a salty water for capsense

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befic_2639911
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Hi,

     According to AN64846 ,a salty water by dissolving 40 gm of cooking salt (NaCl) in 1 liter of water , is a proper simulation of worst-case condition.

     What is parasitic capacitance value of this kind salty water?   

     why not the saturated salty water to be the worst-case?

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LinglingG_46
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500 solutions authored 1000 replies posted 10 questions asked

As my understanding:

Dissolving 40 gm of cooking salt (NaCl) in 1 liter of water can simulate the seawater.

It's reasonable to use sea water as a boundary to simulate the worst situations in life.

If saturated salt water is used, the material may be damaged. Many polymer-based materials have poor salt tolerance.

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LinglingG_46
Moderator
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500 solutions authored 1000 replies posted 10 questions asked

As my understanding:

Dissolving 40 gm of cooking salt (NaCl) in 1 liter of water can simulate the seawater.

It's reasonable to use sea water as a boundary to simulate the worst situations in life.

If saturated salt water is used, the material may be damaged. Many polymer-based materials have poor salt tolerance.

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Thank you ,LinglingG.

     It sounds reasonable.

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