media compatibility of MPL3115A2

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media compatibility of MPL3115A2

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ingodebus
Contributor I

Is the MPL3115A2 protected with gel as described in AN3728?

In the past, we had good results with the now discontinued MPX2202A, even in (mildly) aggressive gaseous media. Is the MPL3115A2 comparable wrt withstanding such media as for instance air with some amount of sulfur dioxide or similar gases? Thanks!

Ingo Debus

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reyes
NXP TechSupport
NXP TechSupport

Hi Ingo Debus,

Yes, the MPL311A2 is protected with Fluorosilicone Gel (Type FE-53) just like the MPXM2202A, so it may work with a non-aggressive media different than air, however, there is a possibility that other media than dry clean air has the potential to dissolve, or be absorbed by the gel and corrupt the die surface or lead to wire-bond breakage. Some types of media will take longer to corrupt the die than others.

I would like refer you to the application note AN3728: “Media Compatibility for IPS PRT Pressure Sensors” that would be worth to be considered in addition to the provided information.
AN3728: Media Compatibility for IPS PRT Pressure Sensors
http://www.nxp.com/files/sensors/doc/app_note/AN3728.pdf

In this application note at page# 3, you can see that we have tested a couple of media, mainly on parts having media resistant gel, but we cannot give a guarantee about the long term reliability of these devices under these conditions.

We normally recommend that if a customer wants to use the pressure sensor with a different media than “Dry Clean Air”, they must validate the product performance in their application and assume all risk and liability. A determination must be made if this impact is acceptable for the application.


Have a great day,
Jose

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reyes
NXP TechSupport
NXP TechSupport

Hi Ingo Debus,

Yes, the MPL311A2 is protected with Fluorosilicone Gel (Type FE-53) just like the MPXM2202A, so it may work with a non-aggressive media different than air, however, there is a possibility that other media than dry clean air has the potential to dissolve, or be absorbed by the gel and corrupt the die surface or lead to wire-bond breakage. Some types of media will take longer to corrupt the die than others.

I would like refer you to the application note AN3728: “Media Compatibility for IPS PRT Pressure Sensors” that would be worth to be considered in addition to the provided information.
AN3728: Media Compatibility for IPS PRT Pressure Sensors
http://www.nxp.com/files/sensors/doc/app_note/AN3728.pdf

In this application note at page# 3, you can see that we have tested a couple of media, mainly on parts having media resistant gel, but we cannot give a guarantee about the long term reliability of these devices under these conditions.

We normally recommend that if a customer wants to use the pressure sensor with a different media than “Dry Clean Air”, they must validate the product performance in their application and assume all risk and liability. A determination must be made if this impact is acceptable for the application.


Have a great day,
Jose

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------