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TMP117: Stress on TMP117

Part Number: TMP117

Hello E2E Experts,

Good day.

Please confirm if TMP117 could handle the ca. 29000g static load on the rotating pipe (will be fully encapsulated with e-compatible-epoxy/-silicone).

The g-load would be ca. 29000 g. I am wondering if there is any sensor that can sustain such a load and still works fine.

Regards,

CSC

  • Dear CSC  -

    I think the answer is probably no, but please ask the customer to clarify if this is actually a static or cyclic load, as the brief description describes more what i think may be a cyclic load. Additionally, please ask them if this is a weight or a g-force, as the term g-load is typically used to describe direct force produced by the acceleration of a mass. 

    It would also be helpful to know more about what the complete use case is here, to help us understand more and then be able to comment further. 

    Also, is there something stopping the customer from posting to E2E directly? 

       

  • Hello Josh,

    Good day

    I am afraid the customer's email domain is not allowed-reason why I am posting on his behalf.

    Nevertheless thank you for the solutions and I will get back once I received feedback.

    Regards,

    CSC

  • OK - thanks!

  • Hello Josh,

    Good day.

    The g-number is the g-acceleration without any weight yet factored in, I guess if multiplied by the weight of the tmp117 we get the g-load? The beneficial thing on this test bench is that the rotating pipes for which we evaluate to embed temperature sensors have no cyclic rpm change but have a static rpm of finally/max 40000rpm (hence the great g-accel). The sensors would be embedded in a channel and fully encapsulated e.g. with "CHT SilSo SE2014" (high-pressure certified dielectric filler for e.g. e-comp.) Does that help to determine if this research effort is feasible or not?

    Let me know.

    Regards,

    CSC

  • Dear CSC - 

    We generally do not recommend the use of underfill or overfill on our high precision parts (the TMP117 is 0.1°C accurate device) as those put very undesirable strain on the devices, to start with, and at levels which are orders of magnitude less than what I read into the description above. As I think they are far outside anything we test for, so they will have to plan and conduct experiments of their own.