Comment by WarmWash

Yes, but we are splitting hairs at that point. The transient spike is a high impedance voltage that is tripping the high impedance internal protection circuitry of the magnetometer. So whether we have 20mOhms of capacitive decoupling or 500mOhms of inductive decoupling, both are better than the infinite impedance of nothing there.

We're not building a precision filter, were cutting the paws off of a paper tiger. No need to let perfect be the enemy of good.