,

    Yes, you are correct the epoxy should be thermally conductive and electrically isolating. We used a Contronics branded thermal epoxy for this design, unfortunately the specific epoxy we use is no longer on their website but they have many similar products. What is your application?

    -Michael Wong
  • 0 in reply to Michael Wong
    Prodigy 50 points

    Michael,

    Thank you.  the LMT70 board (0.1" x 0.1") is mounted in  a small stainless steel well.  The outside surface will be making contact with skin for skin surface temperature measurements.  I wasn't planning on back filling the well, just mounting the LMT70 board to the surface using the thermal epoxy.  Do you think backfill with non-conductive epoxy is advisable? 

    Harry

  • 0 in reply to Harry Rieth
    TI__Expert 7220 points
    Hi Harry,

    I'm not familiar with the word backfill, can you describe it more? If it is about filling the entire well with thermal epoxy then I do not recommend it because of added thermal mass. You just need a small amount of thermal epoxy to attach the LMT70 to your stainless steel well.

    -Michael Wong
  • 0 in reply to Michael Wong
    Prodigy 50 points
    Michael,
    Filling the entire well with non-thermal epoxy is what I meant. So thermal epoxy to mount LMT70 and then back fill with non-thermal epoxy. Per your suggestion I WILL NOT backfill. Thanks for your help.
    Regards,
    Harry