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TMP117: Encapsulation of TMP117

Andreas Larsen
Prodigy 30 points
Part Number: TMP117

Hello all.

I need help regarding the TMP117 digital thermal sensor. 

I work in a company where we want to use it for our test equipment for temperature test of our products.

The prope is going to be on a PCB and therefore im looking for a way to encapsulate the PCB and probe. 

Is there any recommendation on how and what to use for best results?

  • 0
    TI__Mastermind 28075 points

    Hi Andreas,

    For best results, please ensure that the PCB is as small as possible.

    In terms of the whole probe, the PCB and the probe material (stainless steel, copper, plastic etc.) are going to be the dominant sources of thermal mass when compared to the TMP117 sensor. Shrinking these will provide you with a faster response time from your design.

    If you are going to use thermal epoxy inside the probe, please ensure that it is a soft material, and will not harden excessively after curing or at the low end of your temperature range. The TMP117's accuracy can be negatively affected by physical stress from rigid epoxies/molds. 

    Best Regards,
    Brandon Fisher